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shusha [124]
3 years ago
6

Which element, Phosphorus or Calcium, is more reactive? Why?

Chemistry
1 answer:
Elza [17]3 years ago
5 0

Answer:

phosphorus is more reactive than calcium

Explanation:

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A container holds 6.4 moles of gas. Hydrogen gas makes up 25% of the total moles in the container. If the total pressure is 1.24
Degger [83]
  The   partial  pressure of hydrogen is 0.31  atm

calculation

find the number of  hydrogen   moles the container, that is

25/100  x 6.4  =1.6 moles of hydrogen

find the  partial pressure for hydrogen  in 1.6 moles

that is   6.4  moles=  1.24 atm
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by  cross  multiplication

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Geologists may choose to lick a mineral to identify it. What mineral is the geologist expecting with this test?
Archy [21]
<span>NaCl (halite) or KCl (sylvite) </span>
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Which of these statement(s) is/are true about a balloon filled with 1.00 mol N2 (g) at STP?
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Answer:

I. The balloon has a volume of 22.4L

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Explanation:

At stp, it has been proven that 1mole of a gas occupy 22.4L.

Therefore, option (i) is correct.

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Number of mole of N2 = 1 mole

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Mass = mole x molar Mass

Mass of N2 = 1 x 28.02 = 28.02g.

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From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02x10^23 molecules. This implies that 1 mole of N2 also contains 6.02x10^23 molecules

Therefore, option (iii) is correct.

The correct options to the question are:

Option i and option iii

7 0
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Nagine you are repeatedly lifting a weight into the air up to a height of 2 m. Assuming in each litt
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Answer:

A

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