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Ilia_Sergeevich [38]
4 years ago
8

How does the human body keep warm on a cold day?

Chemistry
1 answer:
Margarita [4]4 years ago
7 0
By wearing thick clothes, near in a furnace or something that is warm
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Please help me get the answer to bothe a and b​
neonofarm [45]

Answer:

If a metal and metal solution react, the more reactive metal will displace the less reactive metal from solution. If the metal in solution you start with is formed from a more reactive metal than the metal to be added, no reaction will occur.

3 0
2 years ago
If 9.2 g of calcium react completely with excess aluminum chloride how many grams of aluminum would be produced?
Gekata [30.6K]

Explanation:

3Ca(s) + 2AlCl3(aq) -> 3CaCl2(aq) + 2Al(s)

According to the question, Ca is the limiting reactant.

Therefore, we equate Ca to Aluminium which is the product whose mass we want to find

Molar mass of Ca- 40g/mol

". ". of Al- 27g/mol

3Ca --> 2Al

3×40 --> 2×27

9.2 --> x

x = 9.2×2×27= 496.8÷120=4.14

8 0
3 years ago
Which defines the average kinetic energy of a system’s particles? density pressure temperature volume
Igoryamba

Answer:

Temperature

Explanation:

The kinetic energy is proportional to the temperature. That is, temperature is a measure of the kinetic energy of atoms and molecules that are part of a system.

This can be explained by kinetic theory.

4 0
3 years ago
Read 2 more answers
How do machines transfer and convert energy
ella [17]
<span>Energy transformation or energy conversion is the process of changing one form of energy to another. In physics, the term energy describes the capacity to produce certain changes within a system, without regards to limitations in transformation imposed.</span><span>
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7 0
4 years ago
3.00 moles of gas are pumped into a 1.00L rigid container with a pressure of 1.98 atm. The gas is released from the container un
guajiro [1.7K]

Answer:

1.18 moles of gas

Explanation:

3.00 moles of gas are pumped into a 1.00L rigid container with a pressure of 1.98 atm. The gas is released from the container until the pressure is 0.78 atm, how many moles of gas remain in the container?​

for the sealed rigid container, the pressure is directly proportional to the amount of gas

3.00moles/1.98  atm =  ? moles/0.78 atm

? = 3.00 X 0.78/1.98  =1.18 moles of gas

8 0
3 years ago
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