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Dominik [7]
3 years ago
8

What is the molar mass of Mg(NO3)2

Chemistry
1 answer:
ipn [44]3 years ago
4 0

Answer: The molar mass of magnesium nitrate is 148.3148 g/mol.

Explanation:

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Novosadov [1.4K]

Answer:

1.8

Explanation:

8 0
2 years ago
Read 2 more answers
What is the boiling point of water when 175.0 g of Na2SO4, a strong electrolyte is dissolved in 1.000 Kg of water?
liubo4ka [24]

Answer: 101.9^0C

Explanation:

Elevation in boiling point is given by:

\Delta T_b=i\times K_b\times m

\Delta T_b=T_b-T_b^0=(T_b-100)^0C = Elevation in boiling point

i= vant hoff factor = 3 (number of ions an electrolyte produce on complete dissociation)

Na_2SO_4\rightarrow 2Na^++SO_4^{2-}

K_f = freezing point constant = 0.512^0C/m

m= molality

\Delta T_b=i\times K_b\times \frac{\text{mass of solute}}{\text{molar mass of solute}\times \text{weight of solvent in kg}}

Weight of solvent (water)= 1.000 kg

Molar mass of solute Na_2SO_4 = 142 g/mol

Mass of solute Na_2SO_4  = 175.0 g

(T_b-100)^0C=3\times 0.512\times \frac{175.0g}{142g/mol\times 1.000kg}

T_b=101.9^0C

Thus the boiling point of water when 175.0 g of Na_2SO_4, a strong electrolyte is dissolved in 1.000 Kg of water is 101.9^0C

8 0
3 years ago
Which of the compounds below is not an example of a molecular solid?
Goshia [24]
E
Water is the only polar compound so I guess that must be odd one out. I’m sorry I’m of no actual help.
8 0
3 years ago
When liquid lemonade is placed in a freezer, its temperature slowly drops. Its molecules move less and less until they can only
Natali5045456 [20]
The answer is A the heat is removed because it’s freezing and now the lemonade is frozen which makes a solid
8 0
3 years ago
13. Explain why changes in the concentrations of the
poizon [28]

Answer:

It is temperature dependent only

Explanation:

For any system in equilibrium, the molar concentration of all species on the right hand side are related to the molar concentrations of those at the left side by a constant known as the equilibrium constant.

  • The equilibrium constant is a constant at a given temperature.
  • The constant is temperature dependent only.
  • It is not dependent on the values of concentration or pressure of a system.
5 0
2 years ago
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