How does experiments help scientist learn about the world

Chemistry

1 answer:

PSYCHO15rus [73]2 years ago

5 0

Experiments test the scientists' ideas.

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How do you get the nitrogen you need ?

erastova [34]

We can't use the nitrogen present in the atmosphere although 80% of the atmosphere consists of nitrogen only.We get this from the plants called as leguminous plants which can convert or fix atmospheric nitrogen into usable ones..

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Why does his teacher ask him to balance the equation by including the correct coefficients? to show that most molecules exist in

Ne4ueva [31]

Answer:

to show that atoms are conserved in chemical reactions

Explanation:

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A patient needs to be given exactly 1000 ml of a 5.0% (w/v) intravenous glucose solution. the stock solution is 55% (w/v). how m

LiRa [457]

The patient needs 1000 ml of 5% (w/v) glucose solution
i.e 1000 ml x 5 g/ 100 ml
where the stock solution is 55% (w/v) = 55 g / 100 ml
So, 1000 ml x 5 g / 100 ml = V (ml) x 55 g / 100 ml
V = 1000 x (5 / 100) / (55 / 100) = 5000 / 55 = 90.9 ml
∴ the patient needs 90.9 ml of 55% (w/v) glucose solution

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3 years ago

What is the systematic name and molecular formula of these two:

Hitman42 [59]

Answer:

2,4-di Ethyl-2-methylpentane

C10H22

3,4 dimethyl heptane

C9H20

Explanation:

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