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
Mariana [72]
3 years ago
10

How many formula units make up 29.2 g of magnesium chloride (MgCl2)?

Chemistry
1 answer:
arlik [135]3 years ago
7 0
Formula units??? im assuming moles 
if its how many moles of mgcl2 in 29.2g of mgcl2
to find moles: Mass / RFM = 29.2/95 = 0.307mol

if its the number of atoms: Moles x Avogadro contestant
0.307 x 6.02x10+23 

hope that helps
You might be interested in
The National Environmental Policy Act was established in 1965. True or false
Mariana [72]
The answer to your question is false

5 0
3 years ago
Read 2 more answers
Nitrogen dioxide and water react to form nitric acid and nitrogen monoxide, like this:
posledela

Answer: The value of the equilibrium constant Kc for this reaction is 3.72

Explanation:

Equilibrium concentration of HNO_3 = \frac{15.5g}{63g/mol\times 9.5L}=0.026M

Equilibrium concentration of NO = \frac{16.6g}{30g/mol\times 9.5L}=0.058M

Equilibrium concentration of NO_2 = \frac{22.5g}{46g/mol\times 9.5L}=0.051M

Equilibrium concentration of H_2O = \frac{189.0g}{18g/mol\times 9.5L}=1.10M

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K_c  

For the given chemical reaction:

2HNO_3(aq)+NO(g)\rightarrow 3NO_2(g)+H_2O(l)

The expression for K_c is written as:

K_c=\frac{[NO_2]^3\times [H_2O]^1}{[HNO_3]^2\times [NO]^1}

K_c=\frac{(0.051)^3\times (1.10)^1}{(0.026)^2\times (0.058)^1}

K_c=3.72

Thus  the value of the equilibrium constant Kc for this reaction is 3.72

5 0
2 years ago
How many electrons can be held in the third orbital?.
Evgen [1.6K]
32 electrons. as the orbitals get father away from the nucleus, they hold more electrons.
6 0
3 years ago
Read 2 more answers
What’s the number 9.1x10^3 in standard form
mafiozo [28]

Answer:

.0091

Explanation:

3 0
3 years ago
The high polarity of the oxygen-carbon bond in alcohols is what allows them to be soluble in water.
Anna11 [10]

This is false. An alcohol does indeed have a polar C-O single bond, but what we should really be focusing on is the extraordinarily polar O-H single bond. When oxygen, fluorine, or nitrogen is bound to a hydrogen atom, there is a small (but not negligible) charge separation, where the eletronegative N, O, or F has a partial negative charge, and the H has a partial positive charge. Water has two O-H single bonds in it (structure is H-O-H). The partially negative charge on the O of the water molecule (specifically around the lone pair) can become attracted either a neighboring water molecule's partially positive H atom, or an alcohol's partially positive H atom. This is weak (and partially covalent) attraction is called a hydrogen bond. This is stronger than a typical dipole-dipole attraction (as would be seen between neighboring C-O single bonds), and much stronger than dispersion forces (between any two atoms). When the solvent (water) and the solute (the alcohol) both exhibit similar intermolecular forces (hydrogen bonding being the most important in this case), they can mix completely in all proportions (i.e. they are miscible) in water.

8 0
3 years ago
Other questions:
  • The state of matter of a material depends on its what?
    13·2 answers
  • At what temperature <br> does water boil
    15·2 answers
  • When the following reaction is completed and written in the form of a net ionic equation, which of the following elements will N
    13·1 answer
  • Of the following, which is most likely to result after a farmer sprays his crops with pesticides?
    14·2 answers
  • Observe: Change the Surface area from Minimum to Maximum. You can imagine that a
    10·1 answer
  • If you are given the wavelength and speed of a wave, the formula you use to calculate the frequency is
    8·1 answer
  • Which statement best describes the Modern Atomic Theory?
    15·1 answer
  • What most likely to cuase the rate of a chemical reaction to increase
    6·2 answers
  • In a roller coaster, both the kinetic and potential energy in the car decreases at
    11·1 answer
  • How is hydrogen an example of an element?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!