Answer:
K+ and Br-
Explanation:
Consider again the reaction for photosynthesis: 6CO2 + 6H2O → C6H12O6 + 602
Select the correct mole ratio to complete the calculation shown below.
1 mol O2 ? 180. 18 g C6H1206
1.00 g 0, x 20 00 2x5x-
02 32.00 g 0,*;* 1 mol CH,,O =xg C6H1206
1 mol C6H1206
6 mol O2
6 mol O2
1 mol C6H12O6
6 mol C6H1206
1 moln
1) Intro
Answer:
6 CO2 + 6H2O produces 1 C6H12O6 + 6O2
Explanation:
Why do you think it is
important for cattle ranchers to understand the basics of chemistry?
Answer:
Because chemistry is the science that studies the properties of the substances and the reactions they undergo, which is the basis of metabolism (chemical reactions inside the body) and the health science.Explanation:
it is important for cattle ranchers to understand the basics of chemistry because feeding and health of their valuable animals rely in the principles of chemical science.
Understanding what elements or compounds animal food must contain for the animals grow better is an esential part of animal husbandry.
The same can be said about the vitamins, drugs, antibiotics, and medicines in general, needed by the livestock to be healthy and cure diseases.
Chemistry involves the study of the substances, their propeties, and how to combine them (chemical reactions) which is the basis of the nutritrion and medicine; two essential parts of cattle breeding.
phosphorus trifluoride is formed from its elements P4 (s) F2 (g) ---> PF3 (g) how many grams of fluorine are needed to react with 6.20 g
This is an incomplete question, here is a complete question.
Phosphorus trifluoride is formed from its elements.
[tex]P_4(s)+6F_2(g)\rightarrow 4PF_3(g)[/tex]
How many grams of fluorine are needed to react with 6.20 g of phosphorus?
Answer : The mass of [tex]F_2[/tex] needed are, 11.4 grams.
Explanation : Given,
Mass of [tex]P_4[/tex] = 6.20 g
Molar mass of [tex]P_4[/tex] = 124 g/mol
Molar mass of [tex]F_2[/tex] = 38 g/mol
First we have to calculate the moles of [tex]P_4[/tex]
[tex]\text{Moles of }P_4=\frac{\text{Given mass }P_4}{\text{Molar mass }P_4}[/tex]
[tex]\text{Moles of }P_4=\frac{6.20g}{124g/mol}=0.05mol[/tex]
Now we have to calculate the moles of [tex]F_2[/tex]
The balanced chemical equation is:
[tex]P_4(s)+6F_2(g)\rightarrow 4PF_3(g)[/tex]
From the balanced reaction we conclude that
As, 1 mole of [tex]P_4[/tex] react with 6 moles of [tex]F_2[/tex]
So, 0.05 moles of [tex]P_4[/tex] react with [tex]0.05\times 6=0.30[/tex] moles of [tex]F_2[/tex]
Now we have to calculate the mass of [tex]F_2[/tex]
[tex]\text{ Mass of }F_2=\text{ Moles of }F_2\times \text{ Molar mass of }F_2[/tex]
[tex]\text{ Mass of }F_2=(0.30moles)\times (38g/mole)=11.4g[/tex]
Therefore, the mass of [tex]F_2[/tex] needed are, 11.4 grams.
The mass of F2 that should be required to react with 6.20 g should be 11.4 grams.
Calculation of the mass:Since
Mass of P4 is 6.20g
The molar mass of P4 is 124 g/mol.
And, the molar mass of F2 is 38 g/mol.
