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3 years ago

13

You burn a log on a fire. You use fire to warm yourself and help you see to read a book. What energy transformation is taking pl

ace?

1 answer:

Vinvika [58]3 years ago

5 0

Answer:

heat energy to keep you warm and light energy to be able to read your book

Explanation:

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A 7.00-mL portion of 8.00 M stock solution is to be diluted to 0.800 M. What will be the final volume after dilution? Enter your

amm1812

Explanation:

The number of moles of solute present in liter of solution is defined as molarity.

Mathematically, Molarity = $\frac{\text{no. of moles}}{\text{Volume in liter}}$

Also, when number of moles are equal in a solution then the formula will be as follows.

$M_{1} \times V_{1} = M_{2} \times V_{2}$

It is given that $M_{1}$ is 8.00 M, $V_{1}$ is 7.00 mL, and $M_{2}$ is 0.80 M.

Hence, calculate the value of $V_{2}$ using above formula as follows.

$M_{1} \times V_{1} = M_{2} \times V_{2}$

$8.00 M \times 7.00 mL = 0.80 M \times V_{2}$

$V_{2} = \frac{56 M. mL}{0.80 M}$

= 70 ml

Thus, we can conclude that the volume after dilution is 70 ml.

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2 years ago

Protons are positively charged and repel other protons. Which other particle is found in the nucleus and separates protons so th

VashaNatasha [74]

Neutrons which doesn't have any charge

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3 years ago

During an experiment, the percent yield of calcium chloride from a reaction was 85.22%. Theoretically, the expected amount shoul

devlian [24]

The formula to find yield is

(Actual Yield)/(Theorectical Yield) x100

Just do the math.

85.22% x 113 = 96.2986

Convert it to 3 significant figures

Ans: 96.3g

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3 years ago

Read 2 more answers

When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. the reason for this is?

Digiron [165]

<span>iron gets hotter before copper.</span>

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2 years ago

Someone please help!!!!

Blababa [14]

I'm not 100% sure on this one, but I think it's C.

Sorry, I'm not really good with Chemistry.

Hope this helps :)

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2 years ago