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Vladimir [108]
3 years ago
12

What is the molarity of a solution that contains 125 g nacl in 4.00 l solution?

Chemistry
1 answer:
bogdanovich [222]3 years ago
4 0

Answer:

[NaCl[ = 0.535M

Explanation:

We determine the moles of solute:

125 g . 1 mol/ 58.45 g = 2.14 moles

Molarity (mol/L) → 2.14 mol / 4L → 0.535M

Molarity is a sort of concentration that indicates the moles of solute in 1L of solution

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How many liters of plasma are present in 8.5 pints?
stellarik [79]

Answer:

there are 4.0205 Litres of plasma in 8.5 pints

Explanation:

Recall that:

1 quart qt = 2 pints pt  and 1 quart = 946 mL

∴ two pints will contain 946 mL

and one pint will be = 946 mL/2

=  473 mL

Similarly, 8.5 pints will contain 473 mL × 8.5 = 4020.5  mL

We know that :

1000 mL = 1 Litres

Hence 4020.5 mL = (4020.5 /1000)L

= 4.0205 Litres

Therefore, there are 4.0205 Litres of plasma in 8.5 pints

4 0
3 years ago
The amount of stored chemical energy is what determines the temperature of a substance.
Orlov [11]

Answer:

False

Explanation:

Temperature is also heat energy, so chemical energy has no affect over it.

3 0
2 years ago
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What are two ways to make a saturated solution of NH3 in 100.g H20 at 60°C become unsaturated?
son4ous [18]
The two ways to make a saturated solution are 1 reducing the temperature of the solution and Adding more solute.<span> </span>
7 0
3 years ago
Question 3 of 8
vitfil [10]

Answer:

B

Explanation:

7 0
2 years ago
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which of the following compounds exhibits dipole -dipole forces as its strongest attraction between molecules? o2,ch3Br,CCl4,He,
Archy [21]

Answer:

B. CH3Br

Explanation:

Dipole -Dipole interactions take place in polar molecules.

CH3Br exhibits dipole -dipole forces as its strongest attraction between molecules because it is a polar molecule due to the slightly negative dipole present on the Br molecule.

While O2 is a nonpolar molecule due to its linear structure, CCl4 has zero resultant dipole moment, Helium is non-polar and BrCH2CH2OH is a non polar compound having net dipole moment is zero.

Hence, the correct option is B. CH3Br.

3 0
3 years ago
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