1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
RSB [31]
3 years ago
13

14.2 grams of Na2SO4 is dissolved in water to make a 2.50 L

Chemistry
1 answer:
Trava [24]3 years ago
6 0

Answer:

0.04 M

Explanation:

Given data:

Mass of Na₂SO₄= 14.2 g

Volume of solution = 2.50 L

Molarity of solution = ?

Solution:

Number of moles of Na₂SO₄:

Number of moles = mass/ molar mass

Number of moles = 14.2 g/ 142.04 g/mol

Number of moles = 0.1 mol

Molarity :

Molarity = number of moles of solute / volume of solution in L

Molarity = 0.1 mol / 2.50 L

Molarity = 0.04 M

You might be interested in
HELPP ME !!!! DUE NOW!!!!!!
Deffense [45]

Answer:

the answer is

a

b

d

c

Explanation:

hopeit help

8 0
3 years ago
Read 2 more answers
Can someone help your amiga :(??
bekas [8.4K]

i think the answer is C but don't take my word for it

4 0
3 years ago
Suppose you need to prepare 136.9 mL of a 0.315 M aqueous solution of NaCl.
Varvara68 [4.7K]

Answer:

2.52 g NaCl

Explanation:

(Step 1)

To find the mass, you first need to find the moles NaCl. This value can be found using the molarity ratio:

Molarity = moles / volume (L)

After you convert mL to L, you can plug the given values into the equation and simplify to find moles.

136.9 mL / 1,000 = 0.1369 L

Molarity = moles / volume

0.315 M = moles / 0.1369 L

0.0431 = moles

(Step 2)

Now, you can use the molar mass to convert moles to grams.

Molar Mass (NaCl): 22.990 g/mol + 35.453 g/mol

Molar Mass (NaCl): 58.443 g/mol

0.0431 moles NaCl           58.443 g
------------------------------  x  -------------------  =  2.52 g NaCl
                                            1 mole

4 0
2 years ago
____ 30. isotopes are atoms of the same element that
finlep [7]
Isotopes are atoms of the same element that<span> has different masses.</span>
4 0
3 years ago
What is acid according to arhenias concept?
nignag [31]

Answer:

Acid are those substances which release H + ions when dissolved in water.

Get that hundooo!

7 0
3 years ago
Other questions:
  • Name two drying agents that can be use to dry hydrogen gas​
    5·1 answer
  • Why should hypothesis be testable?
    15·2 answers
  • Which statements are scientific statements
    9·1 answer
  • Why NH4 is not a molecular ion
    10·1 answer
  • Which of the following large-scale environmental catastrophes has the least effect on aquatic ecosystems?
    6·2 answers
  • What do valence electrons determine about an element?
    5·1 answer
  • B. What three products are necessary in order for a hydrocarbon combustion reaction to take place?
    13·1 answer
  • Incomplete Lewis structures for the nitrous acid molecule, HNO2, and the nitrite ion, NO2-, are shown here. (a) Complete each Le
    7·1 answer
  • The reaction responsible for producing the heat that maintains the temperature of your body is
    14·1 answer
  • Abbey always gets zits on her chin and she can't figure out
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!