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garik1379 [7]
3 years ago
13

If there are 20.0g of KOH available, how many grams Ca(OH)2 will form?

Chemistry
1 answer:
notka56 [123]3 years ago
6 0

Answer:

can u send the qsn 4rm the start so tt I can help

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Calculate the freezing point of a solution that contains 8.0 g of sucrose (C12H22O11) in 100 g of H2O. Kf for H2O = 1.86C/m
Aleks04 [339]

The freezing point of the sucrose solution is -0.435°C.

<h3>What is the freezing point of the solution?</h3>

The freezing point of the solution is determined from the freezing point depression formula below:

  • ΔT = mKf(H₂O)

Kf(H₂O) = 1.86 Cm

m is molality of solution = moles of solute/mass of solvent

moles of sucrose = 8.0/342.3 = 0.0233 moles

m = 0.0233/0.1 = 0.233 molal

ΔT = 0.233 m * 1.86°C/m.

ΔT = 0.435 °C.

Freezing point of sucrose solution = 0°C - 0.435°C

Freezing point of sucrose solution  = -0.435°C.

In conclusion, the freezing point of sucrose solution is determined from the freezing point depression.

Learn more about freezing point depression at: brainly.com/question/19340523

#SPJ1

8 0
2 years ago
What is the percent composition of a copper chloride compound if a 269 g sample contains 127 g of copper and 142 grams of chlori
Tems11 [23]

Answer:

Explanation:

The whole sample is 269

%copper = 127/269 * 100 = 47.2%

%chlorine = 142/269 * 100 = 52.8%

That's all you are asking. Is there more?

5 0
3 years ago
This science of classifying organisms is called?
Verdich [7]

The classifying of organisms is called "Taxonomy" or the second option. Taxonomy mainly takes place with organisms although it could be used to classify anything. Taxonomy consists of a graph with eight categories all used to classify a living organism.

Hope this helps!

4 0
3 years ago
Read 2 more answers
Which shows the correct relationship?
Deffense [45]
The correct answer is option B. i.e. E°cell > 0 = spontaneous reaction.

The spontaneous reactions always have positive voltage and the energy released in the reaction is used up to do work.
8 0
3 years ago
Which is an example of Temporal Isolation?
kati45 [8]

Answer:

A. Flowers that bloom in different months

Explanation:

Nature has a way of preventive the interbreeding of closely related species and temporal isolation is one of them. When species reproduce at a different time there is little chance of hybridization (intermixing) between two related species. Since this process occurs before the mating it is also termed as pre-mating isolation.

4 0
3 years ago
Read 2 more answers
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