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
HACTEHA [7]
3 years ago
14

What mass of Na2SO4 is needed to make 2.5L of 2.0 M solution?

Chemistry
1 answer:
Gala2k [10]3 years ago
5 0
Moles of Na2SO4 = conc. x volume(dm3)
= 2 x (2500cm3/1000)
= 5 mol


Mass of Na2SO4 = moles x molar mass
= 5 x ((23 x 2) + 32.1 + (16 x 4))
= 710.5g
You might be interested in
Question 19-20<br> I’m not really sure, can someone help me
Nesterboy [21]
Hi my name is Jaleesa The answer = -1
6 0
3 years ago
I need some help with this. I’m so confused on what to do and an explanation to what the answer is and why would be ideal.
Anvisha [2.4K]

Answer:

who do I submit my questions to there is no submit or done sign I download this app for help not to waste my money and time. I need help with math please don't let us start off on the wrong foot

8 0
2 years ago
Classify the following as a type of potential energy or kinetic energy (use the letters K or P)
Zanzabum
K, P, K, K, P, K, K, P, K, P. If it is moving, it is kinetic, if it isn't, it's potential. the sugar one is a little tricky using that method though, because we generally consider this in terms of spacial movement, but sugar holds energy which is later released by your body to allow you to move.the chemical bonds have potential energy because they release energy when broken.
5 0
3 years ago
Read 2 more answers
The mass number of an atom is equal to which of the following?
Phantasy [73]
Mass number is equal to the number of protons plus the number of neutrons in a nucleus of an atom
4 0
3 years ago
6. What will happen to the gravitational force between stars as the universe continues to expand?
Julli [10]
<h2><em>Nothing will happen to them</em></h2>

<em></em>

please mark brainliest

8 0
3 years ago
Other questions:
  • 3. How does a carbon-14 atom change back into a nitrogen atom?
    11·2 answers
  • Some plant seeds are adapted to develop only at extremely high temperatures. For what environmental change are
    9·2 answers
  • Describe what happens to water particles when ice melts
    6·1 answer
  • In ocean water, salt is a(n) _____.<br><br> a. solution<br> b. alloy<br> c. solvent<br> d. solute
    7·2 answers
  • A student adds 4.00g of dry ice (solid CO2) to an empty balloon. What will be the volume of the balloon at STP after all the dry
    15·1 answer
  • 2. What is an example of a molecule<br> with different types of atoms?
    7·1 answer
  • 2 . a) b) (1) List three oxides of nitrogen ( 3ks) State Charles law (2mks) (111) A given mass of gas occupies 300cm at 900mmHg
    13·1 answer
  • Speed.
    15·1 answer
  • Which two of these are also pure substances? Silicon <br>Brass <br>Gold <br>Steel <br>Rubber​
    12·2 answers
  • If Log 4 (x) = 12, then log 2 (x / 4) is equal to
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!