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AysviL [449]
3 years ago
12

Fill in the blank with the correct number to balance the equation: 4Cr + 3O2 → ___Cr2O3. (Enter only a whole number.)

Chemistry
2 answers:
Tamiku [17]3 years ago
8 0

The answer should be 2.

You're welcome!

aleksklad [387]3 years ago
7 0

Answer:

2

Explanation:

In order to balance an equation the same amount of atoms of each element in the reactants (the substances on the left of the arrow) must appear in the products (the substances on the right of the arrow). In this particular case, we see that there are 4 Cr atoms and 3*2 = 6 Oxygen atoms as reactants, and the molecule formed has 2 Cr atoms and 3 Oxygen atoms, so if we multiplied the number of molecules by 2, then the equation get balanced, that is:

4Cr + 3O2 -> 2 Cr2O3

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<em>Question: </em><em>Which cup has more thermal energy?</em>

<em>                   A. 2 liter cup of milk</em>

<em>                   B. 1 liter cup of milk</em>

<em>Answer: A. 2 liter cup of milk</em>

<em />

<em>Explanation:</em>

We have milk in both of the containers. The milk in both containers is the same temperature, so we will have to measure the amount of molecules. The amount of molecules makes it warmer, and if it is warmer, that is more energy. 2 liters have more thermal energy than 1 liter, because it has more molecules.

Our answer is 2 liter cup of milk.

5 0
3 years ago
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3 years ago
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Explanation:

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4 years ago
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Answer:

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goldfiish [28.3K]

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7 0
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