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Sonja [21]
3 years ago
10

How can melting point and boiling point identify a substance

Chemistry
1 answer:
Nikolay [14]3 years ago
8 0

Answer:

to determine of it is a solid liquid or gas.

Explanation:

The melting point is the temperature at which a substance converts from a solid state to a liquid state.

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What is the mass of phosphorus that contains twice the number of atoms found in 14
yulyashka [42]

Answer:

15.5 gm

Explanation:

What is the mass of phosphorus that contains twice the number of atoms found in 14 g of iron?

[Relative atomic mass : P = 31; Fe = 56]

14 gm Fe = 14gm/ 56 gm/mole = 14 mole gm/56gm = 14/56 mole

0.25 moles

2 X 0.25 = 0.5 moles

1 mole P = 31 gm

so

0.5 moles P =31/2 =15.5 gm

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3 years ago
Which of these factors should remain constant in a simulation of natural
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A is your answer The ratio of females to males
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How many moles of oxygen are necessary to react completely with four moles of propane (CH)?
steposvetlana [31]

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20 mole of oxygen

Explanation:

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3 years ago
When the number of protons and electrons are the same the atom is
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A.)Neutral. Since amount of protons and electron are equal and amount of protons cannot be changed so it is stable or neutral.

5 0
3 years ago
Read 2 more answers
Determine the total number of atoms contain in a 2.00 moles of Ni
spayn [35]

Answer:

2.00 moles of Ni has 1.2 *10^24 atoms

Explanation:

Step 1: Data given

Number of moles Ni = 2.00 moles

Number of Avogadro = 6.022*10^23 /mol

Step 2: Calculate number of atoms

Number of particles (=atoms) = Number of Avogadro *  number of moles

Number of atoms = 6.022 * 10^23 /mol * 2.00 moles

Number of atoms = 1.2*10^24 atoms

2.00 moles of Ni has 1.2 *10^24 atoms

4 0
3 years ago
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