We participate in the ______________________cycle every time we breathe. tectonic nitrogen phosphorus carbon-oxygen

Chemistry

1 answer:

podryga [215]4 years ago

8 0

Carbon-Oxygen
We breathe in oxygen, we breathe out carbon dioxide.

You might be interested in

The freezing temperature of water is zero on both the "K" and "C" scales. True False

Vera_Pavlovna [14]

False, 0 degrees on the K scale is absolute zero.

8 0

3 years ago

As much as 25% of the fruits and vegetables grown in Chinese agricultural regions rot before they can be brought to market. Whic

Katarina [22]

B because he a enjoys d disused disused Keisha dkid

4 0

3 years ago

Read 2 more answers

CO + 2H2 ⇌ CH3OH ΔH <0

sveta [45]

Answer:

C. The energy released as the bonds in the reactants are broken is greater than the energy absorbed as the bonds in the product are formed.

Explanation:

CO + 2H₂ ⇌ CH₃OH ΔH <0

As ΔH is negative, the given reaction is exothermic.

That means that <em>the enthalpy of the product is less than the enthalpy of the reactants</em>. In other words, part of the energy from the reactants is used to form new bonds (between C and H, for example), while the other part is transfered outside the system as heat.

Thus the correct answer is C.

5 0

3 years ago

Select the correct answer. How does an atom become a positively charged ion? A. By gaining one or more electrons B. By gaining o

ser-zykov [4K]

C. By losing one or more electrons

6 0

3 years ago

Read 2 more answers

How can you tell the difference between an ionic compound and a molecule?

slamgirl [31]

Explanation:

An ionic compound is defined as the compound formed by transfer of electrons from one atom to another.

For example, lithium atom on donating its one valence electron to chlorine atom will result in the formation of an ionic bond and the compound formed is LiCl.

A molecule is defined as a substance which can contain either same or different elements.

For example, $Cl_{2}$ , $MgSO_{4}$ etc are molecules.

A molecule can contain either a covalent or ionic bond. But an ionic compound will always contain an ionic bond.

7 0

3 years ago