3 years ago

Use the information from the diagram to calculate the enthalpy of combustion for methane. (HELP ASAPPP!!)

Chemistry

1 answer:

Blizzard [7]3 years ago

6 0

Answer:

where is the diagram sisters

You might be interested in

I WILL GIVE YOU BRAILEST!!!!!!!!!

Sholpan [36]

Answer:

atomic modifier

Explanation:

. Identify at least three reasons the Articles of Confederations failed as a governing document. In your opinion, evaluate which defect was most debilitating, using evidence and your knowledge of American government to justify your position. [5]

6 0

3 years ago

Read 2 more answers

Which atoms combine together during fusion reaction on the sun?

shusha [124]

Answer:

Hydrogen

Explanation:

5 0

3 years ago

Read 2 more answers

Let this be an easy 5 points for your brainly account all is ask for in return is a "thank you"

Svet_ta [14]

Answer:

The number of neutrons present in one atom of isotope of Silicon of mass 28 amu is<u> 14 neutrons</u>

Explanation:

Symbol of Si isotope

$_{14}^{28}\textrm{Si}$

<u>Number of Neutron = Mass number - Atomic Number</u>

Mass number = Total number of protons and neutrons present in the nucleus of the atom.For Si = 28 amu

Atomic Number = Total number of Protons present in the nucleus.

Si = 14

Number of neutron = 24 - 14

= 14

4 0

3 years ago

What is the Ka of a 0.0796 M solution of nitrous acid (HNO2) with a pH of 2.95?

Vadim26 [7]

Answer:

Coefficient = 1.58

Exponent = - 5

Explanation:

pH = 2.95

Molar concentration = 0.0796M

Ka = [H+]^2 / [HA]

Ka = [H+]^2 / 0.0796

Therefore ;

[H+] = 10^-2.95

[H+] = 0.0011220 = 1.122 × 10^-3

Ka = [H+] / molar concentration

Ka = [1.122 × 10^-3]^2 / 0.0796

Ka = (1.258884 × 10^-6) / 0.0796

Ka = 15.815 × 10^-6

Ka = 1.58 × 10^-5

Coefficient = 1.58

Exponent = - 5

4 0

3 years ago

Hi, May I have Chem help please? Please Keep the answer as simple as possible.

lesya [120]

Explanation:

a positively charged nucleus is surrounded by mostly empty space.

4 0

3 years ago