Answer:
0.2 M
Explanation:
Let's start by looking at a molecule of sodium sulfate.
Sodium sulfate is made up of sodium and sulfate ions. Sodium(Na) ion is given as Na(+1) where +1 is the valency of the Na atom or the charge on the Na ion. On the other hand sulfate( S[tex]O_{4}[/tex]) ion is represented as S[tex]O_{4}[/tex](-2) where -2 is charge on the sulfate ion. We know that a molecule is electrically neutral. Here the sodium and sulfate ions have charges of +1 and -2 respectively. Hence, for the sodium sulfate which is a compound containing soidum and sulfate ions, there should be 2 ions of sodium and an ion of sulfate, so that it is electrically neutral. Therefore the molecular formula of sodium sulfate is given as : [tex]Na_{2}[/tex][tex]SO_{4}[/tex].
Now we know that one molecule of sodium sulfate has 2 atoms of sodium ions in it. Also, one molar (1M) is 1 mole of the substamce in 1L of soltuion. And 0.1M means 0.1mole of substance (here it is sodium sulfate) in 1L of the solution. 1 molecule of sodium sulfate contains 2 atoms of sodium ions. Therefore, 1 mol of sodium sulfate contains 2 mols of sodium ions. Hence, 0.1mol of sodium sulfate contain 0.2 mols of sodium ions. Hence there are 0.2mols of sodium ions in the solution. Hence the concentration of sodium ion is 0.2M.
If you are given an ideal gas with pressure (P) = 259,392.00 Pa and temperature (T) = 2.00 oC of 1 mole Argon gas in a volume of 8.8 dm3 , calculate R to the correct number of significant figures and units under given condition
Answer:
R = 0.064 dm³ atm K⁻¹ mol⁻¹
Explanation:
Data Given:
volume of gas V = 8.8 dm³
no. of mole of gas (n) = 1 mole
Pressure P = 259,392.00 Pa
Convert Pascal (Pa) to atm (atmospheric pressure)
As,
101,325 Pa = 1 atm
So,
259,392.00 Pa = 2 atm
Then Pressure (P) = 2 atm
Temperature T = 2.00 °C
change the temperature from °C to K
As to convert °C to K the below formula used
0°C + 273.15 = 273.15K
So, for 2 °C
2°C + 273.15 = 275.15 K
So,
Temperature T = 275.15 K
ideal gas constant = ?
formula used for Ideal gases
PV = nRT
as we have to find R of the gas:
we will rearrange the ideal gas equation as below:
R = PV / nT ........................................... (1)
Put value in equation (1)
R = 2atm x 8.8 dm³ / 1 mole x 275.15 K
R = 17.6 atm. dm³ / 275.15 mol. K
R = 0.064 dm³ atm K⁻¹ mol⁻¹
So the value of R is 0.064 dm³ atm K⁻¹ mol⁻¹
and the unit of R (ideal gas constant) is dm³ atm K⁻¹ mol⁻¹
A drag racing vehicle travels from 0 to 100 mph in 5 seconds north.what is the acceleration
100mph = 100m/h
= 100m/h * 1 h/3600sec
= 0.028m/sec
= 0.028m/sec /5sec
= 0.055m/sec^2
The equation below shows lithium reacting with nitrogen to produce lithium nitride. 6Li + N2 2Li3N If 12 mol of lithium were reacted with excess nitrogen gas, how many moles of lithium nitride would be produced? 4.0 mol 6.0 mol 12 mol 36 mol
Answer:
4 mol of lithium nitride would be produced
Explanation:
6Li + N2 → 2Li3N
This equation means that 6 mol of lithium are reacted with 1 mol of nitrogen to make, 2 mol of lithium nitride.
So this is the rule of three to find out, how many moles of lithium nitride are been made, from 12 mol of Li.
