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Ludmilka [50]
3 years ago
9

I need help on this please

Chemistry
1 answer:
Hunter-Best [27]3 years ago
7 0
Tha is really easy just search them all up ,but ill get  u started 
In which season is the sun closest to the earth?Answer Summer

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How would you prepare 3.5 L of a 0.9M solution of KCl?
PolarNik [594]
V=3,5L\\
Cm=0,9M\\
M_{KCl}=74\frac{g}{mol}\\\\
C_{m}=\frac{n}{V}\\\\
n=\frac{m}{M}\\\\
C_{m}=\frac{m}{MV} \ \ \ \Rightarrow  \ \ \ m=C_{m}MV\\\\
m=0,9\grac{mol}{L}*74\frac{g}{mol}*3,5L=233,1g

B. Add 233 g of KCl to a 3.5 L container; then add enough water to dissolve the KCl and fill the container to the 3.5 L mark. 
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3 years ago
What is the term for combining 2 or more atoms together?
Vladimir [108]
Compound is e answer
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The boiling points of some of the unknown will be difficult to measure using the procedure described. identify the liquids that
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Answer:

Methyl Alcohol.

Acetate

Heptane

Dioxane

Explanation:

The boiling point of liquids are measure by observing the gas pressure or vapors temperature. There are few liquids whose boiling point is difficult to measure. The gas pressure differs for every liquid. It is important to observe the vapor pressure also to identify the boiling point. The most difficult boiling point identification is for Methyl alcohol as it has ability to absorb different level of pressure.

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4 years ago
How many joules of heat are absorbed when 73 g water are heated from 30*C to 43*C? *
stepladder [879]

Answer:

3966.82 J

Explanation:

q=sm∆T

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the specific heat for water is 4.18

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The kinetic theory describes the _____ of particles in all matter
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