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TEA [102]
3 years ago
10

Which of the atoms shown has an atomic number of 4?

Chemistry
1 answer:
spin [16.1K]3 years ago
8 0

Answer:

B. Be

Explanation:

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What will be the volume occupied by 2.5 moles of nitrogen gas exerting 1.75 atm of pressure at 475K?
Marina86 [1]

Answer:

THE VOLUME OF THE NITROGEN GAS AT 2.5  MOLES , 1.75 ATM AND 475 K IS 55.64 L

Explanation:

Using the ideal gas equation

PV = nRT

P = 1.75 atm

n = 2.5 moles

T = 475 K

R = 0.082 L atm/mol K

V = unknown

Substituting the variables into the equation we have:

V = nRT / P

V = 2.5 * 0.082 * 475 / 1.75

V = 97.375 / 1.75

V = 55.64 L

The volume of the 2.5 moles of nitrogen gas exerted by 1.75 atm at 475 K is 55.64 L

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3 years ago
Someone help me , quick​
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When you ride a bicycle, several things happen that require energy and it's transformation. You pedaling the bike is transforming chemical energy, supplied by the breakdown of the food you eat, into mechanical energy to turn the pedals. The chemical energy is potential and the mechanical energy is kinetic.

4 0
3 years ago
Please help
Alika [10]

Answer:

there is no question to answer :(

4 0
2 years ago
The name given to the main group elements in group 2 is _______.
navik [9.2K]

Answer:

Alkaline Earth Metals

3 0
2 years ago
If a beaker of water and a beaker of acetic acid are at the same elevated temperature, which will cool more quickly to room temp
WINSTONCH [101]
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