6 Li _____ 2 Li3N
12 Li ________ (12. 2) / 6 = 4 moles
Answer:
4 mol of lithium nitride would be produced
Explanation:
6Li + N2 → 2Li3N
This equation means that 6 mol of lithium are reacted with 1 mol of nitrogen to make, 2 mol of lithium nitride.
So this is the rule of three to find out, how many moles of lithium nitride are been made, from 12 mol of Li.
6 Li _____ 2 Li3N
12 Li ________ (12. 2) / 6 = 4 moles
2. Write the formula or name for the following
compounds:
a. P205
b. CCl2
c. boron trichloride
d. dinitrogen tetrahydride
Answer:
Diphosphorus pentoxide
Carbon dichloride
BCl3
N2H4
Explanation:
These are all covalent compounds. To name covalent compounds, you add prefixes to the beginning of their names depending on what the subscript is of each element. The prefixes are:
1: Mono
2: Di
3: Tri
4: Tetra
5: Penta
6: Hexa
7: Hepta
8: Octa
9: Nona
10: Deca
For example, since the first one is Phopsphorus with a 2 next to it, you add the prefix Di to it.
If the first element in the compound only has one, meaning no number next to it, you do not say mono. This is why we just say "Carbon" for the second one instead of "Monocarbon."
Finally, you always have to end the second element in the compound with "ide." So, "chlorine" becomes "chloride," "oxygen" becomes "oxide," and so on.
How do producers and consumers get energy from the sun?
Answer: In photosynthesis, producers combine carbon dioxide, water, and sunlight to produce oxygen and sugar (their food). Other organisms get energy by eating producers. ... It cannot directly use the Sun's energy to make food. As a consumer, it has to eat— or, consume— other organisms for energy.
Explanation: Thats how both producers and consumers get energy
Producers like plants and algae utilize photosynthesis to convert sunlight into energy, which is then consumed by animals in an ecosystem. All life forms are reliant on the sun's energy for survival.
Producers such as plants, algae, and some bacteria, capture sunlight to make food through photosynthesis, converting it into glucose. Consumers, like animals, obtain energy from producers directly or indirectly by feeding on them or other consumers. Energy flow in ecosystems ensures that all life forms ultimately depend on the sun's energy for survival.
What substances react and form during oxidation
Answer:
carbon dioxide and water
Explanation:
ncompletely oxidized (in this sense, oxidation means the removal of electrons or hydrogen atoms), the end product being (apart from carbon dioxide and water)
Oxidation is the process of losing electron or reaction with oxygen. If the reactant burn in oxygen then it gives water and carbon dioxide and this type of oxidation is called combustion.
What is oxidation?Oxidation is the process of combining with oxygen or to lose electron to form the higher oxidation state. For example metals lose electrons forming their higher oxidation states. Fe lose its 2 electrons forming Fe²⁺ ion is an example of oxidation.
When a compound burns in oxygen it oxidizes to carbon dioxide and water, and the reaction is called combustion. Fuel gases such as hydrocarbons easily undergoes combustion reaction.
Similarly, organic molecules such as alcohols, ketones, aldehydes etc. undergo oxidation forming corresponding acids. The reagents which oxidizes other reactants is called oxidizing agent.
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A typical deposit of cholesterol,C27H460,in an artery has a mass of 3.90mg.how many molecules of cholesterol are present in this deposit?
Answer:
6.074 X 10¹⁸ molecules.
Explanation:
Molecular mass(MM) of this compound C₂₇H₄₆O
= 27*(MM of C) + 46*(MM of H) + (MM of O)
= 27*(12.0107) + 46* (1.00784) + (15.999)
= 324.2889 + 46.36064 + 15.999
=386.64854 g
The mass of a mole of any compound is called it's molar mass. 1 molar mass has 6.022 X 10²³, or Avogadro's number, C₂₇H₄₆O molecules.
If 386.64854 g of C₂₇H₄₆O has 6.022 X 10²³ molecules of cholesterol, then
3.9mg or 0.0039g of C₂₇H₄₆O will have how many molecules?..