Now the moles of P4 is
= Given mass / molar mass
= 6.20/124
= 0.05 mol
Now the moels of F2 is
= Moles of P4 * 6
= 0.05 * 6
= 0.30 moles
So, here the mass is
= Moles of F2 * molar mass of F2
= 0.30 * 38
= 11.4 grams
Learn more about mass here: https://brainly.com/question/11587661?referrer=searchResults
how much hydrogen gas is necessary to exert a pressure of 1.4 ATM at 430k if occupying a volume of 15.1 l
Answer:
0.60 mol H₂
General Formula and Concepts:
Chemistry - Gas Laws
Ideal Gas Law: PV = nRT
P is pressureV is volume in Litersn is number of molesR is the gas constant [tex]0.0821 \frac{L \cdot atm}{mol \cdot K}[/tex]T is temperature in KelvinsExplanation:
Step 1: Define Variables
P = 1.4 atm
T = 430 K
R = 0.0821 (L · atm)/(mol · K)
V = 15.1 L
n = unknown
Step 2: Solve for n
Substitute: [tex](1.4 \ atm)(15.1 \ L)=n(0.0821 \ \frac{L \cdot atm}{mol \cdot K})(430 \ K)[/tex]Isolate n: [tex]\frac{(1.4 \ atm)(15.1 \ L)}{(0.0821 \ \frac{L \cdot atm}{mol \cdot K})(430 \ K) }=n[/tex]Multiply: [tex]\frac{21.14 \ L \cdot atm}{35.303\ \frac{L \cdot atm}{mol} }=n[/tex]Divide: [tex]0.598816 \ mol =n_{H_2}[/tex]Rewrite: [tex]n_{H_2} = 0.598816 \ mol[/tex]Step 3: Check
We are given 2 sig figs as our lowest. Follow sig fig rules and round.
0.598816 mol H₂ ≈ 0.60 mol H₂
Final answer:
Approximately 0.268 moles of hydrogen gas are necessary to exert a pressure of 1.4 ATM at 430 K and occupy a volume of 15.1 L.
Explanation:
To calculate the amount of hydrogen gas necessary to exert a pressure of 1.4 ATM at 430 K and occupy a volume of 15.1 L, we can use the ideal gas law equation:
PV = nRT
Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.
Rearranging the equation to solve for the number of moles:
n = PV / RT
Substituting the given values:
n = (1.4 ATM) * (15.1 L) / (0.0821 L*ATM/(mol*K)) * (430 K)
Simplifying the equation yields:
n = 0.26796 mol
Therefore, approximately 0.268 moles of hydrogen gas are necessary to exert a pressure of 1.4 ATM at 430 K and occupy a volume of 15.1 L.
we know now that fire and air are not elements because _______
a) Air cannot be seen
b) Air could put out a fire
c) Fire is not only hot but dry too
d) Fire requires oxygen and air has oxygen in it
The specific heat of water is 4.18 J (g°C) and that of wood is 1.97 J/(g°C). Whích statement is correct?
Answer: Given equal masses, water will heat up less than wood if the same heat is added.
Answer:
The correct answer is c
What are 3 ways to prevent getting athletes foot
Answer:keep feet dry, avoid sharing things, wear cotton socks. That’s all
Cow’s milk is 4.5% by mass of lactose. Calculate the mass of lactose present in 175 g of
milk
Answer:
7.875 grams
Explanation:
You multiply 175 g by .045
This gives you 7.875 grams of lactose
Final answer:
The mass of lactose present in 175 g of cow's milk, which contains 4.5% lactose by mass, is 7.875 grams.
Explanation:
Mass is a fundamental physical quantity that represents the amount of matter in an object. It is a scalar quantity, meaning it has magnitude but no direction. Mass is typically measured in units such as kilograms (kg) or grams (g). In classical mechanics, mass plays a crucial role in determining an object's inertia, which is its resistance to changes in motion.
To calculate the mass of lactose present in 175 g of cow's milk, which contains 4.5% lactose by mass, you can use the following formula:
Mass of lactose = (Percentage of lactose by mass) × (Total mass of the milk)
Mass of lactose = 0.045 × 175 g = 7.875 g
Therefore, the mass of lactose present in 175 g of milk is 7.875 grams.
What volume of nitrogen gas (N2) is equal to 3.42x1022 molecules of this substance?
Answer : The volume of nitrogen gas equal to [tex]3.42\times 10^{22}[/tex] molecules of this substance is, 1.27 liters.
Explanation :
First we have to calculate the moles of nitrogen gas.
