Answer:
Their pH is less than 7
Explanation:
Both of these compounds pHs are greater than 7.
Answer:
A) Their pH is less than 7
Explanation:
Their pH is less than 7 is not correct. Their pH is greater than seven, but not equal to seven.
Which of these statements would be true if the water molecule was linear instead of bent? Check all that apply.
The molecule would be polar.
The molecule would contain polar covalent bonds.
Water would no longer produce hydrogen bonds.
The special properties of water would still be exhibited.
If the water molecule was linear instead of bent the water would no longer produce hydrogen bonds.
Explanation:
Yes, If the water molecule was linear instead of bent the water would no longer produce hydrogen bonds.The water would no longer generate hydrogen bonds. It will lose its polar features and nearly all of its features will change such as boiling point, water tension and solubility. It would be more like to gas, rather than liquid. If the water was in the linear, the water would have all the features and it would produce the hydrogen bonds.Answer:
2 and 3 are correct
Explanation:
a sample of O2 of volume 4.56 L was collected over water at 25c and a total pressure of 1.00 atm. The partial pressure of water is 34.5 Torr. How many moles of O2molescules were collected?
Answer:
0.178 moles of oxygen gas molecules were collected.
Explanation:
Pressure at which oxygen gas collected = p= 1.00 atm
Vapor pressure of the water [tex]p'=34.5 Torr=\frac{34.5}{760} atm=0.0454 atm[/tex]
Pressure of the oxygen gas = P
p = p' + P
[tex]1.00 atm =0.0454 atm+P[/tex]
P = 1.00 atm - 0.0454 atm = 0.9546 atm
Volume of the oxygen gas = V = 4.56 L
Moles of oxygen gas = n
Temperature at which gas collected = T = [tex]25^oC=273+25=298 K[/tex]
[tex]PV=nRT[/tex] (ideal gas)
[tex]n=\frac{PV}{RT}=\frac{0.9546 atm\times 4.56 L}{0.0821 atm L/mol K\times 298 K}=0.178 mol[/tex]
0.178 moles of oxygen gas molecules were collected.
Given: 2Fe203 + 3C —> 4Fe + 3CO2
for the reaction shown, which two compounds have a mole ratio of 4/3?
A. Fe to CO2
B. Fe2O3 to C
C. C to Fe
D. Fe2O3 to Fe
Answer : The correct option is, (C) C to Fe
Explanation :
The given chemical reaction is:
[tex]2Fe_2O_3+3C\rightarrow 4Fe+3CO_2[/tex]
By the stiochiometry we can say that, 2 moles of [tex]Fe_2O_3[/tex] react with 3 moles of C to gives 4 moles of Fe and 3 moles of [tex]CO_2[/tex].
From the balanced chemical reaction we conclude that,
As, 3 moles of C produces 4 moles of Fe
So, 1 mole of C produces [tex]\frac{4}{3}[/tex] moles of Fe
That means, the moles of ratio of C to Fe is 4 : 3
Therefore, the correct option is (C) C to Fe
Hydroxyapatite, Ca 10 ( PO 4 ) 6 ( OH ) 2 , has a solubility constant of Ksp = 2.34 × 10 − 59 , and dissociates according to Ca 10 ( PO 4 ) 6 ( OH ) 2 ( s ) − ⇀ ↽ − 10 Ca 2 + ( aq ) + 6 PO 3 − 4 ( aq ) + 2 OH − ( aq ) Solid hydroxyapatite is dissolved in water to form a saturated solution. What is the concentration of Ca 2 + in this solution if [ OH − ] is fixed at 1.80 × 10 − 6 M ?
Answer: 4M
Explanation:
Which energy resource causes the most safety concerns?
A wind
B petroleum
C nuclear
D coal
Answer: nuclear
Explanation:
Nuclear energy resource causes the most safety concerns. Therefore, option C is correct.