Using unitary method:
Number of molecules = [tex]\frac{0.0039 * 6.022 *10^{23} }{386.64854}[/tex]
= 6.074 X 10¹⁸ molecules.
2. When atoms are heated so that they emit light, what characteristic of their light
allows you to tell one atom from another?
Answer:
The color of the light.
Explanation:
When an atom is heated, its electrons are excited and they jump to higher energy levels. The electrons will return to their normal energy level, and by doing this, they will emit a photon of energy, which is in the form of light. The color of the light depends on the difference of energy of the two levels, and because of that is different for each element.
Each atom emits light at different wavelengths that form its unique atomic emission spectrum when heated. By studying this spectrum, one can distinguish between different atoms. For example, hydrogen and helium atoms yield different spectral patterns due to the unique energy transitions in their electrons.
Explanation:When atoms are heated, they emit light consisting of many different colors or wavelengths, which is collectively referred to as an atom's spectral lines or spectrum. Every atom has a unique spectrum, equivalent to a 'fingerprint' because its electron energies are unique. This concept is called the atomic emission spectrum. Thus, by studying the spectrum emitted by an atom, we can tell one atom from another.
For instance, when hydrogen atoms are heated, they emit a specific spectral line that looks predominantly red because of the transitions that hydrogen's single electron makes. On the other hand, a helium atom's spectrum would look different, containing more diverse and vibrant colors due to the different energy transitions in its two electrons. By comparing the observed spectrum to known emission spectra, we can identify the type of atom.
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suppose work input is 25 j and the output distance is 10 m factoring in the effect of friction which must be true about output force a) it equals 2.5n b) it is less than 2.5n c) it is greater than 2.5n
Answer:
Therefore F ∠ 2.5N
Explanation:
Definition of Work:
It is the amount of energy transferred.
Mathematical expression:
W = F × d
By taking the friction into count it will define as:
Input work = work against friction × output work
No we will put the values:
25 J = w + 10 m
j = kg m²/s²
25 kg m²/s² = w + 10 m
when friction is exist then w > 0
25 kg m²/s² - 10 m > 0
15 N > 0
Therefore F ∠ 2.5N
why did the french became allies with the american?
Answers:
To get revenge for recent French losses in North America
To gain territory in the west
To protect the iroquols from British attacks
Answer:
It’s to gain territory
Because they wanted more territory than what they already had.
Answer:
Answer: To get revenge for recent French losses in North America.
Explanation:
The Seven Years War was fought in Europe from 1756-63. That conflict as it extended to colonial territories in the New World was known as the French and Indian War. Losing that conflict in North America to the British didn’t sit well with France. And so when the colonial Americans broke out in revolution against the British monarchy, France devoted enormous financial aid (as well as officer support) to the Americans. The cost to France for supporting America’s revolution added up to 1 billion livers (about 4 billion in today’s dollars). This is part of what put France’s debt problem over the edge and led to the French Revolution.
Volume is the quantity of two-dimensional space occupied by a liquid, solid, or gas.
a. True
b. False
Answer:
B.False
Explanation:
Volume is used in 3D shapes, 2D is found by area.
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What is the formula of the hydrated calcium sulfate, i.e., what is the whole number mole ratio of calcium sulfate to water?
(Can you answer quickly. I have exam tomorrow :)
Chemical formula of calcium sulfate dihydrate: CaSO₄ · 2 H₂O
There is a 1 : 2 mole ratio between calcium sulfate and water.
Explanation:
The calcium sulfate may be find as an anhydrous salt or a dihydrate. In the case of the dihydrate the chemical formula is CaSO₄ · 2 H₂O.
In the calcium sulfate dihydrate there are 1 mole of CaSO₄ and 2 moles of H₂O, so the mole ratio between the salt and the water molecules is 1 : 2.
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Final answer:
The hydrated form of calcium sulfate, also known as gypsum, has a chemical formula of CaSO4·2H2O, indicating a 1:2 mole ratio of calcium sulfate to water.
