2 years ago

The heat exchange in chemical reactions is due to change in

Chemistry

2 answers:

oksian1 [2.3K]2 years ago

8 0

The heat exchange in chemical reactions is due to change in enthalpy.

kirza4 [7]2 years ago

5 0

The enthalpy is the heat added to or lost in a system.

You might be interested in

Interstellar space has an average temperature of about 10 K , and an average density of hydrogen atoms of about one hydrogen ato

Bas_tet [7]

Answer:

$2.2508\times 10^{19} m$ meter the mean free path of hydrogen atoms in interstellar space.Explanation:

The mean free path equation is given as:

$\lambda =\frac{1}{\sqrt{2}\pi d^2 n}$

Where"

d = diameter of hydrogen atom in meters

n = number of molecules per unit volume

We are given: d = 100 pm = $100\times 10^{-12}= 10^{-10} m$

$n = 1 m^{-3}$

$\lambda =\frac{1}{\sqrt{2}\pi (10^{-10} m)^2\times 1 m^{-3}}$

$\lambda =2.2508\times 10^{19} m$

$2.2508\times 10^{19} m$ meter the mean free path of hydrogen atoms in interstellar space.

7 0

2 years ago

A student performed an investigation at sea level. First she placed 400 mL of water in four different containers. Then she place

Pachacha [2.7K]

The answer is b your welcome

4 0

1 year ago

20. What volume of 0.350M KMnO4 solution must be diluted to prepare 600. mL of

Dafna1 [17]

Answer:

25.7 mL

Explanation:

Step 1: Given data

Initial volume (V₁): ?

Initial concentration (C₁): 0.350 M

Final volume (V₂): 600 mL

Final concentration (C₂): 0.150 M

Step 2: Calculate the volume of the initial solution

We have a concentrated solution and we want to prepare a diluted one. We can calculate the initial volume using the dilution rule.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0.150 M × 600 mL / 0.350 M

V₁ = 25.7 mL

3 0

2 years ago

How many atoms of Mg are present in 97.22 grams of Mg?

Hitman42 [59]

Answer:

b.......

Explanation:

b.....

5 0

2 years ago

A chemical change involves the formation or the breaking of bonds. true or false

dusya [7]

The answer would be true.

5 0

2 years ago

Read 2 more answers