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3 years ago

Atoms of two different elements react with each other when they have?

1 answer:

7 0

All other elements react with other elements to form compounds. In the special case where the reaction produces fixed numbers of the same types of atoms in exactly the same configuration, we say the elements have formed a molecule.

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Trina walked into the kitchen and saw that the cake she'd put in the refrigerator the night before was gone. She said to

rjkz [21]

Answer:

the answer is b

Explanation:

6 0

3 years ago

Carmen has a sample of matter. It is clear and smells sour. The sample is also thick but it flows when poured.

Lady bird [3.3K]

Answer:

Explanation:

Answer:

Its a liquid cause it flows

Explanation:

think about it none of the others make sense ice is a solid and its clear

something like a wall can be thick but it doesn't flow

8 0

3 years ago

A compound is a pure substance made up of two or more different atoms joined by chemical bonds. Consider the composition of the

wolverine [178]

Answer:

Carbon dioxide is a compound

Explanation:

It is formed by chemical combination of carbon and oxygen atoms

5 0

3 years ago

S<br> SIO₂ +3C Sic +20o<br> Sic ? mass in grams<br> С c-

seraphim [82]

Answer:

26.74g

Explanation:

The equation of the reaction is;

SIO₂ + 3C --> SiC +2CO

From the balanced equation, the relationship between SiC and C is;

3 mol of C produces 1 mol of SiC

Converting mol to mass using; Mass = moles * Molar mass

Mass of SiC = 1 mol * 40.11 g/mol = 40.11g

This means;

3 mol of C produces 40.11g of SiC

2 mol of C produces xg of SiC

3 = 40.11

2 = x

x = 2 * 40.11 / 3 = 26.74g

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3 years ago

Balance each skeleton reaction, use Appendix D to calculate E°cell, and state whether the reaction is spontaneous:(b) Hg₂²⁺(aq)

Olegator [25]

The given reaction is not spontaneous.

We must recognize changes in oxidation states that take place across elements in order to balance these equations. To accomplish this, keep in mind following guidelines:

A neutral element on its own has an oxidation number of zero.For a neutral molecule, the total number of oxidations must be zero.The net charge of an ion is equal to the sum of its oxidation numbers.In a compound: hydrogen prefers +1, oxygen prefers -2, fluorine prefers -1.In a compound with no oxygen present the other halogens will also prefer -1.

One of the mercury atoms is oxidized from +1 to +2 in the simple aqueous ion, for a loss of 1 electron.

Oxidation half-reaction:

$0.5 Hg^{2+} _{2} (aq)$ → $Hg^{2+} (aq) + 1e^-$