What do you mean by nuclear energy ?Nuclear energy is the energy contained within an atom's nucleus, or core. Nuclear energy can be used to generate electricity, but it must be liberated from the atom first.
Nuclear power is a zero-emission source of clean energy. Fission, the process of splitting uranium atoms to produce energy, is used to generate power. The heat produced by fission is used to generate steam, which spins a turbine to generate electricity without emitting the harmful byproducts that fossil fuels do.
Coal, oil, and gas are by far the most significant contributors to global climate change, accounting for more than 75% of global greenhouse gas emissions and nearly 90% of total carbon dioxide emissions.
Thus, option C is correct.
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Calculate the number of moles of sodium hydroxide in 8g of sodium hydroxide (NaOH). Na=23 O=16 H=1
Answer:
0.2 mol
Explanation:
Use the given values to find the molar mass. The molar mass is 40 g/mol.
23 + 16 + 1 = 40
Using the molar mass, convert grams to moles.
(8 g)/(40 g/mol) = 0.2 mol
You have 0.2 mol of sodium hydroxide.
You are high up in the mountains and boil water to make some tea However, when you drink your tea, it is not as hot as it should be. You try again and again, but the water is just not hot enough to make a hot cup of tea. Which is the best explanation for this result? High in the mountains, the air pressure is significantly less than 1 atm, so the boiling point of water is much lower than at sea level.
Answer:
The air pressure is significantly less than 1 atm, so the boiling point of water is much lower than at sea level.
Explanation:
This has to do with Gay Lussac's Law (a.k.a pressure law) which in essence means that when pressure goes up, temperature goes up and when pressure decreases, temperature decreases. This is why when the air pressure is signifcantly less than 1 atm (the pressure at sea level), the boiling point of water is much lower than at sea level.
The best explanation for the scenerio is : High in the mountains , the air pressure is significantly less than 1 atm, so the boiling point if water is much lower than at sea level.
The higher you go above sea level the lower the air pressure and this will significantly affect the temperature at which certain liquids ( water ) will boil. therefore the boiling point of water will be much lower than at sea level.
In this scenerio the application of Gay Lussac's law comes in
Gay Lussac's law states that the pressure of gas is directly proportional to its temperature at constant volume
Hence we can conclude that The best explanation for the scenerio is : High in the mountains , the air pressure is significantly less than 1 atm, so the boiling point if water is much lower than at sea level.
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Bubbles and fizzing can be seen instantly when baking soda is mixed with vinegar. The bubbles are evidence of which of the following?
Describe a main goal of primary treatment in a modern sewage treatment plant.
Answer:
The goal is to remove both heavy solids and floating oils
Explanation:
Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface. The settled and floating materials are removed and the remaining liquid may be discharged.
What kind of solid often has the highest melting points?
Covalent network solids often have the highest melting points. These solids are characterized by a network of covalent bonds that extend throughout the material, creating a very stable and strong structure.
Materials with high melting points typically have strong intermolecular forces. In the case of covalent network solids, such as diamond (pure carbon) or silicon carbide, each atom is bonded to several others in a lattice structure, creating an incredibly strong bond throughout the entire structure. This extensive network of strong bonds requires a large amount of energy to break apart, thus resulting in very high melting points. Molecular solids, where molecules are held together by weaker forces such as van der Waals forces, generally have much lower melting points because these intermolecular forces are much easier to overcome. Ionic solids also have high melting points, but not typically as high as covalent network solids, due to the nature of ionic bonds which are strong, but localized between individual pairs of ions rather than throughout the entire structure.
Given a diprotic acid, h2a, with two ionization constants of ka1 = 2.3× 10–4 and ka2 = 3.0× 10–12, calculate the ph for a 0.107 m solution of naha.
To calculate the pH of a 0.107 M NaHA solution, where HA is part of a diprotic acid with given Ka values, HA^-− dissociates in water according to its first ionization step. The pH is determined using the Ka1 value and is calculated to be approximately 1.80.