As, [tex]6.022\times 10^{23}[/tex] molecules present in 1 mole of nitrogen gas
So, [tex]3.42\times 10^{22}[/tex] molecules present in [tex]\frac{3.42\times 10^{22}}{6.022\times 10^{23}}=0.0568[/tex]mole of nitrogen gas
Now we have to calculate the volume of nitrogen gas.
As we know that, 1 mole of substance occupies 22.4 L volume of gas at STP.
As, 1 mole of nitrogen gas occupies 22.4 L volume of nitrogen gas
So, 0.0568 mole of nitrogen gas occupies [tex]0.0568\times 22.4=1.27L[/tex] volume of nitrogen gas
Therefore, the volume of nitrogen gas equal to [tex]3.42\times 10^{22}[/tex] molecules of this substance is, 1.27 liters.
Answer:
1.27
Explanation:
True of false: The land absorbs more energy from the sun than the water does.
Answer: True
Explanation:
Land surfaces absorb much more solar radiation than water. This is due to the fact that most land surfaces are darker than water which of course means more absorption of solar radiation and heat.
How many moles are needed to make 2.5 L of a 3.8 M solution?
9.5 mol
0.66 mol
1.5 mol
15 mol
Answer: 9.5
Explanation:
The moles needed to make 2.5 L of a 3.8 M solution is 9.5 moles.
What is the definition of Molarity ?It is defined as moles of solute in certain volume of Solvent.
The units of Molarity is mol/L or Molar(M)
Molarity = moles of solute / Volume of Solvent
It is given that a 2.5 L , 3.8 M solution
Let n be the number of moles needed
M = n/V
Substituting the values in the equation
3.8 = n /2.5
n = 3.8 * 2.5
n = 9.5 moles
Therefore the moles needed to make 2.5 L of a 3.8 M solution is 9.5 moles.
To know more about Molarity
https://brainly.com/question/2817451
#SPJ2
Which one is a balanced equation?
Answer:
Explanation:
but what is it.
a solid sample of oil is warmed until it turns into a liquid. which property of the oil will decrease?
I think the answer is it turnes into a gas. Hope it helps! :) Asnwer is density.
A solid sample of oil is warmed until it turns into a liquid. Density is the property of the oil will decrease.
What do you mean by density ?Density is the measurement of how tightly a material is packed together. It is defined as the mass per unit volume. Density Symbol: D or ρ Density Formula: ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.
As temperatures rose, the density of all oils decreased. The temperature coefficients of density change differed slightly between oils. The density differentials between oil and water, as well as their temperature coefficients, varied significantly between oils.
Oil is denser than alcohol but denser than water. Because the molecules that make up oil are larger than those that make up water, they cannot pack as tightly as water molecules can. They occupy more space per unit area and have a lower density.
Thus, Density is the property of the oil will decrease.
To learn more about the density, follow the link;
https://brainly.com/question/29775886
#SPJ6
Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?
A.strongly acidic
B.strongly basic
C. slightly basic
D.slightly acidic
Answer:
C. slightly basic
Explanation:
0-7 = acidic
7 = neutral
7-14 = basic
- Since the pH is just over 7, the answer would be slightly basic.
- Hope this helps! Please let me know if you need a further explanation.
The human blood having a pH between 7.35 and 7.45 simply means the blood is slightly basic.
The correct answer to the question is Option C. slightly basic.
The pH of a solution is simply a measure of the acidicity or alkalinity of the solution.
The pH scale ranging from 0 to 14 gives a discription of the acidicity or alkalinity of a solution as follow:
0 to 6 => acidic
7 => Neutral
8 to 14 => Basic
From the question given above,
The pH of the blood reads between 7.35 and 7.45.
This simply implies that the human blood is slightly basic as the pH reading of the blood is a little above the neutral mark (i.e 7) of the pH scale.
Therefore, Option C. slightly basic. gives the correct answer to the question.
Learn more: https://brainly.com/question/1433865
How many moles is 3.52 x 10^24 molecules of water?
