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Simora [160]
3 years ago
14

How to ditermin somthings volume?

Chemistry
1 answer:
densk [106]3 years ago
3 0
First of all, you have to find out it's dimensions. If it contains straight lines, then length of it, if it contains rounds, then radius etc......then by using appropriate equations, you can find out its volume..........
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Does a displacement reaction take place in 'magnesium + lead nitrate'? and if so why?
cestrela7 [59]

Answer:

Maybe or maybe not (not sure)

Explanation:

A displacement reaction is a type of reaction where one element is displaced by another from a compound.

In the case of magnesium and lead nitrate, magnesium is more reactive than lead. Therefore, it will displace lead from lead nitrate to form magnesium nitrate and lead.

The reaction can be represented as:

Mg(s) + Pb(NO3)2(aq) → Mg(NO3)2(aq) + Pb(s)


Another answer could be;

A displacement reaction does not take place in 'magnesium + lead nitrate' because magnesium is more reactive than lead.

5 0
2 years ago
Calculate the percentage mass of hydrogen in hydrochloric acid, HCI​
PIT_PIT [208]

Answer:

To find the mass percent of hydrogen in hydrogen chloride, we must divide the weight of the hydrogen atom alone by the weight of the entire molecule. Then we multiply by 100% to find the percentage. Thus, 2.77% of the mass of hydrogen chloride is hydrogen.

Explanation:

i hope you understand better

4 0
3 years ago
Which veriable should he change, measure and control (temp of water, volume of water and mass of sodium chloride that dissolve )
erma4kov [3.2K]
I would say
change: Temp
Measure: Mass
Control: Volume
7 0
3 years ago
Which of the following would have the best thermal insulation properties?
marishachu [46]

Answer:

D. A plastic cup

4 0
2 years ago
Which of the following is true about chlorofluorocarbons Group of answer choices a. they are now the dominant gas in the stratos
Gnom [1K]

Answer:

Option (D)

Explanation:

Chlorofluorocarbon is referred to as one of the important greenhouse gas, that is responsible for the depletion of the ozone layer. It was earlier extensively used in the refrigerators, but are later observed that as the CFC molecules are disintegrated in the atmosphere, it gives rise to the elimination of chlorine atoms that destroy the ozone layer, allowing the ultraviolet radiations to enter the earth's atmosphere. So, the use of CFCs has been banned globally by international treaties.

This gas is long-lasting, and remains in the atmosphere for about 20 to 100 years, is not that effective to human bodies, and present in the stratosphere in a very small amount.

Thus, the correct answer is option (D).

6 0
3 years ago
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