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vladimir2022 [97]
3 years ago
11

What is the mass, in grams, of 1.4 mol W

Chemistry
1 answer:
algol [13]3 years ago
3 0
Atomic mass W = 183.84 u.m.a

1 mole --------- 183.84
1.4 moles ---- ?

1.4 x 183.84 / 1 = 257.376 g

hope this helps!
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A chef is cooking with a 2000-gram stainless steel skillet. Stainless steel has a specific heat capacity of 0.450 J/(g *oC). How
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How many moles of N2 are need to fill a 35 L tank at standard temperature and pressure?
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1.56 moles of N2 are needed to fill a 35 L tank at standard temperature and pressure. Details about moles can be found below.

<h3>How to calculate number of moles?</h3>

The number of moles of a substance can be calculated using the following formula:

PV = nRT

Where;

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  • V = volume
  • n = number of moles
  • R = gas law constant
  • T = temperature

At STP;

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  • P = 1 atm
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1 × 35 = n × 0.0821 × 273

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n = 35/22.41

n = 1.56mol

Therefore, 1.56 moles of N2 are needed to fill a 35 L tank at standard temperature and pressure.

Learn more about number of moles at: brainly.com/question/14919968

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