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
malfutka [58]
3 years ago
13

40 g of CaCO3 is how many moles of CaCO3? 10 moles 0.4 moles 40 moles 100 moles

Chemistry
1 answer:
AleksandrR [38]3 years ago
8 0

Answer:

0.4 moles

Explanation:

To convert between moles and grams you need the molar mass of the compound. The molar mass of of CaCO3 is 100.09g/mol. You use that as the unit converter.

40gCaCO3* 1mol CaCO3/100.09gCaCO3 = 0.399640 mol CaCO3

This rounds to 0.4 moles CaCO3

You might be interested in
How many unpaired electrons are present in a ground-state atom from each of the following groups?
musickatia [10]

For 7A(17) :

Electronic configuration ns^2 np^5

So, there are 5 unpaired electrons present in group 7A(17).

<h3>What are Unpaired Electrons?</h3>
  • An unpaired electron is an electron that doesn't form part of an electron pair when it occupies an atom's orbital in chemistry.
  • Each of an atom's three atomic orbitals, designated by the quantum numbers n, l, and m, has the capacity to hold a pair of two electrons with opposing spins.
  • Unpaired electrons are extremely uncommon in chemistry because an object carrying an unpaired electron is typically quite reactive. This is because the production of electron pairs, whether in the form of a chemical bond or as a lone pair, is frequently energetically advantageous.
  • They play a crucial role in describing reaction pathways even though they normally only appear momentarily during a reaction on a thing called a radical in organic chemistry.

To learn more about unpaired electrons with the given link

brainly.com/question/14356000

#SPJ4

6 0
2 years ago
How many atoms are found in the chemical formula below?*<br> Al2(SiO3)2
SCORPION-xisa [38]

Answer:

10 atoms

Explanation:

To find out the number of atoms: MULTIPLY all the SUBSCRIPTS in the molecule by the COEFFICIENT.

4 0
3 years ago
If an ion has 34 protons and 36 electrons, what is the charge on the ion
Dmitriy789 [7]

Answer:

negative but dont quote me on that

Explanation:

8 0
3 years ago
ILL GIVE BRAILNEST!!!!! PLZ HELP ME FAST
NemiM [27]
Multiple states of matter - mixture
Same state of matter - pure
Separated physically- mixture
Consistent properties - pure
Can’t be separated- pure
Can’t be a single element - mixture
3 0
3 years ago
0 Balance the following equation: CO2 (g) + H2O (1) → C12H24012 (s) + O2 (g) +​
Drupady [299]

Explanation:

Answer: 12CO2(g) +12H2O(l)->C12H24O12(s)+12O2(g)

Once you make balancing equations don't disturb the given numbers because it is fix you need to solve by the side of the chemical name.

5 0
3 years ago
Other questions:
  • Write a balanced chemical equation for each of the following.
    5·2 answers
  • Calculate number of grams in 1.15*10^21 molecules of P2O5
    15·1 answer
  • A student conducts an experiment to determine the effect of adding salt on the boiling temperature of water. The results are sho
    10·2 answers
  • How do you determine the percent yield of a chemical reaction?
    8·1 answer
  • What is Hess‘s law please help
    7·1 answer
  • Help me please
    12·1 answer
  • What are cilia?<br><br> smooth covering<br> hair like structures<br> a tail<br> all of the above
    14·1 answer
  • 4. How is the coordination number determined?
    8·1 answer
  • How many atoms of each element are in NaCI?
    12·1 answer
  • What does food provide to organisms?<br><br> A-homeostasis<br> B-shelter<br> C-energy<br> D-air
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!