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3 years ago

What is activation energy

Chemistry

2 answers:

ANTONII [103]3 years ago

7 0

Answer:

the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.

Explanation:

Otrada [13]3 years ago

6 0

Answer:

The minimum amount of energy that the species must have to undergo a specified reaction

Explanation:

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When a sulfur (s) atom becomes an ion, what charge does it usually have?

algol [13]

Then it would become: S2-

Its charge will be -2.

6 0

3 years ago

Suppose you are a food chemist working for a company that makes and manufactures soda. Your job is to create a new soft drink wi

Mekhanik [1.2K]

Answer:

The answer to your question is given after the questions so I just explain how to get it.

Explanation:

Get the molecular weight of Phosphoric acid

H₃PO₄ = (3 x 1) + (31 x 1) + (16 x 4)

= 3 + 31 + 64

= 98 g

98 g ----------------- 1 mol

0.045 g --------------- x

x = (0.045 x 1) / 98

x = 0.045 / 98

x = 0.00046 moles or 4.6 x 10 ⁻⁴

Molarity = $\frac{moles}{volume}$

Molarity = $\frac{0.00046}{0.35}$

Molarity = 0.0013 or 1.31 x 10⁻³

Formula C₁V₁ = C₂V₂

V₁ = C₂V₂ / C₁

Substitution

V₁ = (0.0013)(1) / 0.01

Simplification and result

V₁ = 0.0013 / 0.1

V₁ = 0.13 l = 130 ml

7 0

3 years ago

What may occur when the burning of fossil fuels releases gaseous nitrogen oxides and sulfur dioxide into the atmosphere

Bond [772]

Global warming can take place from all the gas bult up. the sunlight is fltered and made focused on some points on the earth. The Glaciers recieve more warmth since they are colder and are melted down.

6 0

3 years ago

A reaction will be spontaneous only at low temperatures if both ΔH and ΔS are negative. For a reaction in which ΔH = −310.1 kJ/m

ruslelena [56]

Answer:

3211.12 K

Explanation:

The expression for the standard change in free energy is:

$\Delta G=\Delta H-T\times \Delta S$

Where,

$\Delta G$ is the change in the Gibbs free energy.

T is the absolute temperature. (T in kelvins)

$\Delta H$ is the enthalpy change of the reaction.

$\Delta S$ is the change in entropy.

For reaction to be spontaneous, $\Delta G$

Given, $\Delta H=-310.1\ kJ/mol=-310100\ J/mol$

$\Delta S=-89.00\ J/K.mol$

So,

$\Delta H-T\times \Delta S$

Thus, applying values as:-

$-310100-T\times (-89.00)$

So, T = 3484.27 K

The conversion of T( °C) to T(K) is shown below:

T( °C) = T(K) - 273.15

So,

T = (3484.27 - 273.15) K = 3211.12 K

<u>The temperature below which the reaction is spontaneous is:- 3211.12 K </u>

6 0

3 years ago

Can someone help me please

Nutka1998 [239]

Answer: The pH of the substance is 8.25. The solution is basic.

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydronium ion concentration. The acids have pH ranging from 1 to 6.9 , salts have pH of 7 and bases have pH ranging from 7.1 to 14.

$pH=-\log [H_3O^+]$

Putting in the values:

$pH=-\log[5.6\times 10^{-9}]$

$pH=8.25$

Thus as pH is more than 7, the solution is basic.

The pH of the substance is 8.25. The solution is basic.

5 0

3 years ago