Explanation:
The hydrated form of calcium sulfate is commonly known as gypsum, and its chemical formula is CaSO4·2H2O. This indicates that there is a whole number mole ratio of 1:2 between calcium sulfate and water. Hydrates are compounds that include water molecules absorbed into their structure, and this absorbed water plays an essential role in the physical properties of the material. In the case of gypsum, the two water molecules are crucial for its use in construction and medical applications, such as in plaster of Paris.
Given 6 moles of CuCl2, how many moles of AlCl, were made? SHOW the math below
Answer:
6 moles of CuCl₂ will produced 4 moles of AlCl₃ .
Explanation:
Given data:
Moles of CuCl₂ = 6 mole
Moles of AlCl₃ produced = ?
Solution:
3CuCl₂ + 2Al → 2AlCl₃ + 3Cu
Now we will compare the moles of CuCl₂ with AlCl₃ .
CuCl₂ : AlCl₃
3 : 2
6 : 2/3 ×6 = 4 mol
So, 6 moles of CuCl₂ will produced 4 moles of AlCl₃ .
If you are given an ideal gas with pressure (P) = 259,392.00 Pa and temperature (T) = 2.00 oC of 1 mole Argon gas in a volume of 8.8 dm3 , calculate R to the correct number of significant figures and units under given condition
Answer:
R = 0.083 atm .L / mol.K
Explanation:
Given data:
Pressure of gas = 259,392.00 Pa
Temperature = 2.0 °C
Moles = 1 mol
Volume = 8.8 dm³
R = ?
Solution:
First of all we will convert the units.
Pa to atm
259,392.00 /101325 = 2.56 atm
dm³ to L
8.8 dm³ = 8.8 L
2.0 °C to K
2+273 = 275 K
Now we will calculate the R:
PV = nRT
R = PV/ nT
R = 2.56 atm . 8.8 L / 1 mol. 275 K
R = 22.528 atm .L / 1 mol. 275 K
R = 0.083 atm .L / mol.K
3. How many more troops did the Union states have than the Confederate states?
What is the mass percent of carbon in tryptophan
Explanation:
The formula for tryptophan is [tex]C_{11}H_{12}N_{2}O_{2}[/tex]
Mass of [tex]C[/tex] in tryptophan is [tex]11\times 12=132g[/tex]
Mass of [tex]H[/tex] in tryptophan is [tex]12\times 1=12g[/tex]
Mass of [tex]N[/tex] in tryptophan is [tex]2\times 14=28g[/tex]
Mass of [tex]O[/tex] in tryptophan is [tex]2\times 16=32g[/tex]
So,[tex]\text{total mass}=132+12+28+32=204g[/tex]
[tex]\text{mass of carbon}=132g[/tex]
[tex]\text{mass percent of carbon}=\frac{\text{mass of carbon}}{\text{total mass}}\times 100 =\frac{132}{204}\times 100 =64.7[/tex]%
Final answer:
The mass percent of carbon in tryptophan is approximately 64.68%, calculated by determining the total mass of carbon.
Explanation:
By using the atomic masses of carbon (C), hydrogen (H), nitrogen (N), and oxygen (O), we can calculate the molar mass of tryptophan. After that, we determine the total mass contributed by carbon atoms (by multiplying the number of carbon atoms by the atomic mass of carbon) and then divide this by the molar mass of tryptophan to get the mass percent of carbon.
So, the mass of carbon in tryptophan is 11 × 12.01 g/mol = 132.11 g/mol.
The molar mass of tryptophan is approximately 204.23 g/mol. The mass percent of carbon in tryptophan can thus be calculated as (132.11 g/mol) / (204.23 g/mol) × 100%, which yields approximately 64.68%.
This value indicates that carbon makes up about 64.68% of the mass of a tryptophan molecule. Understanding these kinds of compositions is important for fields like biochemistry and nutrition where the analysis of the biochemical roles of various compounds is crucial.
