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Andreyy89
3 years ago
6

Someone help me with this science question pls

Chemistry
1 answer:
Sholpan [36]3 years ago
6 0

Answer: Can i see the question

Explanation:

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2. Chromium+oxygen - chromium(III) oxide <br>balanced​
sesenic [268]

Answer:

4Cr + 3O2 —> 2Cr2O3

Explanation:

Information from the question include:

Chromium + oxygen -> chromium(III) oxide

From the word equation given above, the equation can be written as follow:

Cr + O2 —> Cr2O3

The equation can be balance by doing the following:

There are 2 atoms of O on the left side and 3 atoms on the right side. It can be balance by putting 2 in front of Cr2O3 and 3 in front of O2 as shown below:

Cr + 3O2 —> 2Cr2O3

Now, we have 4 atoms of Cr on the right side and 1 atom on the left. It can be balance by putting 4 in front of Cr as shown below:

4Cr + 3O2 —> 2Cr2O3

Now the equation is balanced

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3 years ago
Why is subatomic particles not made up of atoms
OLEGan [10]
Because subatomic particles ARE what make up atoms.
7 0
3 years ago
An element has an atomic number of 27. How many protons and electrons are in a neutral atom of the element
Sergeu [11.5K]

Answer:

27 and 32

Explanation:

3 0
2 years ago
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Which best represents a homogeneous mixture of an element and a compound.
Allushta [10]

Answer:

The composition of air this is because it vmade up of oxygen, nitrogen, Nobel gages and Carbon dioxide

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N each reaction box, place the best reagent or reactant from the list below. reagents may be used more than once or not at all.
Ne4ueva [31]

Answer:

See explaination

Explanation:

See attachment for the drawing of the intermediate products b and c (both are neutral; omit byproducts).

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