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
Semmy [17]
2 years ago
10

A student determines that a 9.8 g mixture of MgCl₂ (s) and NaNO3(s) contains 0.050 mol of

Chemistry
1 answer:
Damm [24]2 years ago
6 0

mass MgCl₂ = mol x MM MgCl₂ = 0.05 x 95.211 g/mol = 4.76 g

mass Cl in MgCl₂ :

= (2 x AM Cl)/MM MgCl₂ x mass MgCl₂

= (2 x 35.5 g/mol)/95.211 g/mol x 4.76

= 3.55 g

% mass Cl in the mixture :

= (mass Cl / mass mixture) x 100%

=  3.55 / 9.8 x 100%

= 36.22%

You might be interested in
Which one is the odd one out between melting and evaporating
Kaylis [27]
Evaporating is the right one
8 0
3 years ago
Cesium has a radius of 272 pm and crystallizes in a body-centered cubic structure. What is the edge length of the unit cell
olchik [2.2K]

Answer: Edge length of the unit cell = 628pm

Explanation: For a body centred cubic structured system, the relationship between the edge length of the unit cell and radius of the atoms in the structure is

Edge length of Unit cell (a) = (4R)/(√3)

R = 272pm = (272 × (10^-12))m = (2.72 × (10^-10))m

a = (4 × (2.72 × (10^-10)))/(√3)

a = (6.28157 × (10^-10))m = 628pm

4 0
3 years ago
How many atoms are in 8.28 moles of aluminum?
Lilit [14]

Answer:

49.86 × 10²³  atoms of Al

Explanation:

Given data:

Number of moles of Al = 8.28 mol

Number of atoms = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

For 8.28 moles of Al:

1 mole = 6.022 × 10²³  atoms of Al

8.28 mol×6.022 × 10²³  atoms / 1mol

49.86 × 10²³  atoms of Al

4 0
3 years ago
Hey man forgets that he said his coffee cup on the top of his car he starts to drive in the coffee cup rolls off the car onto th
Lyrx [107]
It would move due to it not being<span> the same speed and in the same direction so it is acted upon by an unbalanced force.</span>
8 0
3 years ago
10. What is one radioactive element that is used ir nuclear power plants?​
lana [24]
Radium is an element used
7 0
3 years ago
Read 2 more answers
Other questions:
  • True or false. An excited state is less stable than a ground state
    12·1 answer
  • What type of electrons are involved in chemical reactions?
    11·1 answer
  • Plastic sheet is transparent or translucent?
    9·1 answer
  • Answer:
    9·2 answers
  • Which of the following is equal to 2.3 cm3?
    9·1 answer
  • What is process of bringing water to boiling affects
    6·1 answer
  • which of the following will stay consant, no matter if the substance is in the solid, liquid, or gas state​
    7·1 answer
  • Which of the following intermolecular forces is the strongest?
    8·1 answer
  • Which of the following describes a subalpine ecosystem?
    5·1 answer
  • Clouds form when water vapor out of the air
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!