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postnew [5]
3 years ago
12

The density of an object is 7 g/mL and has a volume of 2mL, what is the mass of the object?

Chemistry
1 answer:
vladimir2022 [97]3 years ago
3 0

Answer:

Its 14

Explanation:

times 7 n 2 or u can add 7 n 2 and u get 9

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A cylinder of argon gas contains 50.0 L or Ar at 18.4 atm and 'C. How many moles of argon are in the cylinder?
makkiz [27]

<em>A cylinder of argon gas contains 50.0 L of  Ar  at 18.4 atm and 127 °C. How many moles of argon are in the cylinder?</em>

<em />

Number moles of Argon : 28.03

<h3>Further explanation</h3>

Given

The volume of gas=50 L

P = 18.4 atm

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Required

moles of Argon

Solution

Use ideal gas Law :

\tt n=\dfrac{PV}{RT}\\\\n=\dfrac{18.4\times 50}{0.08205\times 400}\\\\n=28.03

5 0
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If 7.50 g of the unknown compound contained 0.250 mol of c and 0.500 mol of h, how many moles of oxygen, o, were in the sample?
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Why is a phenol more acidic than a regular alcohol? Group of answer choices
Aleks [24]

Answer:

a.Phenols have the ability to spread out the negative charge that forms.

Explanation:

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