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
zavuch27 [327]
2 years ago
14

How many moles are there in 7.24 grams of calcium carbonate? With work shown

Chemistry
2 answers:
balu736 [363]2 years ago
8 0

Answer:

0.0723371390261859

slava [35]2 years ago
5 0
CaCO3 = 40 + 12 + 16*3 = 100 g/mol
Mol CaCO3 = m/M = 7.24/ 100 = 0.0724 mol
Can you mark it brainliest?
You might be interested in
Consider the reaction between reactants s and o2: 2s(s)+3o2(g)→2so3(g)if a reaction vessel initially contains 7 mols and 9 mol o
nadya68 [22]

Answer: -

1 mol

Explanation: -

Number of moles of Sulphur S = 7

Number of moles of O2 = 9

The balanced chemical equation for the reaction is

2S (s)+3 O2 (g)→2SO3(g)

From the above reaction we can see that

3 mol of O2 react with 2 mol of S

9 mol of O2 will react with \frac{2 mol S x 9 mol O2}{3 mol O2}

= 6 mol of S

Unreacted S = 7 - = 1 mol.

If a reaction vessel initially contains 7 mol S and 9 mol O2

1 mole of s will be in the reaction vessel once the reactants have reacted as much as possible

6 0
3 years ago
A block of metal has a mass of 0.0694 kg. It displaces 3.6 mL of water. What is it’s density in g/cm^3
Ivan

Answer:

19.28 g/cm^3 to the nearest hundredth.

Explanation:

The volume of water displaced = the volume of the metal.

density = mass / volume

0.0694 kg = 0.0694 * 1000

=  69.4 g.

Density = 69.4 / 3.6

= 19.28 g/cm^3.

4 0
3 years ago
Which factors cause earth to experience seasons? Check all that apply.
Nataly [62]

Answer:

the speed of the earth's rotation, the tilt of the earth's axis and the directness of the sun

4 0
3 years ago
Read 2 more answers
On number 2 if the atom has 3 protons,4 neutrons and 3 electrons what is the charge of the atoms nucleus?
laila [671]
0 is the correct answer.
7 0
3 years ago
Which phrase best defines a chemical bond?
Mice21 [21]

Answer:

Chemical bond can be define as a force holding atoms firmly together to a form molecules.

Explanation:

Chemical bond is a strong attraction between atoms, molecules or ions that enhance the formation of chemical compounds. The bonds may be due from the electrostatic force of attraction between opposite charged ions or through the sharing of electrons.

Types of chemical bond

There are four types of chemical bonds

- covalent bond

- polar bond

- ionic bond

- hydrogen bond

Ionic bond involves the transfer of an electron which involves one atom receiving and the other giving out

Covalent bond involves the sharing of electrons between two atoms

Polar bonds involves two atoms connected by covalent bonds which may exert different attractions for the electrons in the bond resulting into unevenly charges distribution

Hydrogen bond: this is found mostly in water H2O. They are polarized

3 0
3 years ago
Other questions:
  • The noble gases are located in which column of the periodic table?A. 1B. 6C. 9D. 18
    6·1 answer
  • If 25.8 grams of BaO dissolve in enough water to make a 212 gram solution, what is the percent by mass of the solution?
    11·2 answers
  • Use the term selectively permeable in a sentence
    9·1 answer
  • Atomic emission spectra are produced when the light emitted by an element passes through a prism. Which of the following stateme
    11·1 answer
  • You hold two magnets together, end to end, and then let go. If the magnets stay together, the magnets are being _____.
    10·2 answers
  • Room temperature is around 25°C. What is the<br> state of matter of bromine?
    9·1 answer
  • Raising 100 grams of water from 40 to 60 °c (the specific heat capacity of water is 1 cal/g) requires the addition of What? A) 1
    7·2 answers
  • Determine The Oxidation Number for
    13·1 answer
  • Determine if each compound shown is soluble or insoluble.
    10·1 answer
  • The waves energy runs through water molecules, but they do not move the water molecules in the direction of the waves. Lesson 2.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!