Explanation:To calculate the pH for a 0.107 M solution of NaHA, where HA is a diprotic acid (H2A), given Ka1 = 2.3× 10–4 and Ka2 = 3.0× 10–12, we first need to consider what happens when NaHA dissolves in water.
NaHA will dissociate to form NA+ and HA−. Since the concentration of NaHA is relatively high and Ka1 is significantly greater than Ka2, we can assume that the HA− will primarily dissociate according to the first ionization step, while the second ionization can be neglected in this approximation.
The ionization can be represented as:
HA−(aq) + H2O(l) → A2−(aq) + H3O+(aq).
Writing the expression for Ka1 we have:
Ka1 = [H3O+][A2−]/[HA−].
Assuming that [H3O+] = [A2−], we can simplify this to:
Ka1 = [H3O+]^2/[HA−].
Rearranging and solving for [H3O+], we get:
[H3O+] = √(Ka1 × [HA−]). Substituting the given values in:
[H3O+] = √(2.3× 10–4 × 0.107) = √(2.461× 10–4) ≈ 1.57× 10–2.
Using the formula for pH, pH = -log[H3O+], we find:
pH = -log(1.57× 10–2) ≈ 1.80.
Thus, the pH of the 0.107 M NaHA solution is approximately 1.80.
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The pH of a 0.107 M solution of NaHA, derived from the diprotic acid H₂A, is calculated to be approximately 6.24.
To calculate the pH of a 0.107 M solution of NaHA, a salt derived from the diprotic acid H₂A, we will consider that NaHA will primarily exist as HA⁻ in the solution. This involves both the first and second ionization constants of the diprotic acid.
Given:
Ka1 = 2.3 × 10⁻⁴Ka2 = 3.0 × 10⁻¹²Concentration of NaHA (HA⁻) = 0.107 MStep-by-step calculation:
The dissolution of NaHA completely dissociates into Na⁺ and HA⁻. Adding NaHA will increase [HA⁻].The equilibrium for the second dissociation step of the diprotic acid H₂A (HA⁻ ⇌ H⁺ + A²⁻) is significant here:Ka₂ = [H⁺][A²⁻] / [HA⁻]
Assume the initial concentration of HA⁻ is approximately equal to the initial concentration of NaHA (0.107 M) as the dissociation is minimal. Let the change in concentration be 'x.'
Hence:
Ka₂ = 3.0 × 10⁻¹² = (x)(x) / (0.107 - x) ≈ x² / 0.107
Solving for 'x':
x = [H⁺] = √(Ka₂ × 0.107) = √(3.0 × 10⁻¹² × 0.107) ≈ 5.7 × 10⁻⁷ M
pH = -log[H⁺] = -log(5.7 × 10⁻⁷) ≈ 6.24
Therefore, the pH of a 0.107 M solution of NaHA is approximately 6.24
The final solution had a volume of 1.0L and a molarity of 0.925. How many moles of Nickel (II) chloride were present in the solution?
Answer: The moles of nickel (II) chloride were present in the solution are 0.925
Explanation:
Molarity is defined as the number of moles of solute dissolved per liter of the solution.
[tex]Molarity=\frac{n}{V_s}[/tex]
where,
Molarity = 0.925
n= moles of solute = 0.2
[tex]V_s[/tex] = volume of solution in L = 1.0 L
Now put all the given values in the formula of molarity, we get
[tex]0.925=\frac{moles}{1.0L}[/tex]
[tex]moles=0.925\times 1.0=0.925[/tex]
Therefore, the moles of nickel (II) chloride were present in the solution are 0.925
The radius of the smaller circle is 8 feet. The distance from the rim of the inner circle to the rim of the outer circle is 3 feet. A circular garden with a radius of 8 feet is surrounded by a circular path with a width of 3 feet. What is the approximate area of the path alone?
Answer:
178.98 sq. feet
Explanation:
The path and the garden has been shown in the figure below. The green area is the garden and the area in brown is the path.
