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aksik [14]
4 years ago
6

A _____ works by lighting the slide containing the specimen from below with a light bulb.

Chemistry
1 answer:
lesya692 [45]4 years ago
5 0
Condenser Lens - This lens system is located immediately under the stage and focuses the light on the specimen.
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A 42.0g sample of compound containing only C and H was analyzed. The results showed that the sample contained 36.0g of C and 6.0
user100 [1]

Answer:

What is the empirical formula of the compound?

Explanation:

When the relative masses of elements in a hydrocarbon are given, it is possible to use this information to obtain the empirical formula by dividing the given masses of each element by the relative atomic masses of the element. The lowest ratio is now used to divide through to obtain the empirical formula of the compound.

The empirical formula only shows that ratio of atoms of each element present in the compound. From the information provided, the empirical formula of the compound is CH2. Hence the answer.

5 0
3 years ago
According to the following reaction, how many moles of carbon dioxide will be formed upon the complete reaction of 28.6 grams of
Musya8 [376]

Explanation:

We have 2CO + O2 => 2CO2.

Moles of CO = 28.6g / (28g/mol) = 1.021mol.

Moles of CO2 = Moles of CO = 1.021mol.

4 0
3 years ago
How many moles are there in 3.45 moles of Carbon
VladimirAG [237]

Answer:

It would be 151.832775 because one mole is 44.0095*3.45 i hope this helps!

Explanation:

7 0
3 years ago
How many ml of water will it take to fill 2.0 l bottle that already contains 1.25 l of
zalisa [80]

First off, we can find the volume that need to be filled:

2-1.25

=0.75L

Asbthe unit is still in Litres,we need to converge it to mL.

1L = 1000mL

mL needed:

=0.75×1000

=750mL

Therefore the answer is 750mL.

Hope it helps!

3 0
3 years ago
What is meant by “normal” when you are asked for normal boiling and melting points?
RideAnS [48]

Answer:

Normal boiling point is the temperature at which a liquid boils at 1 atmosphere of pressure.

Explanation:

8 0
3 years ago
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