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
marishachu [46]
3 years ago
15

How many formula units are in 25.4 g of MgCl2?

Chemistry
1 answer:
stiv31 [10]3 years ago
5 0

Answer: 1.58 x 10^{23}

Explanation:

1 mole of magnesium chloride has a mass of 95.211 g and contains 6.022⋅10^{23}formula units of magnesium chloride, you can say that,

25.0 g x (6.022 x 10^{23} form units MgCl2) /95.211 = 1.58 x 10^{23}

You might be interested in
Which of the following statements is NOT a part of John Dalton's atomic theory?
Goshia [24]

The statement that is NOT a part of John Dalton's atomic theory Electrons move in specific orbits around the nucleus of an atom. The statements ‘All elements are composed of atoms that cannot be divided’, ‘All atoms of the same element are exactly alike and have the same mass’ and ‘Every compound is composed of atoms of different elements, combined in a specific ratio’ are not his theory.

7 0
4 years ago
PLEASE HELP ME WITH MY CHEM TEST
fgiga [73]

Answer:

8. 0.96

9. d

10b

11. 3

12 d

Explanation:

4 0
3 years ago
What is the source of energy for the Sun?
nikitadnepr [17]

Answer:

Nuclear fusion

Explanation:

Nuclear fusion is the source of Sun's energy.. At the core where temperature and pressure are very high hydrogen atoms fuse into helium atom and release energy in the form of Gama rays.

3 0
3 years ago
Explain how scientist learned about the magnetic poles of the Earth.
MatroZZZ [7]

Answer:

They learned because they keeped studying they would never give up and if they found something new or interesting they may have just studied it more.

Explanation:

3 0
3 years ago
Read 2 more answers
Which orbitals form a pi bond?
bekas [8.4K]

Answer:

p  and d orbitals

Explanation:

A π bond forms when two orbitals overlap side-on.

The most common types are formed by the overlap of p orbitals (Fig. 1).

However, d orbitals can also overlap sideways with each other to form dπ-dπ bonds and with p orbitals to form dπ-pπ bonds (Fig.2).

8 0
3 years ago
Other questions:
  • In guinea pigs, short hair (H) is dominant to long hair (h). Two heterozygous (hybrid) guinea pigs are crossed. Complete the Pun
    13·1 answer
  • Chromium-51 is a radioisotope that is used to assess the lifetime of red blood cells The half-life of chromium-51 is 27.7 days.
    13·1 answer
  • Using the combined gas law above, identify the variables that would be in the numerator (A) and denominator (B) if you were to r
    6·1 answer
  • An irreversible reaction is one that:
    8·1 answer
  • What is the entropy change for the freezing process of 1 mole of liquid methanol at its freezing temperature (–97.6˚C) and 1 atm
    11·1 answer
  • What is the numerical value of KcKc for the reaction if the concentrations at equilibrium are 0.10 MM SO2SO2, 0.18 MM O2O2, and
    10·1 answer
  • How does weathering break down or change rocks
    15·1 answer
  • Identify the missing information for each atom or ion. Note that the atoms and ions are not necessarily neutral.
    15·1 answer
  • Which of the following options correctly balances the equation below? __HNO2 + __O2 --> __HNO3
    5·1 answer
  • in an experiment 3.5g of element A reacted with 4.0g of element G to form a compound Calculate the empirical formula for this co
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!