Select the two statements that are TRUE about compounds

Chemistry

1 answer:

patriot [66]3 years ago

4 0

a) a compound always contains at least 2 elements

is the answer

You might be interested in

POINTS AND BRAINIEST ANSWER!!!!

denis23 [38]

Answer:

hydrgen = i think it is 4

oxygen = i think it is 3

Explanation:

3 0

3 years ago

Read 2 more answers

How is a pure substance different from a mixture?

QveST [7]

The answer is A. Mixtures can be separated by physical means

A pure substance cannot be separated.

3 0

3 years ago

Read 2 more answers

The number 0.00003007 expressed in exponential notation is

antiseptic1488 [7]

The exponential is 3.007 times 10 to the -5

5 0

3 years ago

11C. Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to standardize strong base solut

Llana [10]

For the reactants,

The oxidation number of hydrogen = +1
The oxidation number of oxygen = -2
The oxidation number of arsenic = +5
The oxidation number of carbon = +3

For the products,

The oxidation number of hydrogen = +1
The oxidation number of oxygen = -2
The oxidation number of arsenic = +3
The oxidation number of carbon = +4

Here, arsenic (+5 to +3) and carbon (+3 to +4) are the only oxidation numbers changing.

Note that an increase in oxidation number means electrons are lost. Thus oxidation is occurring, and a decrease in oxidation number means electrons are being gained, and thus reduction is occurring.

Also, the compound that contains the element being oxidized is the reducing agent, and the compound that contains the element being reduced is the oxidizing agent.

So, the answers are:

name of the element oxidized: Carbon

name of the element reduced: Arsenic

formula of the oxidizing agent: $\text{H}_{3}\text{AsO}_{4}$