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2 years ago

Which is a way to Express concentration of solution.?

Chemistry

2 answers:

Papessa [141]2 years ago

6 0

Answer:

The concentration of a solution can be expressed in terms of:

molality (m)=moles solute/kilogram solvent

Nataliya [291]2 years ago

5 0

Answer: concentration of solutions are expressed in various ways mol/L, mol/dm3, g/L etc

Explanation:

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2 years ago

Calculate: A. Mercury has a specific Heat Capacity of 0.14 J/goC. How much heat is needed to raise the thermometer temperature 1

kari74 [83]

Answer:

$\boxed {\boxed {\sf 56 \ Joules}}$

Explanation:

We are given the mass, specific heat, and temperature, so we must use this formula for heat energy.

$q=mc \Delta T$

The mass is 5 grams, the specific heat capacity is 0.14 Joules per gram degree Celsius. Let's find the change in temperature.

ΔT= final temperature - initial temperature
ΔT= 95°C - 15°C = 80°C

We know the variables and can substitute them into the formula.

$m= 5 \ g \\c= 0.14 \ J/ g \ \textdegree C \\\Delta T= 80 \ \textdegree C$

$q= (5 \ g )( 0.14 \ J/ g \ \textdegree C ) ( 80 \ \textdegree C)$

Multiply the first numbers. The grams will cancel.

$q= 0.7 \ J/ \textdegree C(80 \ \textdegree C )$

Multiply again. This time the degrees Celsius cancel.

$q= 56 \ J$

56 Joules of heat are needed.

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2 years ago

Which is a way to Express concentration of solution.?​

Which is a way to Express concentration of solution.?