Which examples are indirect evidence used to study Earth's interior? Check all that apply.
composition of minerals in a rock
analysis of several seismographs
location of an earthquake's epicenter
identification of seismic wave direction
texture of different core rock samples
Answer:
c.) location of earthquakes epicenter
Explanation:
<3
Examples of indirect evidence used to study Earth's interior are analysis of several seismographs and identification of seismic wave direction, which allow scientists to gain insights into the Earth's structure through the behavior of seismic waves.
Explanation:Indirect evidence used to study Earth's interior includes seismic-related observations as they offer insights without direct sampling. The correct examples of indirect evidence for studying Earth's internal structure are:
Analysis of several seismographsIdentification of seismic wave directionThis evidence is gathered through monitoring how seismic waves travel through and interact with the Earth's layers. Seismic waves behave similarly to sound waves in a struck bell; they reflect, refract, and vary in velocity depending on the material they pass through, providing a model of the internal structure. Therefore, by setting up a network of seismographs around the globe, scientists can detect the pattern of waves, which helps them understand the different layers within Earth's interior.
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If the temperature of a gas is raised from 30°C to 60°C, what happens to the pressure?
The pressure increases by 10% of the original pressure
Thus the new pressure is 1.1 times the original pressure.
Explanation:We are given;
Initial temperature as 30°C, but K = °C + 273.15Thus, Initial temperature, T1 =303.15 KFinal temperature, T2 is 333.15 KWe are required to state what happens to the pressure;
We are going to base our arguments to Pressure law;According to pressure law, the pressure of a gas and its temperature are directly proportional at a constant volumeThat is; P α TTherefore, at varying pressure and temperature[tex]\frac{P1}{T1}=\frac{P2}{T2}[/tex]
Assuming the initial pressure, P1 is P
Rearranging the formula;
[tex]P2=\frac{P1T2}{T1}[/tex]
[tex]P2=\frac{(P)(333.15K)}{303.15K}[/tex]
[tex]P2 = 1.099P[/tex]
= 1.10 P
The new pressure becomes 1.10P
This means the pressure has increased by 10%
We can conclude that, the new pressure will be 1.1 times the original pressure.
What are the coefficients of the equation below when it is balanced?
___ CaCl2 + ___ Na3PO4 ___ Ca3(PO4)2 + ___ NaCl
3,2,1,6
3,2,1,3
1,1,1,1
1,2,2,1
3, 2, 1, 6
Explanation:
To balance the chemical equation the number of atoms of each element
entering the reaction have to be equal to the number of atoms of each
element leaving the reaction, in order to conserve the mass.
In our case we have:
3 CaCl₂ + 2 Na₃PO₄ → Ca₃(PO₄)₂ + 6 NaCl
So the stoechiometric coefficients will be:
3, 2, 1, 6
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Which of the following are spectator ions in the reaction shown?
Answer:
NO₃⁻(aq) and Na⁺ (aq) are spectator ions.
Explanation:
Chemical equation:
AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq)
Balanced Chemical equation:
AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq)
Ionic equation:
Ag⁺(aq) + NO₃⁻(aq) + Na⁺(aq) + Cl⁻(aq) → AgCl(s) + Na⁺(aq) + NO₃⁻(aq)
Net ionic equation:
Ag⁺(aq) + Cl⁻(aq) → AgCl(s)
The NO₃⁻(aq) and Na⁺ (aq) are spectator ions that's why these are not written in net ionic equation. The AgCl can not be splitted into ions because it is present in solid form.
Spectator ions:
These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.
Assign oxidation numbers to the following
Li3PO4
SO3 2-
Cr2s3
NO3-
You may find bellow the assignment of the oxidation number for each atom.
Explanation:
Li₃PO₄
Li have the oxidation number +1
P have the oxidation number +5
O have the oxidation number -2
SO₃²⁻
S have the oxidation number +4
O have the oxidation number -2
Cr₂S₃
Cr have the oxidation number +3
S have the oxidation number -2
NO₃⁻
N have the oxidation number +5
O have the oxidation number -2
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What's WO2 in empirical form?
