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3 years ago

What information does the potential energy diagram reveal about a reaction?

Chemistry

2 answers:

Pie3 years ago

8 0

Answer:

It shows whether the reaction is exothermic or endothermic.

Explanation:

luda_lava [24]3 years ago

7 0

Answer: The energy changes that occur during a chemical reaction can be shown in a diagram called a potential energy diagram, or sometimes called a reaction progress curve. A potential energy diagram shows the change in potential energy of a system as reactants are converted into products.

Explanation:

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A balloon contains 3300 mL of helium gas at 63 °C. What is the final volume, in milliliters, of the gas when the temperature cha

Nesterboy [21]

The final volume : 3.4 L

<h3>Further explanation</h3>

Charles's Law

When the gas pressure is kept constant, the gas volume is proportional to the temperature

$\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}$

V₁=3300 ml

T₁=63 + 273=336 K

T₂=78+273=351 K

the final volume :

$\tt V_2=\dfrac{V_1.T_2}{T_1}\\\\V_2=\dfrac{3300\times 351}{336}\\\\V_2=3447.3~ml\rightarrow 2~sig.~fig.\rightarrow 3.4~L$

8 0

3 years ago

Approximately 0.0972 g of carbon dioxide gas can be dissolved in 100 mL of water at 40°C expressed in terms of parts per million

IRISSAK [1]

Answer:

972 ppm

Explanation:

Percent (parts per hundred - pph), parts per million & parts per billion are ratios of a component of interest divided by total mix of several components.

That is, given 28%, this says 28/100, or 28ppm says 28/10⁶, or 28ppb says 28/10⁹.

To convert from the given (=> any of the three concentration ratios) simply multiply (X) where you wish to go.

Examples:

Convert 35% to ppm and ppb
35% = (35/100) x 10⁶ppm = 3.5 x 10⁵ ppm
_______________________________

Convert 43 ppm to %
43 ppm = (43/10⁶) x 100% = 4.3 x 10³%
______________________________
Convert 81 ppb to ppm
81 ppb = (81/10⁹) x 10⁶ppm = 8.1 x 10⁻² ppm

Notice how each 'Given' is expressed as a ratio of amount/100 (given pph or %), or amount/10⁶ (given ppm) or amount/10⁹ (given ppb). All you need to do here is multiply by where you want to go.

=> Given % = (amount/100) x 10⁶ => ppm

=> Given ppm = (amount/10⁶) x 100 => %, or pph

=> Given ppb = (amount/10⁹) x 10⁶ => ppm

Given ratio x 100 = %, or x 10⁶ => ppm or x 10⁹ => ppb

Your Problem:

Given = (0.0972g/100g) x 10⁶ppm = 972 ppm

or, if you wish ppb => (0.0972g/100g) x 10⁹ppb = 972,000 ppb

5 0

3 years ago

Consider the following chemical equilibrium: 4NH3+3O2=2N2+6H2O Now write an equation below that shows how to calculate from for

erma4kov [3.2K]

This is an incomplete question, here is a complete question.

Consider the following chemical equilibrium:

$4NH_3(g)+3O_2(g)\rightleftharpoons 2N_2(g)+6H_2O(g)$

Now write an equation below that shows how to calculate Kp from Kc for this reaction at an absolute temperature T. You can assume T is comfortably above room temperature. If you include any common physical constants in your equation be sure you use their standard symbols, found in the ALEKS Calculator.

Answer :

The expression of $K_c$ will be,

$K_c=\frac{[N_2]^2[H_2O]^6}{[NH_3]^4[O_2]^3}$

The expression of $K_p$ will be,

$K_p=K_c(RT)$

Explanation :

Equilibrium constant : It is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.

The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.

As we know that the concentrations of pure solids and liquids are constant that is they do not change. Thus, they are not included in the equilibrium expression.

The given equilibrium reaction is,

$4NH_3(g)+3O_2(g)\rightleftharpoons 2N_2(g)+6H_2O(g)$

The expression of $K_c$ will be,

$K_c=\frac{[N_2]^2[H_2O]^6}{[NH_3]^4[O_2]^3}$

The relation between $K_p$ and $K_c$ is:

$K_p=K_c(RT)^{\Delta n}$