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IrinaVladis [17]
3 years ago
13

What is the molarity of a 300.0 mL solution containing 25.0 g of NaCl?

Chemistry
1 answer:
Aleks04 [339]3 years ago
8 0

Answer:

1,43 M

Explanation:

molair mass NaCl = 58,44 g/mol

You need to calculate how many moles 25 g is:

25 g / 58,44 g/mol = 0,4278 mol

0,4278 mol / 0,3 L = 1,43 M

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Which of the following is made up only of one type of atom?
erastova [34]

Answer:

Table salt i might be wrong

3 0
3 years ago
Calculate the number of moles in 32.0 g of methane, CH4, to 3 significant figures.
andrew11 [14]

Answer:

2 moles

Explanation:

mass of ch4 is 16 g/mol

32g

32g/16 g/mol =

32/16 =

2

6 0
3 years ago
Read 2 more answers
The reaction below will occur in a gaseous system at STP:
WARRIOR [948]

Answer:

V = 12.5 L

Explanation:

Given data:

Volume of NO = 15.0 L

Temperature and pressure = standard

Volume of nitrogen gas produced = ?

Solution:

Chemical equation:

6NO + 4NH₃    →     5N₂ + 6 H₂O

Number of moles of NO:

PV = nRT

n = PV/RT

n = 1 atm × 15.0 L / 0.0821 atm.L /mol.K × 273.15 K

n = 15.0 atm.L / 22.43 atm.L /mol

n = 0.67 mol

now we will compare the moles of No and nitrogen gas.

              NO           :         N₂

               6             :          5

              0.67         :         5/6×0.67 = 0.56

Volume of nitrogen gas:

 PV = nRT

1 atm × V = 0.56 mol ×  0.0821 atm.L /mol.K × 273.15 K

V = 12.5 atm.L / 1 atm

V = 12.5 L

4 0
3 years ago
What is the IUPAC name of KNO3, Fe(OH)3, H2SO3 and Al2(SO4)3<br>​
IrinaK [193]

Answer:

KNO₃ - Potassium nitrate

Fe(OH)₃ - Iron(III) hydroxide

H₂SO3 - Sulfurous acid

Al₂(SO₄)₃ - Aluminum sulfate

Hope that helps.

8 0
3 years ago
Read 2 more answers
How to round 0.000763 21cg
Alex_Xolod [135]
0.000763 cg! You're welcome, and I hope this helped you
6 0
3 years ago
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