3 years ago

Which of the following is an example of an environmental problem caused by chemicals?

Chemistry

1 answer:

Dmitrij [34]3 years ago

3 0

Answer: c

Explanation:

You might be interested in

Two atoms of calcium and one molecule of oxygen gas react and yield two molecules of calcium oxide.

Vitek1552 [10]

2Ca + O2 ——————-> 2CaO2

3 0

3 years ago

When we react a weak acid with a strong base of equal amounts and concentration, the component of the reaction that will have th

andriy [413]

Answer:

d. the conjugate base of the weak acid

Explanation:

The strong base (BOH) is completely dissociated in water:

BOH → B⁺ + OH⁻

The resulting conjugate acid (OH⁻) is a weak acid, so it remains in solution as OH⁻ ions.

By other hand, the weak acid (HA) is only slightly dissociated in water:

HA ⇄ H⁺ + A⁻

The resulting conjugate base (A⁻) is a weak base. Thus, it reacts with H⁺ ions from water to form HA, increasing the concentration of OH⁻ ions in the solution.

Therefore, the resulting solution will have a pH > 7 (basic).

8 0

2 years ago

All molecules are made up of: A)hydrogen B)minerals C)atoms D)gas

masya89 [10]

answer c atoms

i think that is correct

4 0

3 years ago

Read 2 more answers

How would adding the catalyst nitrogen monoxide (NO) affect this reaction?

marin [14]

Answer: The correct answer is Option A.

Explanation:

A catalyst is defined as the substance which increases the rate of the reaction without actually participating in the reaction.

This substance decreases the activation energy of the reactants, so as to proceed the reaction at a faster rate by increasing their effective collisions.

It does not affect the concentration of the reactants.

For the given reaction:

$2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)$