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Harlamova29_29 [7]
3 years ago
15

How many moles are in 5.34 x 10*21 particles of Nitrogen?

Chemistry
1 answer:
Mariulka [41]3 years ago
4 0
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Convert 0.900 atm of pressure to its equivalent in millimeters of mercury. express the pressure numerically in millimeters of me
Angelina_Jolie [31]
1 atm = 760 mm Hg

Where 760 mm is the height of Mercury for 1 atm.

For 0.900 atm,

Height of mercury = 0.900*760 = 684 mm Hg
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When the equation __H2O2 --> __H2O + __O2 Is completely balanced, the sum of all the coefficients will be A) 5 B) 8 C) 3 D) 4
kkurt [141]

Answer:

A)5

Explanation:

2H2O2 --> 2H2O + 1O2

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Radium decays to form radon. 226 88 ra → 222 86 rn 4 2 he this type of nuclear decay is called .
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alpha decay

Explanation:

4 0
2 years ago
A mylar balloon is filled with helium gas to a pressure of 107 kPa when the temperature is 22°C. If the temperature changes to 4
brilliants [131]

Answer:

Explanation:

To solve this problem, we have to remember the ideal gas theory. We going to use the Gay Lussac Law.

The equation is:

PiTo = PoTi

Where:

<em>Pi =initial pressure</em>

<em>Po = final pressure</em>

<em>Ti = initial temperature</em>

<em>To = final temperature</em>

Let's use this equation and replace the values:

<em>Pi = 107 kPa</em>

<em>Ti = 22°C</em>

<em>To = 45 °C </em>

<em>Po = ? </em>

<em />

You can use the units as the problem gave you.

Using the Gay Lussac law:

107 kPa x 45 °C = Po x 22°C

Po = (4,815 kPa°C / 22°C) = 218.86 kPa

Po = 218 kPa

5 0
3 years ago
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