Answer:
WO2:
Explanation:
If any element symbol in a formula has no subscript, implying a subscript of one, the formula is already empirical.
Getting these when you’re young helps your immune system fight off diseases:
A. Bandages
B. Stickers
C. Shots (immunizations)
D. Cough drops
C
Immunization shots are given to ensure immunity against future attacks on the body against the disease in which the vaccine is made.
Explanation:
The vaccine prepares the body by giving immune cells memory against the disease agent. The vaccine achieves this by introducing an attenuated form of the agent of the disease into the body. This means the introduced disease agents cannot cause disease but are enough to evoke an immune response from the body. The immune system, after eradicating the attenuated disease agent from the body, acquires memory such that it fights a real-world disease agent in case of infection.
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Concrete a mixture or pure substance?
Answer: Cement is a mixture.
Explanation: It is composed of different types of compound particles. Each of the components of concrete by themselves would be pure substances. For example, a sample of just calcium oxide would be a pure substance because the particles in the sample would all be identical calcium oxide compounds.
Concrete is a heterogeneous mixture comprised of cement, water, sand, and gravel, retaining the individual properties of its components and can be separated physically.
Explanation:Concrete is a mixture, not a pure substance. Pure substances are materials made up of only one type of matter, either a single element or a single compound, with a constant composition and set of properties throughout. In contrast, mixtures are combinations of two or more pure substances that retain their individual identities and can be separated by physical methods. Concrete is specifically a heterogeneous mixture as it consists of several different components such as cement, water, sand, and gravel that are not uniform throughout. These components can be identified and, in theory, could be separated by physical means.
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A certain radioactive isotope takes 8.40 s for 85.0% of the isotope to decay. What is the half-life of the isotope?
1.0 s
3.07 s
4.02 s
1.25 s
12.5 s
Answer:
3.07 seconds is the half-life of the isotope.
Explanation:
Initial mass of an isotope = x
Time taken by the sample, t = 8.40 s
Mass of an isotope decayed= 85.0%
Final mass of an isotope left=(100%-85%)of x= 15.0% of x = 0.15x
Half life of an isotope =[tex]t_{\frac{1}{2}} = ?[/tex]
Formula used :
[tex]N=N_o\times e^{-\lambda t}\\\\\lambda =\frac{0.693}{t_{\frac{1}{2}}}[/tex]
where,
[tex]N_o[/tex] = initial mass of isotope
N = mass of the parent isotope left after the time, (t)
[tex]t_{\frac{1}{2}}[/tex] = half life of the isotope
[tex]\lambda[/tex] = rate constant
[tex]0.15x=x\times e^{-(\frac{0.693}{t_{1/2}})\times 8.40 s}\\\\N=N_o\times e^{-0.693}[/tex]
Now put all the given values in this formula, we get
[tex]t_{1/2]=3.07 s[/tex]
3.07 seconds is the half-life of the isotope.
29.5 g of mercury is heated from 32°C to 161°C, and absorbs 499.2 joules of heat in the process. Calculate the specific heat capacity of mercury (in Jg°C).
Answer:
c = 0.13 j/ g.°C
Explanation:
Given data:
Mass of mercury = 29.5 g
Initial temperature = 32°C
Final temperature = 161°C
Heat absorbed = 499.2 j
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
Q = m.c. ΔT
ΔT = T2 - T1
ΔT = 161°C - 32°C
ΔT = 129 °C
Q = m.c. ΔT
c = Q / m. ΔT
c = 499.2 j / 29.5 g. 129 °C
c = 499.2 j / 3805.5 g. °C
c = 0.13 j/ g.°C
a rectangular solid of unknown density is 5 meters long, 2 meters high, and 4 meters wide. The mass of this solid is 300 grams. Given this information for this homogeneous material, calculate the density.