It has been given that,
Radius of garden = 8 feet
So, the area of garden = 3.14 × 8 × 8 = 200.96 sq. feet
The total radius of the land including garden and path = 8 + 3 = 11 feet
So, the total are of land including garden and path = 3.14 × 11 × 11 = 379.94 sq. feet
So, the area of path = Total area of the land - area of garden
Area of path = 379.94 - 200.96 = 178.98 sq. feet
Answer:
c 178.98 ft
Explanation:
What is the Molarity of a solution of HNO3 if it contains 12.6 moles in a
0.75 L solution? *
Answer:
M = 16.8 M
Explanation:
Data: HNO3
moles = 12.6 moles
solution volume = 0.75 L
Molarity is represented by the letter M and is defined as the amount of solute expressed in moles per liter of solution.
[tex]M=\frac{moles}{solution volume}[/tex]
The data is replaced in the given equation:
[tex]M=\frac{12.6 mol}{0.75L}=16.8\frac{mol}{L}[/tex]
Answer:
The correct answer is 16.8 M
Explanation:
The molarity (M) of a solution is the number of moles of solute in 1 liter of solution. The HNO₃ solution contains 12.6 moles of solute (in this case the solute is HNO₃) in 0.75 liters. In order to find the molarity, we have to divide the number of moles into the volume in liters as follows:
M = 12.6 moles/0.75 L = 16.8 moles/L = 16.8 M
If it takes 43.32 mL of 0.1 M NaOH to neutralize a 50 mL HCl solution, what is the molarity of HCI?
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If gas A (particle mass 46 g/mol) effuses with an average speed of 515 m/s, find the rate of effusion of gas B (particle mass = 92g/mol)
The rate of effusion of gas B is 728.32 m/s
Explanation:
Given:
Mass of A, m₁ = 46 g/mol
Rate of effusion of A, R₁ = 515 m/s
Mass of B, m₂ = 92 g/mol
Rate of effusion of B, R₂ = ?
We know:
[tex]\frac{R_1}{R_2} = \sqrt{\frac{M_2}{M_1} }[/tex]
Substituting the value we get:
[tex]\frac{515}{R_2} = \sqrt{\frac{92}{46} } \\\\\frac{515}{R_2} = \sqrt{2} \\\\R_2 = \frac{515}{\sqrt{2} } \\\\R_2 = 728.32 m/s[/tex]
Therefore, the rate of effusion of gas B is 728.32 m/s
The central atom in the chlorite anion, ClO2- is surrounded by: Question 5 options: one bonding and three unshared pairs of electrons. two bonding and two unshared pairs of electrons. two bonding and one unshared pair of electrons. two double bonds and no unshared pairs of electrons.
Answer:
two bonding and two unshared pair of electrons.Explanation:
Chlorite anion, ClO₂⁻ has one atom of chlorine and two atoms of oxygen.
Chlorine atom has 7 valence electrons (group 17 of the periodic table) and oxygen has 6 valence electrons (group 16 of the periodic table).
Thus, in total the anion has 7 + 6×2 electrons, plus an additional electron indicated by the negative charge of the anion: 7 + 12 + 1 = 20 valence electrons, that must be distributed among the three atoms.
Being chlorine the most electronegative atom, you place it in the center. surrounded by the two oxygen atoms.
Thus, so far:
O Cl O (pending to place the valence electrons.
You can put two electrons between each chlorine and oxygen atoms to form the bonds:
O : Cl : O
Also, complete the octets:
. . . . . .
: O : Cl : O :
. . . . . .
That structure works because:
there are 20 electronsevery atom has 8 valence electronsBut you need to calculate the formal charges on each atom:
For chlorine:
7 valence electrons - 4 nonbonding valence electrons - 4/2 bonding electrons = 7 - 4 - 2 = + 1.For each oxygen:
6 valence electrons - 6 nonbonding valence electrons - 2/2 bonding electrons = 6 - 6 - 1 = -1The total charge of the anion is +1 -1 - 1 = -1.
