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
Otrada [13]
3 years ago
8

What is the mass of 4.40 moles of magnesium chloride, MgCl2?

Chemistry
1 answer:
Darya [45]3 years ago
3 0
Since the number of moles of a substance is the mass divided by the molar mass of the substance, we can just simply multiply the molar mass of magnesium chloride by the number of moles, which is 4.40 in this case.

To find the molar mass, refer to the periodic table for the relative atomic mass of Mg and Cl and add them together. Since there’s 2 chloride ions in MgCl2, double the relative atomic mass of Cl when adding.

24.31 + 35.45x2
=95.21

Now just multiply 95.21 to 4.40mol, which you’ll get 418.9g (corrected to 3 significant figures)
You might be interested in
What does a scientist observe in a chemical's reaction rate?
defon

The scientist observes at what rate is the concentration increasing or decreasing.

7 0
3 years ago
Read 2 more answers
As you were climbing a a mountain, you noticed that rocks were crumbling below your feet and moving down the mountain. What two
Flauer [41]

Answer:

Weathering and erosion

Explanation:

Weathering can be explained as the breaking down of rocks/minerals on the surface of the Earth as a result of contact with biological organism, water, air and other factors

. There are 3 common types of weathering which are;

1) physical weathering

2) biological weathering

3) chemical weathering

Erosion can be regarded as a geological process, whereby earthen material are been transported away by natural forces, these forces could be wind as well as water.

Therefore, as you were climbing a a mountain, you noticed that rocks were crumbling below your feet and moving down the mountain. What is observed are weathering and erosion processes.

After the weakening and broken up of the rock by weathering then erosion transport the bit of the rock down the mountain as you are climbing, which means the "weathering process" breakdown and the "erosion process" involves the transport or movement of the bit of the rocks

6 0
3 years ago
Why does temperature change always move from regions of hot to regions of cold?
Nadya [2.5K]

Answer:

earth surface is uneven because land heats faster than water causes air to warm.,expand and rise over land while it cools and sinks over the cooler waters surface..

8 0
3 years ago
Which of the following represents the relative charge of proton
Snowcat [4.5K]
You’ve not put anything below so I’m not sure what the options are but the relative charge of a proton is +1
8 0
2 years ago
If you breathe fast, CO2 is If you breathe fast, C O 2 is blank and the equilibrium shifts to blank [ H 3 O + ], which raises th
brilliants [131]

Answer:

If You Breathe Fast, CO2 Is Blank The Equilibrium Shifts To Blank [H3O+], Which Raises The PH.

Explanation:

3 0
2 years ago
Other questions:
  • A scientist measures the standard enthalpy change for the following reaction to be -327.2 kJ : P4O10(s) 6 H2O(l)4H3PO4(aq) Based
    15·1 answer
  • What is the pH of a 5.4 x 10-3 M HCl solution?<br>A. 2.3<br>B. 3.3<br>C. 3.7<br>D. 11.7​
    8·1 answer
  • How many grams of sodium chloride are present in a 0.75 M solution with a volume of 500.0 milliliters?
    5·1 answer
  • Which conclusion is best supported by the information?
    5·2 answers
  • a concentration solution of H2so4 is 59.4% by mass (m/m) and has a density of 1.83 g/mL. How many mL of the solution would be re
    14·1 answer
  • Sodium metal reacts with water to produce hydrogen gas.
    13·2 answers
  • The physician has ordered 1.0 g of tetracycline to be given every six hours to a patient . If your stock on hand is 500 mg table
    14·2 answers
  • 1 or 2 topics or two lessons should be explained in an illustrated childrens book minimum of 10 pages must have 3 or more senten
    5·1 answer
  • What are the chemical properties of iron meta
    9·1 answer
  • 11. What is deceleration also called?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!