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
elena55 [62]
3 years ago
9

How many atoms are in the mole of magnesium

Chemistry
1 answer:
Pani-rosa [81]3 years ago
8 0

Answer:

6.02 × 10²³ atoms.

Explanation:

According to the Avogadro number, the one mole of any substance have 6.02 × 10²³ atoms.

The number 6.02 × 10²³ is called Avogadro number. it is the number of atoms, ions or molecules in one gram atoms of element, one gram ions of substance or one gram molecules of a compound.

For one mole of magnesium.

24.305 g of Mg = 1 mole of magnesium =  6.02 × 10²³ atoms of magnesium.

Other example includes:

18 g of water = one mole of water =  6.02 × 10²³ molecules of water.

23 g of sodium = one mole of sodium =  6.02 × 10²³ atoms of sodium.

You might be interested in
What happens to an atom if it loses an electron?
jolli1 [7]

Answer:

When an atom loses electron(s) it will lose some of its negative charge and so becomes positively charged. A positive ion is formed where an atom has more protons than electrons. In the opposite case when an atom gains electron(s) it becomes negatively charged (more electrons than protons).

Explanation:

7 0
3 years ago
The smallest unit of a compound is called a ___________.
Oxana [17]
<span>The smallest unit of a compound is called a molecule. The correct option among all the options that are given in the question is the second option or the penultimate option or option "B". The other choices are incorrrect and can be negated. I hope that this is the answer that has actually come to your desired help.</span>
5 0
3 years ago
Boron has primarily two isotopes, one with an atomic mass of 11.0 amu and another with an atomic mass of 10.0 amu. If the abunda
Masja [62]

Answer:

The atomic mass of the boron atom would be <em>10.135</em>

Explanation:

This is generally known as relative atomic mass.

Relative atomic mass or atomic weight is a physical quantity defined as the ratio of the average mass of atoms of a chemical element in a given sample to the atomic mass of 1/12 of the mass of a carbon-12 atom. Since both quantities in the ratio are masses, the resulting value is dimensionless; hence the value is said to be relative and does not have a unit.

<em>Note that the relative atomic mass of atoms is not always a whole number because of it being isotopic in nature.</em>

  • <em>Divide each abundance by 100 then multiply by atomic mass</em>
  • <em>Do that for each isotope, then add the two result. Thus</em>

Relative atomic mass of Boron = (18.5/100 x 11) + (81/100 x 10)

                                                 = 2.035 + 8.1

                                                 = 10.135

5 0
3 years ago
Which best explains why the game of economics does not have a single goal?
Gemiola [76]

Answer:  Different people want different things out of life

               Your Welcome ^_^            

3 0
3 years ago
Using the following equation: 3H2SO4+ 2Fe -&gt; Fe2(SO4)3+ 3H2
Mariana [72]

Answer:

H₂SO₄

Explanation:

Given data:

Number of moles of H₂SO₄ = 15 mol

Number of moles of Fe = 13 mol

Which reactant is limiting reactant = ?

Solution:

Chemical equation:

3H₂SO₄  + 2Fe      →          Fe₂(SO₄)₃  + 3H₂

now we will compare the moles reactant with product.

               H₂SO₄         :          Fe₂(SO₄)₃  

                  3               :              1

                 15               :              1/3×15 = 5

                H₂SO₄         :            H₂

                  3               :              3

                 15               :              15

                Fe               :          Fe₂(SO₄)₃  

                  2               :              1

                 13               :              1/2×13 = 6.5

                Fe               :                H₂

                  2               :                 3

                 13               :              3/2×13 = 19.5

Number of moles of product formed by  H₂SO₄ are less thus it will act as limiting reactant.

8 0
3 years ago
Other questions:
  • You perform a combustion analysis on a 255 mg sample of a substance that contains only C, H, and O, and you find that 561 mg of
    10·2 answers
  • What is an environmental hazard created by humans?
    9·1 answer
  • Draw structures for (a) a chain isomer, (b) a positional isomer, and (c) a functional isomer of hexan-1-ol
    12·1 answer
  • A compound is found to have an empirical formula of CH2O. If its molecular mass is 60.0 g/mol, what is its molecular formula?
    14·1 answer
  • Which wind blows cool air toward the sea at night ?
    6·2 answers
  • Which of the following is a chemical change?
    11·2 answers
  • ______ reactions generate thermal energy in a nuclear power plant as water is changed into steam
    11·2 answers
  • How many significant figures should the following answer have? (23.34 cm)(90076 cm)(2.1223 cm) = cm
    14·2 answers
  • How many moles of Fe contains 3.41 x 1023 Fe atoms?
    14·2 answers
  • Which elements form ions that are usually colored in solid compounds and in solution? A. alkali metals B. alkaline earth metals
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!