And the complete structure with the charge is:
. . . . . .
[ : O : Cl : O : ] ⁻
. . . . . .
The square bracketts comprise the entire anion and the negative charge is for the entire structure.
In this structure, the central atom (Cl) is surrounded by two bonding and two unshared pairs of electrons. (this is the answer to the question).
There is another structure which minimizes the formal charge, which will be preferred. It is by making a double bond between chlorine and one of the oxygen atoms, by moving two of the atoms beside one chlorine.
That structure is:
. . . . . .
: O : Cl :: O
. . . . . .
There you have 20 valence electrons and complete octets too, but the formal charges are:
Chlorine:
7valence electrons - 4 nonbonding electrons - 6/2 bonding electrons = 7 - 4 - 3 = 0The oxygen on the left is equal to the previous structure, thus - 1 forma charge.
The oxygen on the right:
6 valence electrons - 4 nonbonding electrons - 4/2 bonding electrons = 6 - 4 - 2 = 0Hence, this las structure minimizes the formal charges and is preferred.
This is:
. . . . . .
: O : Cl :: O
. . . . . .
But you must add the negative charge which belongs to the complete anion:
. . . . . .
[ : O : Cl :: O ] ⁻
. . . . . .
The square brackets comprise the entire anion and the negative charge is for it.
Hence, in this other structue the central atom, chlorine, is surrounded by six bonding electrons and four nonbonding electrons.
To which domain does the animal kingdom belong?
Answer:
Eukaryote vote me brainleist
Explanation:
a sealed container filled with argon gas at 35 c has a pressure of 832 torr. if the volume of the container is decreased by a factor of 2 what will happen to the pressure? you may assume the temperature remains at 35 c
Answer:
If the volume of the container is decreased by a factor of 2 the pressure is is increased by the same factor to 1664 torr.
Explanation:
Here we have Boyle's law which states that, at constant temperature, the volume of a given mass of gas is inversely proportional to its pressure
V ∝ 1/P or V₁·P₁ = V₂·P₂
Where:
V₁ = Initial volume
V₂ = Final volume = V₁/2
P₁ = Initial pressure = 832 torr
P₂ = Final pressure = Required
From V₁·P₁ = V₂·P₂ we have,
P₂ = V₁·P₁/V₂ = V₁·P₁/(V₁/2)
P₂ = 2·V₁·P₁/V₁ = 2·P₁ = 2× 832 torr = 1664 torr
Answer:
The pressure will increase by a factor of 2 and is now 1664 torr
Explanation:
The question says for us to assume that temperature is constant. Now, since we are given pressure and volumw, we will use Boyle's law which is a law stating that the pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature i.e V ∝ 1/P
Thus, PV = K
Where K is a constant.
So,
P₁•V₁ = P₂•V₂ = k
Where:
P₁ = Initial pressure
V₁ = Initial volume
P₂ = Final pressure
V₂ = Final volume = V₁/2
From the question, P₁ = 832 torr ; we are told that volume is decreased by 2,thus, V₂ = V₁/2
Now, we want to find out what will happen to the pressure P₂.
Let's make P₂ the subject;
P₁•V₁ = P₂•V₂
Thus, P₂ = (P₁•V₁)/V₂
Plugging in the relevant values to obtain ;
P₂ = (P₁•2V₁)/V₁
V₁ will cancel out and we have;
P₂ = 2P₁
Now, we are given that P₁ = 832 torr, Thus,
P₂ = 2P₁ = 2× 832 torr = 1664 torr
What are the three domains of life?
Plantae, Animalia, and Fungi
class, kingdom, and phylum
Eubacteria, family, and Eukarya
Bacteria, Archaea, and Eukarya
what information is required to calculate the average atomic mass of an element
Answer:
The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance
Explanation:
To determine the average atomic mass, we require abundance of every isotope in the nature.
Average atomic mass is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.
3. What is a major disadvantage of
environmental science?