Answer:if you could be more spesific id be happpy to help
Explanation:
thanks sm.
Answer:
The density of the material is 7.5 g/m^3
Explanation:
The volume of a rectangle is:
Volume = Length*Height*Width
Replacing with data:
Volume = 5 m * 2 m * 4 m = 40 m^3
Density is computed as follows:
Density = Mass/Volume
Replacing with data:
Density = 300 g/40 m^3
Density = 7.5 g/m^3
25. What type and how many atoms are in Fe2(SO4)3?
It total there are 18 atoms.
Iron (Fe) is a metal.
Sulfur (S) is a nonmetal.
Oxygen (O) is a nonmetal.
Explanation:
We have the chemical formula of iron (III) sulfate Fe₃(SO₄)₃.
It total there are 18 atoms, 3 iron (Fe) atoms, 3 sulfur (S) atoms and 12 oxygen (O) atoms.
Iron (Fe) is a metal.
Sulfur (S) is a nonmetal.
Oxygen (O) is a nonmetal.
Iron is found as Fe²⁺ cation while the sulfate group SO₄⁻ as an anion.
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There are a total of 17 atoms in Fe2(SO4)3.
A compound is formed when atoms of elements combine chemically together. A compound is defined as a group of elements which are chemically combined together.
In the compound Fe2(SO4)3, there are;
Two iron atomsthree sulfur atomstwelve oxygen atomsThis makes a total of 17 atoms in the compound Fe2(SO4)3. Iron is a metal while oxygen and sulfur are nonmetals.
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What is the percentage error if the experimental
value is equal to the accepted value?
Final answer:
If the experimental value equals the accepted value, the percentage error is 0%, indicating perfect accuracy in the measurement.
Explanation:
When the experimental value of a measurement precisely matches the accepted value, the percentage error is 0%. This indicates that there is no discrepancy between the measured value and the standard or true value. Percentage error is a way to express the accuracy of an experimental measurement and is calculated using the formula: |experimental value - accepted value| × 100% / accepted value.
Therefore, if both values are equal, the formula results in 0%. As the accuracy of a measurement decreases, signified by a larger discrepancy between the experimental and accepted values, the percentage error correspondingly rises. Reporting the percentage error is critical for underscoring the reliability and precision of an experiment's results.
Identify which subatomic particle match each descriptions
Answer:
The complete question is given below:
Explanation:
Identify which subatomic particle match each description:
1) Particles that have a relative charge of +1.
Proton have the relative charge of +1 .
2) Particles that have a relative charge of -1.
Electron have relative charge of -1.
3) Particles that have no charge.
Neutron have no charge. It is neutral.
4) Particles that are located in the nucleus of an atom.
The protons and neutrons both are present in the nucleus.
5) Particles that have a much lower mass than the other types of particles.
Proton and neutrons are present in the nucleus. The most mass of an atom present in nucleus while electrons are present out side the nucleus and have negligible mass as compared to neutron and proton.
Explnation:
electron:
The electron is subatomic particle that revolve around outside the nucleus and has negligible mass. It has a negative charge.
Symbol= e-
Mass= 9.10938356×10-31 Kg
It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.
He constructed the glass tube and create vacuum in it. He applied electric current between electrodes. He noticed that a ray of particles coming from cathode to wards positively charged anode. This ray was cathode ray.
Properties of cathode ray:
The ray is travel in straight line.
The cathode ray is independent of composition of cathode.
When electric field is applied cathode ray is deflected towards the positively charged plate.
Hence it was consist of negatively charged particles.
Proton and neutron:
While neutron and proton are present inside the nucleus. Proton has positive charge while neutron is electrically neutral. Proton is discovered by Rutherford while neutron is discovered by James Chadwick in 1932.
Symbol of proton= P+
Symbol of neutron= n0
Mass of proton=1.672623×10-27 Kg
Mass of neutron=1.674929×10-27 Kg
An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.
All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.