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AysviL [449]
2 years ago
10

USING THE ELECTRON DOT DIAGRAM HOW MANY ELECTRONS DOES IT TAKE TO FILL UP THE SECOND SHELL OF AN ATOM?

Chemistry
1 answer:
adell [148]2 years ago
4 0

Answer:

8

shell 1 =2

shell 2 =8

shell 3 =8

shell 4 =2

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How many liters of a 0.30M solution are needed to give 2.7 moles of solute? Your answer:
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You HAVE TO know that molarity (M) tells you the number of moles of a solute per Liters of solution.
M=mol/L
0.3M = 2.7 mol/ Volume
Volume = 2.7 mol/3.0 L
Volume = 0.9 L
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4 0
3 years ago
A sample of gas (1.9 mol) is in a flask at 21 °c and 697 mm hg. the flask is opened and more gas is added to the flask. the new
garik1379 [7]

To solve this problem, we assume ideal gas so that we can use the formula:

PV = nRT

since the volume of the flask is constant and R is universal gas constant, so we can say:

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3 years ago
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