A. 6.34 x 10^25 mol H2O
B. 2.12 x 10^4 mol H2O
C. 5.85 mol H2O
Answer:
[tex]\large \boxed{\text{5.40 mol}}[/tex]
Explanation:
[tex]\text{Moles of water} = 3.25 \times 10^{24}\text{ molecules} \times \dfrac{\text{1 mol }}{6.022 \times\ 10^{23} \text{molecules}} = \textbf{5.40 mol}[/tex]
What is the net ionic equation?
- HCN > H+ + CN-
CN- + Lit → Li+ CN-
H+ + OH- → H2O
Answer:
c
Explanation:
got it right on assignment
Final answer:
A net ionic equation reflects only the participating ions in a chemical reaction, omitting the spectators. For HCl reacting with NaOH, it is H+(aq) + OH−(aq) → H₂O(l). For AgNO₃ reacting with NaCl, it is Ag+(aq) + Cl−(aq) → AgCl(s).
Explanation:
What is a Net Ionic Equation?
The net ionic equation shows the chemical equation that includes only the reacting ions in a solution and omits the spectator ions. Spectator ions are those that do not participate directly in the chemical reaction and which remain in the solution unchanged. This simplification helps to focus on the actual chemical change taking place. For example, if we consider the reaction of hydrochloric acid (HCl) with sodium hydroxide (NaOH), we start with the complete ionic equation:
H+(aq) + Cl−(aq) +Na+(aq) + OH−(aq) → H₂O(l) + Na+(aq) + Cl−(aq)
In this reaction, sodium ions (Na+) and chloride ions (Cl−) are spectator ions, as they do not change during the reaction. We can remove them to obtain the net ionic equation, which demonstrates the actual chemical change:
H+(aq) + OH−(aq) → H₂O(l)
Similarly, if we were to use a different example such as the precipitation reaction between silver nitrate (AgNO₃) and sodium chloride (NaCl), the net ionic equation would be:
Ag+(aq) + Cl−(aq) → AgCl(s)
This representation highlights the formation of silver chloride precipitate from the reacting ions, omitting the spectator sodium (Na+) and nitrate (NO₃−) ions.
Magnesium hydroxide + hydrogen sulfate
Answer:
Below.
Explanation:
Magnesium hydroxide + Hydrogen Sulphate --> Magnesium Sulphate + Water
The balanced equation:
Mg(OH)2 + H2SO4 ---> MgSO4 + 2H2O
The number of moles in 4.5 x 1024 atoms of oxygen is
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 7.475 moles are present in 4.5 x 10²⁴ atoms of oxygen.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
Mathematically, the formula for the number of moles can be given as
number of mole =given number of atoms ÷ 6.022×10²³(Avogadro number)
number of atoms of oxygen=4.5 x 10²⁴atoms
Substituting all the given values in the above equation, we get
number of atoms of oxygen=(4.5 x 10²⁴)/(6.02 x 10²³)
number of atoms of oxygen= 7.475 mole
Therefore, 7.475 moles are present in 4.5 x 10²⁴ atoms of oxygen.
To know more about mole, here:
https://brainly.com/question/15209553
#SPJ5
Elements with an oxidation number of one include which of the following
The answer is C. Potassium and D. Lithium.
The correct answers to which elements have an oxidation number of 1 are C. Potassium and D. Lithium, as both are group 1 alkali metals that typically form ions with a +1 charge.
Both potassium and lithium belong to the group 1 elements of the periodic table, also known as the alkali metals. These metals typically have a +1 oxidation state when forming compounds. Potassium (K) for example, readily loses one electron to form a K+ ion, also known as a monovalent cation. Similarly, lithium (Li) will also lose one electron to form an oxidation state of +1.
Magnesium (Mg) and Calcium (Ca), on the other hand, form ions with a 2+ charge, indicating an oxidation state of +2. For instance, in [tex]MgCl_2[/tex], magnesium has an oxidation number of +2. Therefore, options A. Magnesium and B. Calcium do not have an oxidation number of 1 and are not correct answers to the question.
A self-contained living thing
A. Ecosystem
B. Organism
C. Competition
D. Population
E. Resources
What is emitted during gamma radiation?
