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
borishaifa [10]
2 years ago
11

A sample of calcium oxide (CaO) has a mass of 2.80 g. The molar mass of CaO is 56.08 g/mol. How many moles of CaO does this samp

le contain?
Chemistry
2 answers:
Molodets [167]2 years ago
4 0

Answer is "0.05 mol".

<em>Explanation;</em>

We can do calculation by using a simple formula as

n = m/M

Where, n is the number of moles of the substance (mol), m is the mass of the substance (g) and M is the molar mass of the substance (g/mol).

Here,

n = ?

m = 2.80 g

M = 56.08 g/mol

By substitution,

n = 2.80 g /56.08 g/mol

n = 0.0499 mol ≈ 0.05 mol

Stolb23 [73]2 years ago
3 0

Answer:

0.0499

Explanation:

You might be interested in
Which class of organic compounds contains nitrogen?
Westkost [7]
<span>(3) amina ........................</span>
6 0
2 years ago
How many moles of oxygen are present in 16 g of oxygen gas​
makkiz [27]
Hope this helps

Answer- 1 mole
4 0
2 years ago
Read 2 more answers
Why does a cake rise when you bake it? ♡
VARVARA [1.3K]

The reaction of baking soda or baking powder with the liquid in the batter: These ingredients react together and cause air bubbles to form. ... Heat of the oven: The heat of the oven can cause baking powder to react further and cause more air bubbles, and the heat also sets the structure of the cake.

5 0
3 years ago
Read 2 more answers
I am giving brainly to the fastest
Svetllana [295]
North Dakota and Michigan because it has to be 32 Farenhieht or less to snow
6 0
2 years ago
Read 2 more answers
What elements in the periodic table might combine with oxygen to form magnesium oxide?
Nonamiya [84]
<span> I would  guess that calcium (Ca), of all the group 2 elements, is most like magnesium (Mg), because it has the most similar size (atomic and ionic radii) to Mg. </span>
3 0
3 years ago
Other questions:
  • A theory should be able to explain the relevant data and lead to correct predictions.
    10·2 answers
  • Are changes in the state of matter (phase) considered physical or chemical changes? Why?
    15·1 answer
  • In what important way was Mendeleev’s Periodic Table different from the modern Periodic Table?
    7·1 answer
  • Basic Chem:
    15·1 answer
  • Does the reaction of a main-group metal oxide in water produce an acidic solution or a basic solution? Write a balanced equation
    10·1 answer
  • Calculate the molarity of 1.60L of a solution containing 1.55g of dissolved KBr
    10·1 answer
  • PLEASEEE HELP !!!!<br><br> what physical changes might happen in the aquaponic system
    15·1 answer
  • 4. What causes a partial lunar eclipse?​
    7·2 answers
  • Please select the word from the list that best fits the definition
    12·1 answer
  • A tool might be made of an alloy because the alloy _____.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!