All categories

2 years ago

As the rate of physical weathering increases, the amount of chemical weathering also increases because

Chemistry

1 answer:

kolbaska11 [484]2 years ago

7 0

Answer:

Hehe!

Explanation:

Because Increased surface area provides more surface for chemical weathering to attack the rock,allowing chemical weathering to speed up.

You might be interested in

A 1.00 kg sample of Sb2S3 (s) and a 10.0 g sample of H2 (g) are allowed to react in a 25.0 L container at 713 K. At equilibrium,

Scorpion4ik [409]

Answer: The value of $K_c$ is coming out to be 0.412

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

For $Sb_2S_3$

Given mass of $Sb_2S_3$ = 1.00 kg = 1000 g (Conversion factor: 1 kg = 1000 g)

Molar mass of $Sb_2S_3$ = 339.7 g/mol

Putting values in equation 1, we get:

$\text{Moles of }Sb_2S_3=\frac{1000g}{339.7g/mol}=2.944mol$

For hydrogen gas:

Given mass of hydrogen gas = 10.0 g

Molar mass of hydrogen gas = 2 g/mol

Putting values in equation 1, we get:

$\text{Moles of hydrogen gas}=\frac{10.0g}{2g/mol}=5mol$

For hydrogen sulfide:

Given mass of hydrogen sulfide = 72.6 g

Molar mass of hydrogen sulfide = 34 g/mol

Putting values in equation 1, we get:

$\text{Moles of hydrogen sulfide}=\frac{72.6g}{34g/mol}=2.135mol$

The chemical equation for the reaction of antimony sulfide and hydrogen gas follows:

$Sb_2S_3(s)+3H_2(g)\rightarrow 2Sb(s)+3H_2S(g)$

Initial: 2.944 5

At eqllm: 2.944-x 5-3x 2x 3x

We are given:

Equilibrium moles of hydrogen sulfide = 2.135 moles

Calculating for 'x', we get:

$\Rightarrow 3x=2.135\\\\\Rightarrow x=\frac{2.135}{3}=0.712$

Equilibrium moles of hydrogen gas = (5 - 3x) = (5 - 3(0.712)) = 2.868 moles

Volume of the container = 25.0 L

Molarity of a solution is calculated by using the formula:

$\text{Molarity}=\frac{\text{Moles}}{\text{Volume}}$

The expression of $K_c$ for above equation, we get:

$K_c=\frac{[H_2S]^3}{[H_2]^3}$

The concentration of solids and liquids are not taken in the expression of equilibrium constant.

$K_c=\frac{(\frac{2.135}{25})^3}{(\frac{2.868}{25})^3}\\\\K_c=0.412$

Hence, the value of $K_c$ is coming out to be 0.412

3 0

3 years ago

Which of the following is the major advantage of using geothermal energy instead of using coal energy? Choice:

maxonik [38]

Answer:

C. Releases less carbon dioxide

Explanation:

since geothermal steams are directly from earths surface they do not have carbon dioxide therefore they can be used to rotate turbines ultimately generating electricity.

5 0

3 years ago

Do electrons spin in the same direction within an orbital?

tester [92]

Answer:

in an atom or molecule, no two electrons can have the same four electronic quantum numbers. As an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.

4 0

3 years ago

Calculate the enthalpy of combustion, δh∘comb, for c6h14. you'll first need to determine the balanced chemical equation for the

Vedmedyk [2.9K]

Answer: Enthalpy Change = (6 x -393.5) + (7 x -285.8) - (-204.6) + (19/2) 0.....??? like.. (6 x Enth CO2) + ( 7 x Enth H2O) - (Enth C6H14) + (19/2) Enth O2

3 0

3 years ago

Which action will slow down the rate of a reaction

Burka [1]

Answer is - Decreasing surface area of a solid reactant, rate of reaction can be slowed down.

Explanation: The quantity of a reactant species consumed or the quantity of product species formed in unit time in a chemical reaction is called rate of reaction. With passage of time, concentration of reactant decreases and concentration of product increases. Rate of reaction depends on various factors like- concentration of reactant, temperature, nature of reactant, catalyst and surface area of reactant.

By increasing the concentration of the reactants, rate of the reaction increases.

Presence of catalyst increases the rate of reaction.

With increase in temperature, kinetic energy of molecules increases which results to more number of effective collisions, so, rate of reaction increases.

With increase in the surface area of reactant, more number of molecules can react at a time and by decreasing the surface area of solid reactant rate of the reaction will diminish/ decrease.

4 0

3 years ago