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
Latoya performs an experiment using the lab equipment shown. Which two properties is Latoya most likely measuring?
spayn [35]

Answer: Volume and temperature

Explanation:

5 0
3 years ago
Read 2 more answers
Traveling at the speed of light - how long would it take, in years, to reach the top of the pile of balls? Show all calculations
marusya05 [52]

The time taken for the object to reach to top of pile is 0.012 year.

<h3>Time of motion </h3>

The time taken for the object to reach to top of pile is calculated as follows;

time of motion = distance traveled/speed

time of motion = (1.1 x 10¹⁴ x 10³ m)/(3 x 10⁸ m/s)

where;

  • speed of light = 3 x 10⁸ m/s

time of motion = 3.67 x 10⁵ sec = 0.012 year

Thus, the time taken for the object to reach to top of pile is 0.012 year.

Learn more about time of motion here: brainly.com/question/2364404

#SPJ1

7 0
2 years ago
1. What is the equality between mL and L?
Mice21 [21]

Answer:

1 liter (L) = 1000 milliliters (mL)

Explanation:

5 0
3 years ago
in which of the following is the symbol for the ion and the number of electrons it contains given correctly? *
gregori [183]

Answer:Number of electrons that are present in an atom is determined by the electronic configuration of that atom.

If an ion is carrying a positive charge, it means that the atom has lost electrons and if an ion is carrying a negative charge, it means that the atom has gained electrons.

For the given options:

Option A: The atomic number of hydrogen atom is 1 and the electronic configuration for  ion will be:  

Thus, this atom does not have any electrons.

Option B: The atomic number of bromine atom is 35 and the electronic configuration for  ion will be:  

Thus, this atom has 36 electrons.

Option C: The atomic number of aluminium atom is 13 and the electronic configuration for  ion will be:

Explanation:

3 0
3 years ago
Which sentence from A Girl from Yamhill best illustrates the author's use of sensory language? (A) I was not afraid and did not
oksano4ka [1.4K]

Answer:

D

Explanation:

This sentence has the most sensory details or details giving more description of the 5 senses.

Hope this helps :)

6 0
3 years ago
Read 2 more answers
Other questions:
  • How do you determine the possible quantum numbers for an atom?
    9·1 answer
  • What is the colour of feso4.7h2o crystals
    15·1 answer
  • The Bohr model of an atom shows a nucleus with electrons circling around it. What does the Bohr model show that makes it a usefu
    11·1 answer
  • The Ka1 value for oxalic acid is 5.9 x10-2 , and the Ka2 value is 4.6 x 10-5 . What are the values of Kb1 and Kb2 of the oxalate
    10·1 answer
  • Help with all of these please!
    12·1 answer
  • What are rules of brainly?
    12·2 answers
  • PLEASE HELP I WILL MARK YOU BRAINLIEST How many moles of FeCl2 do you need to react 5 moles of Cl2?
    12·1 answer
  • What are the physical and chemical properties of iron oxide
    10·1 answer
  • What is the molality of a solution of naphthalene dissolved in chloroform if the solution has a freezing point of -64.7 °C? ​
    12·1 answer
  • Which element has the largest atomic radius ? Ga, Al, or Si
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!