A. Lack of government funding
B. Inability to control variables
C. Outdated technology
Answer:
I think b if not then c hopefully this helps
What volume of water should be used to dissolve 19.6 g of LiF to create a 0.320 M solution?
Answer:
2.4 litters of water are required.
Explanation:
Given data:
Mass of LiF = 19.6 g
Molarity of solution = 0.320 M
Volume of water used = ?
Solution:
Number of moles = mass/molar mass
Number of moles = 19.6 g/ 26 g/mol
Number of moles = 0.75 mol
Volume required:
Molarity = number of moles/ volume in L
Now we will put the values in above given formula.
0.320 M = 0.75 mol / volume in L
Volume in L = 0.75 mol /0.320 M
M = mol/L
Volume in L = 2.4 L
2.36 liters of water is needed to dissolve 19.6 grams of LiF to create a 0.320 M solution.
To determine the volume of water needed to create a 0.320 M solution of LiF, we can use the formula:
[tex]\[ C = \frac{n}{V} \][/tex]
where [tex]C[/tex] is the concentration in moles per liter, [tex]n[/tex] is the number of moles of the solute, and [tex]V[/tex] is the volume of the solution in liters. We can rearrange this formula to solve for [tex]\( V \):[/tex]
[tex]\[ V = \frac{n}{C} \][/tex]
First, we need to calculate the number of moles of LiF:
[tex]\[ n = \frac{\text{mass of LiF}}{\text{molar mass of LiF}} \][/tex]
The molar mass of LiF is approximately 25.94 g/mol (6.94 g/mol for Li and 19 g/mol for F). Now we can calculate the number of moles of LiF:
[tex]\[ n = \frac{19.6 \text{ g}}{25.94 \text{ g/mol}} \][/tex]
[tex]\[ n \approx 0.755 \text{ mol} \][/tex]
Now that we have the number of moles, we can use the concentration to find the volume:
[tex]\[ V = \frac{0.755 \text{ mol}}{0.320 \text{ M}} \][/tex]
[tex]\[ V \approx 2.36 \text{ L} \][/tex]
How many liters of water can be boiled by burning 1 kg of propane?
Round your answer to the nearest whole number.
Answer:
2037 L
Explanation:
Step 1:
The balanced equation for the reaction involving the burning of propane. This is given below:
C3H8 + 5O2 —> 3CO2 + 4H2O
Step 2:
Determination of the number of mole in 1kg of propane (C3H8).
Mass of C3H8 = 1kg = 1000g
Molar Mass of C3H8 = (3x12) + (8x1) = 36 + 8 = 44g/mol
Number of mole = Mass/Molar Mass
Number of mole of C3H8 = 1000/44
Number of mole of C3H8 = 22.73 moles
Step 3:
Determination of the number of mole of water produced by burning 1 kg of propane (C3H8). This is illustrated below:
From the balanced equation above,
1 mole of C3H8 boiled 4 moles of H2O.
Therefore, 22.73 moles of C3H8 will produce = 22.73 x 4 = 90.92 moles of H2O.
Step 4:
Determination of the volume of H2O. This is illustrated below:
1 mole of a gas occupy 22.4L.
Therefore, 90.92 moles of H2O will occupy = 90.92 x 22.4 = 2037 L.
Therefore, 2037 L of water is boiled by burning 1kg of propane (C3H8)
How many grams are in 1.19x10^27 particles of cl2
Answer:
Option D. 1.40x10^5g
Explanation:
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02x10^23 particles. This equally means that 1mole of Cl2 contains 6.02x10^23 particles.
1 mole of Cl2 =2 x 35.5 = 71g.
Now, If 71g of Cl2 contains 6.02x10^23 particles,
Then Xg of Cl2 will contain 1.19x10^27 particles i.e
Xg of Cl2 = (71x1.19x10^27)/(6.02x10^23)
Xg of Cl2 = 1.40x10^5g
Therefore, 1.40x10^5g of Cl2 contain 1.19x10^27 particles
help me please ...online claases got me crazy
Answer:
1,000 - 2,000
Explanation:
Just look at the bar graph. The bar ends at about 1,500 which is between 1,000 - 2,000. That is the only valid answer for this problem.