Answer:
electromagnetic radiation
Explanation:
I had a quiz abt it
PLS HELP IF YOU WANT A BRAINLIEST Amelia makes a Venn diagram to compare the advantages and disadvantages of asexual reproduction and sexual reproduction.
Which label belongs in the region marked X?
A. Less competition for resources
B. Faster
C. No variation in DNA
D. Less energy required
Answer:
d. less energy required
Explanation:
it said it in my book and i took the edg quiz
Write the balanced COMPLETE ionic equation for the reaction when Na₂CO₃ and AgNO₃ are mixed in aqueous solution. If no reaction occurs, write only NR.
Final answer:
The balanced complete ionic equation for the reaction between Na₂CO₃ and AgNO₃ in aqueous solution is 2Na+ + 2NO₃- + CO₃²- + 2Ag+ → 2Na+ + 2NO₃- + Ag₂CO₃. The sodium and nitrate ions can be eliminated from the equation since they appear unchanged on both sides. The net ionic equation is CO₃²- + 2Ag+ → Ag₂CO₃.
Explanation:
Balanced Complete Ionic Equation:
2Na+(aq) + 2NO3-(aq) + CO32-(aq) + 2Ag+(aq) → 2Na+(aq) + 2NO3-(aq) + Ag2CO3(s)
In this reaction, the sodium ion (Na+) and the nitrate ion (NO3-) appear unchanged on both sides of the equation, so they can be eliminated from the reaction.
Net ionic equation:
CO32-(aq) + 2Ag+(aq) → Ag2CO3(s)
Assess the importance to organisms of
maintaining homeostasis.
Answer:
The protection of internal environment from the harms of fluctuations in external environment is termed as homeostasis.
Explanation:
Homeostasis is the central requirement in the maintenance of an organism, which compels the adaptations in the constant changing condition and contribute in evolutionary process.
Maintaining homeostasis is crucial for all organisms to regulate their internal environment, adapt to environmental changes, and ensure their survival. A loss of homeostasis can cause diseases and negatively impact an organism's health.
Explanation:Maintaining homeostasis is essential for the survival and well-being of all organisms. Homeostasis refers to the ability of an organism to regulate its internal environment, irrespective of changes in external conditions. This function is carried out by a myriad of biological processes and systems; for example, thermoregulation helps maintain a constant body temperature, and osmoregulation helps control the water and ion concentrations.
Exhibiting a lack of homeostasis can lead to great physiological stress and might be detrimental to the organism's survival. For example, in humans, a deviation from homeostasis can cause diseases such as diabetes, where the body fails to regulate blood glucose levels.
In conclusion, maintaining homeostasis is fundamentally important as it assures that all organisms can adapt to environmental changes, ensuring their survival and continued growth and development.
Learn more about homeostasis here:https://brainly.com/question/31789146
#SPJ11
Solve 8 = 2x + 4.
x = −4
x = −1
x = 0
x = 7
Answer:
value of x is -4 to solve 8=2×+4
Answer:
x=-4
Explanation:
just took test
* If you found a fossil like the one pictured above in an open grassy field, what could you infer about this particular part of Earth
during much earlier times?
Earth's earlier environment in this particular area was covered with water.
Earth's earlier environment in this particular area was most likely a deep
canyon
Earth's earlier environment in this particular area was frozen like the
ground coverings of a tundra.
Earth's earlier environment in this particular area was also similar to the
open, grassy field you see today.
Answer:
A
it on the explanation for ms yoder
What to do when bored and have no electronics?
Answer:
Explanation:
1. Get a pillow
2. Find a bed or a couch
3. Get a comfy blanket
4. SLEEP
What is a solute?
A) what you have the most of
B) usually water
C) the stuff doing the dissolving when making a solution
D) the stuff being dissolved when making a solution
Answer:
D
Explanation:
the stuff being dissolved when making a solution
it is dissolved in the solvent
is this reaction balanced.
Answer:
What reaction is balanced
How does solar reduces global warming.
Answer: By going solar, you can reduce demand for fossil fuels, limit greenhouse gas emissions, and shrink your carbon footprint
Explanation: