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Ostrovityanka [42]
3 years ago
11

During exercise your body's blood pressure increases as it cool down the body's blood pressure slowly returns to its normal stat

e this is know as?
Chemistry
1 answer:
melamori03 [73]3 years ago
3 0
Ur lungs i hope u get it
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Which part of the atom is directly involved in chemical changes? A. the electron B. the energy levels C. the nucleus D. the char
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Give the number of significant figures indicated 78
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6 0
3 years ago
23) What is the volume of 2.454 x 1024 atoms of nitrogen gas at STP?
earnstyle [38]

Answer:

d) V =  91.3 L

Explanation:

Given data:

Volume of nitrogen = ?

Temperature = standard = 273.15 K

Pressure = standard = 1 atm

Number of atoms of nitrogen = 2.454×10²⁴ atoms

Solution:

First of all we will calculate the number of moles of nitrogen by using Avogadro number.

1 mole = 6.022×10²³ atoms

2.454×10²⁴ atoms × 1 mol / 6.022×10²³ atoms

0.407×10¹ mol

4.07 mol

Volume of nitrogen:

PV = nRT

1 atm × V = 4.07 mol ×0.0821 atm.L /mol.K ×273.15 K

V =  91.3 atm.L /1 atm

V =  91.3 L

3 0
3 years ago
What should I do if I have a friend who i talk to everyday and I like him but he doesn’t like me?
azamat

Answer:

you never know but manifestation never hurts.

5 0
3 years ago
Read 2 more answers
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