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
Ann [662]
3 years ago
15

A 36.41-g sample of calcium carbonate (CaC O 3 )

Chemistry
1 answer:
Lunna [17]3 years ago
7 0
M(O) = m(CaCO₃) - m(Ca) - m(C).
m(O) = 36.41 g - 14.58 g - 4.36 g.
m(O) = 17.47 g.
ω(Ca) = m(Ca) ÷ m(CaCO₃) · 100%.
ω(Ca) = 14.58 g ÷ 36.41 g · 100%.
ω(Ca) = 40 %; mass percent of calcium.
ω(C) = m(C) ÷ m(CaCO₃) · 100%.
ω(C) = 4.36 g ÷ 36.41 g · 100%
ω(C) = 12%; mass percent of carbon.
ω(O) = 100% - ω(Ca) - ω(C).
ω(O) = 100% - 40% - 12%.
ω(O) = 48%; mass percent of oxygen.
You might be interested in
I typed a question. It said give points. I selected. Someone answered notification came. But where do I see they persons answer?
Ksivusya [100]

Answer:

212.304 grams

Explanation:

similar to your other question, use the same formula

q=mCpΔT

23617=m(4.182)(46.6-20)

23617=111.2412m

m=212.304g

6 0
2 years ago
A substance that loses electron and itself is oxidized is called a?​
Verdich [7]

Answer:

oxidation-reduction or redox reaction

Explanation:

n

8 0
3 years ago
Read 2 more answers
A solution has a [OH-] of 1 × 10-9. What is the pOH of this solution?
zhannawk [14.2K]
POH = - log [ OH⁻ ]

pOH = - log [ 1 x 10⁻⁹ ] 

pOH = 9

Answer C

hope this helps!
3 0
3 years ago
True or false: The Earth's rotation causes the winds to curve.
Rashid [163]

Answer:

true

Explanation:

3 0
2 years ago
What is the specific name for the rock formed when magma cools
Irina-Kira [14]
Igneous Rocks are formed from the cooling of magma or lava.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Given that the rate constant is 4.0×10−4 m−1 s−1 at 25.0 ∘c and that the rate constant is 2.6×10−3 m−1 s−1 at 42.4 ∘c, what is t
    11·1 answer
  • If element A has an ionic charge of +2 and element B has an ionic charge of -3, what will be the formula for the compound create
    7·1 answer
  • An excess of Ba(No3)2 reacts with 250ml of H2SO4 solution to give 0.55g of BaSo4.determine The concentration in moles per litre
    8·1 answer
  • In the past mining companies were not made responsible for the clean-up of any of
    9·1 answer
  • How many moles are equal to 1.3 x 10^24 atoms of aluminum?
    15·1 answer
  • Who here likes BTS :)
    12·2 answers
  • True or false water molecules are polymers
    9·2 answers
  • Which chemical equations show a precipitation reaction?
    5·2 answers
  • Assume the following is a neutral atom.
    12·1 answer
  • if you can’t already tell by the amount of questions i do not understand chemistry lol, giving brainliest
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!