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
sertanlavr [38]
3 years ago
12

A sample of magnesium oxide has a mass of 94.4 g. How many molecules

Chemistry
1 answer:
ella [17]3 years ago
7 0

Answer: 1.414x10^24 molecules in 94.4g MgO

Explanation: molar mass MgO 40.204

molecules in 40.204 g MgO = avogadro number

molecules in 94.4 g MgO = (94.4/40.204)*avogadro number

(94.4/40.204)*6.02214076*10^23 = 14.14x10^23

You might be interested in
Understanding the theory of plate tectonics can help people better understand Earth's movements. How can knowledge of plate tect
Anettt [7]
The knowledge of plate tectonics help people living in areas prone to earthquakes and volcanic eruptions can help by knowing the chances of the earthquake or volcanic eruption
4 0
3 years ago
What are the two processes of ocean to cloud?
IceJOKER [234]

Answer: The excess amount changes from a gas into a liquid or solid (ice). The process of water changing from a gas to a liquid is called "condensation," and when gas changes directly into a solid, it is called "deposition." These two processes are how clouds form.

4 0
3 years ago
Name two example of oxygenase
Nataly_w [17]
Air sksksks and I oop-
4 0
3 years ago
True or False: Your blood is a neutral solution.
MaRussiya [10]

Answer:

True

Explanation:

Neutral solutions maintain a pH of 7. Water and human blood are great examples of neutral solutions. Acids mixed with bases can be neutralized and given a pH of 7.

8 0
3 years ago
REALLY NEED HELP!!! Chemistry
kicyunya [14]

Answer:

C.) 2

Explanation:

The pH equation is:

pH = -log[H⁺]

In this equation, [H⁺] is the molarity of the acid. In this case, the acid is HCl. Molarity can be found using the equation:

Molarity (M) = moles / volume (L)

Since you were given moles and volume, you can find the molarity of HCl.

Molarity = moles / volume

Molarity = 0.01 moles / 1.00 L

Molarity = 0.01 M

Now, you can plug the molarity of the acid into the pH equation.

pH = -log[H⁺]

pH = -log[0.01]

pH = 2

3 0
2 years ago
Other questions:
  • What is the total mass of a mixture of 3.50x10^22 formula units na2so4, 0.500 mol h2o, and 7.23 g agcl?
    15·1 answer
  • From t = 0.0 s to t = 4.0 s, what distance does the particle move?
    14·1 answer
  • What affect would a warm body of water have on the coastline?
    7·1 answer
  • What is a binary acid?
    14·1 answer
  • Select the correct answer.
    8·2 answers
  • What 3 atoms have 16 protons
    11·1 answer
  • The force exerted by air on a moving object is called
    14·2 answers
  • Please help me please
    10·1 answer
  • How many moles are in 3.27 x 1027 atoms of carbon (C)? ​
    7·1 answer
  • HELP ME PLEASE!!!!! I NEED TO GET THIS RIGHT I CANT FAIL
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!