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Musya8 [376]
3 years ago
13

which sample, when dissolved in 1.0 liter of water, produces a solution with the highest boiling point?

Chemistry
1 answer:
Serga [27]3 years ago
6 0
After a thorough research, the same question exists with the following choices.
<span>
(1) 0.1 mole KI
</span><span>(2) 0.2 mole KI
</span><span>(3) 0.1 mole MgCl2
</span>(4) 0.2 mole MgCl<span>2

The correct answer is </span>(4) 0.2 mole MgCl<span>2. IN Vant Hoff factor, it is greater for MgCl2. There are more ions.</span>
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Can anyone check my chemistry answers?
frutty [35]
I check all of them. most of them correct but one

in question 6, the answer is the third choice. remember to find the neutrons, you take the atomic mass minus the atomic number. 38 - 18= 20
4 0
4 years ago
Neon is compressed from 100 kPa and 16°C to 500 kPa in an isothermal compressor. Determine the change in the specific volume and
Viktor [21]

Answer:

\Delta v=-0.952m^3/kg

\Delta h=0

Explanation:

In this case, since neon could be considered as an ideal gas, the specific volumes at the first and second state are respectively:

v_1=\frac{Rg*T_1}{p_1}=\frac{0.4119kJ/kg*K*289.15}{100kPa} =1.19m^3/kg\\

v_2=\frac{Rg*T_2}{p_2}=\frac{0.4119kJ/kg*K*289.15}{500kPa} =0.238m^3/kg\\

Thus, the change in the specific volume turns out:

\Delta v=v_2-v_1=0.238m^3/kg-1.19m^3/kg\\\Delta v=-0.952m^3/kg

Which value has sense for the compression.

In addition, the specific enthalpy change just depend on the temperature as it is an ideal gas, therefore, since the process es isothermic:

\Delta h=Cp\Delta T=0

Best regards.

3 0
4 years ago
Measure out 2.87 moles of sodium chloride (Nacl) into a clean dry cup. ​
Anettt [7]

Answer: weigh is m = n × M = 2.87 mol × 58.44 g/mol

Explanation: mass = amount of substance × molar mass

M((NaCl) = 22.99 +35.45

6 0
3 years ago
These reactions can also be reversed, breaking the large molecules into its individual molecules. what substance would need to b
lesantik [10]
The appropriate response is water. This reversible reaction can be broken into two responses. These two responses are happening all the while, which implies that the reactants are responding to yield the items, as the items are responding to deliver the reactants. Crashes of the responding atoms cause substance responses in a shut framework.
6 0
4 years ago
Fossil evidence sssssssssssssssssssssss
IRINA_888 [86]

Answer:

Fossils are essentially clues that have been left behind by various forms of living things. They are instrumental tools for understanding the diverse groups of organisms that have inhabited our planet at one time or another. A fossil is any preserved evidence of an organism.

i guess

Explanation:

5 0
3 years ago
Read 2 more answers
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