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Pie
4 years ago
8

Help If U Know This.....Please

Chemistry
1 answer:
skad [1K]4 years ago
6 0
Question 5)

1 Hour: 100g
40 Minutes: 50g
20 Minutes: 25g
0 Minutes: 12.5g

Question 6)

160 Days: 80ou
120 Days: 40ou
80 Days: 20ou
40 Days: 10ou
0 Days: 5ou

Every period of time, the radioactive isotopes halve in numbers as they emit radiation.

I think you now know the gist. Try doing the rest yourself.

Good luck.
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A mixture of nitrogen gas and oxygen gas has a total pressure of 123.5 kPa. If the
ASHA 777 [7]

Answer: 19kpa

Explanation:

The total pressure of a mixture of gases is the sum of the partial pressure exacted by the individual gases.

P total = P X + P Y

From the question above:

P total = P .nitrogen + P. oxygen

123.5kpa = 104.5kpa + P. Oxygen

P. Oxygen = 123.5kpa - 104.5kpa

= 19kpa

6 0
4 years ago
Which statement describes a reaction at 298 K if AH = 31 kJ/mol, AS = 0.093
melisa1 [442]

Answer: (D) it is not spontaneous.

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3 years ago
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what is the following???

a qualitative observation is when somehthings appearance changes like form red to blue, and qualitative is when the umber of something changes.

Hope this helps

Kenny

4 0
3 years ago
What makes each type of atom different?
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Electron arrangements is the most important and then the number of neutrons and protons !!!!
8 0
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uysha [10]
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