The frequency of individuals with doctorates who work in the field of physical science is 0-1,000.
Physical science is a branch of natural science that studies non-living systems and the fundamental principles governing the physical world. It encompasses physics and chemistry, exploring the properties and behavior of matter and energy. Physics delves into the nature of space, time, motion, and force, addressing phenomena from the smallest particles to the vastness of the cosmos.
Chemistry, on the other hand, focuses on the composition, structure, properties, and changes of matter. Together, these disciplines provide a comprehensive understanding of the physical universe, forming the basis for technological advancements and contributing to our comprehension of the fundamental laws that govern the natural world.
A girl holds the end of rope tied at the other end to a tree. The rope is making 3 waves.
Which statements describe the wave? Check all that apply.
~The wave is a mechanical wave.
~The wave is an electromagnetic wave.
~The wave moves energy through matter.
~The wave moves energy through space without matter.
~The wave transfers energy parallel to the motion of the wave.
~The wave transfers energy perpendicular to the motion of the wave.
Answer:
1,3,6
Explanation:
Answer:
1,3,6
Explanation:
What is a nonrenewable energy source ?
A. An energy source that can be reused or replaced
B. An energy source that has no harmful byproducts
C. An energy source that cannot be reused or replaced D. An energy source that produces harmful byproducts
Explanation:
A non-renewable energy source (also called a finite source) is a natural resource that cannot be readily replaced by natural means at a quick pace enough to keep up with consumption.
An example is a carbon-based fossil fuel.
Answer:
C. An energy source that cannot be reused or replaced
Explanation:
non-renewable = cannot be renewed
Chemistry Help!
Pressure has the greatest effect on the solubility of
Group of answer choices
a. gases in liquids.
b. solids in liquids.
c. liquids in liquids
d. liquids in liquids
Answer:A
Explanation:Henry’s Law
Final answer:
Pressure has very little effect on the solubility of solids or liquids, but has a significant effect on the solubility of gases.
Explanation:
Pressure has very little effect on the solubility of solids or liquids, but has a significant effect on the solubility of gases. Gas solubility increases as the partial pressure of a gas above the liquid increases. For example, when carbonated beverages are packaged, they are done so under high CO₂ pressure so that a large amount of carbon dioxide dissolves in the liquid. When the bottle is open, the equilibrium is disrupted because the CO₂ pressure above the liquid decreases, causing bubbles of CO₂ to rapidly exit the solution and escape out of the top of the open bottle.
A student finds that 4700 J of heat are required to raise the temperature of 250.0 g of metal X from 22°C to 63°C. Based on the data in the table, what is the identity of metal X based upon finding the specific heat?
Explanation:
the answer and explanation is in the picture
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A student finds that 4700 J of heat are required to raise the temperature of 250.0 g of metal X from 22°C to 63°C. 0. 459J/g/C is the identity of metal X.
What is specific heat ?The amount of heat required to raise the temperature of one gram of a substance by one Celsius degree is defined as specific heat.
Heat capacity, also known as specific heat, is the amount of heat required per unit mass to raise the temperature by one degree Celsius.
Specific heat is useful in determining processing temperatures and the amount of heat required for processing, as well as in distinguishing between two polymeric composites.
The specific heat capacity of a substance is typically determined by measuring the heat capacity of a sample of the substance, usually with a calorimeter, and dividing by the sample's mass.
Given:
Heat = 4700 J
M = 250.0 g
T = 63 - 22 = 41°C
4700 = 250 ×C× 41
4700 = 10250 × C
C = 459J/g/C
Thus, A student finds that 4700 J of heat are required to raise the temperature of 250.0 g of metal X from 22°C to 63°C. 0. 459J/g/C is the identity of metal X.
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