All categories

3 years ago

A)

Chemistry

1 answer:

jeka57 [31]3 years ago

4 0

Answer:

Explanation:

a )

From the graph given , energy of reactant = 0

b )

energy of product = -15 kJ

c )

ΔH = energy of product - energy of reactant

= -15 - 0 = - 15 kJ

ΔH is negative so reaction is exothermic .

d ) Activation energy = 25 - 0 = 25 kJ .

e ) Energy released = 15 kJ .

You might be interested in

Which of the following is the smallest volume? (2 points) 30 cm3 2,500 mL 25 m3 2.0 x 10-1 L

aliya0001 [1]

2500mL is the answer

6 0

3 years ago

What are OBSERVABLE PROPERTIES

svp [43]

Answer:Observable properties are characteristics or things about materials or objects that we can describe using our five senses. Color, texture, hardness, and flexibility are all things we can determine with our senses.

Explanation:

5 0

3 years ago

How many grams of carbon are required to produce 0.460 moles of SiC?

Anna71 [15]

Answer:

Sick Core corona +iep =Qurintine

6 0

3 years ago

Please help I will give extra points

Svetllana [295]

I think that it would be 12

7 0

3 years ago

Read 2 more answers

Identify and label the Brønsted-Lowry acid, its conjugate base, the Brønsted-Lowry base, and its conjugate acid in each of the f

julia-pushkina [17]

Explanation:

As per Brønsted-Lowry concept of acids and bases, chemical species which donate proton are called Brønsted-Lowry acids.

The chemical species which accept proton are called Brønsted-Lowry base.

(a) $HNO_3 + H_2O \rightarrow H_3O^+ + NO_3^-$

$HNO_3$ is Bronsted lowry acid and $NO_3^-$ is its conjugate base.

$H_2O$ is Bronsted lowry base and $H_3O^+$ is its conjugate acid.

(b)

$CN^- + H_2O \rightarrow HCN + OH^-$

$CN^-$ is Bronsted lowry base and HCN is its conjugate acid.

$H_2O$ is Bronsted lowry acid and $OH^-$ is its conjugate base.

(c)

$H_2SO_4 + Cl^- \rightarrow HCl + HSO_4^-$

$H_2SO_4$ is Bronsted lowry acid and $HSO_4^-$ is its conjugate base.

Cl^- is Bronsted lowry base and HCl is its conjugate acid.

(d)

$HSO_4^-+OH^- \rightarrow SO_4^{2-}+H_2O$

$HSO_4^-$ is Bronsted lowry acid and $SO_4^{2-}$ is its conjugate base.

OH^- is Bronsted lowry base and $H_2O$ is its conjugate acid.

(e)

$O_{2-}+H_2O \rightarrow 2OH^-$

$O_{2-}$ is Bronsted lowry base and OH- is its conjugate acid.

$H_2O$ is Bronsted lowry acid and OH- is its conjugate base.

6 0

3 years ago