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Leno4ka [110]
3 years ago
11

Help i have no idea what i’m doing and i’m failing this class

Chemistry
1 answer:
m_a_m_a [10]3 years ago
8 0

Answer:

c

Explanation:

esuba is activation energy

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Remember that it takes 2 electrons to form a bond how many bonds does CIO 3 - have, the chlorate ion
ladessa [460]

Answer:

3 bonds

Explanation:

solve this by doing the lewis structure for CIO3

5 0
3 years ago
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A sample of 508.4 grams of copper completely reacted with oxygen to form 572.4 grams of a copper oxide product. how many grams o
Svet_ta [14]

According to law of conservation of mass, mass can neither be destroyed nor created in a chemical reaction. Thus, sum of masses of reactants must be equal to sum of masses of products in a reaction.

The chemical reaction is as follows:

2Cu+O_{2}\rightarrow 2CuO

Here, sum of masses of Cu and oxygen gas should be equal to CuO formed.

2m_{Cu}+m_{O_{2}}=2m_{CuO}

Thus, mass of oxygen will be:

m_{O_{2}}=2(572.4-508.4)g=128 g

This can be further proved as follows:

The balanced chemical reaction is as follows:

2Cu+O_{2}\rightarrow 2CuO

Here, 2 moles of Cu completely reacts with 1 mole of O_{2} to give 2 moles of CuO.

Thus, 1 mole of Cu reacts with 0.5 moles of O_{2} .

The mass of Cu is 508.4 and molar mass is 63.546 g/mol, number of moles can be calculated as follows:

n=\frac{m}{M}=\frac{508.4 g}{63.546 g/mol}=8 mol

Thus, number of moles of  O_{2} reacting will be:

n_{O_{2}}=8\times 0.5 mol=4 mol

Molar mass of oxygen molecule is 32 g/mol thus, mass can be calculated as follows:

m=n×M=4 mol×32 g/mol=128 g/mol

This satisfies the law of conservation of mass.


7 0
3 years ago
Plant A gets no fertilizer, plnt B-5mg/day, and plnt C-10mg/day. Which is the control group?
prisoha [69]

Answer:

Plant A

Explanation:

This is because Plant A is what you will compare to the other plants. Because it has no fertilizer is is the independent variable.

8 0
3 years ago
Describe what happened when sodium chloride (salt) was placed in water in the video What happens when stuff dissolves?"
Sonja [21]

Answer:

-

Explanation:

Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together. After the salt compounds are pulled apart, the sodium and chloride atoms are surrounded by water molecules, as this diagram shows. Once this happens, the salt is dissolved, resulting in a homogeneous solution.

6 0
2 years ago
Name the following alkene:<br> CH3CH2CH2CH2CH = CH2
Alexandra [31]

Answer:

1-hexene. is your answer.

3 0
3 years ago
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