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Bingel [31]
3 years ago
15

Write 6.3 x 10^2 in standard form. O 0.063 O 630 O 63 O 63

Chemistry
1 answer:
Leto [7]3 years ago
7 0

Answer:

it will be 630

Explanation:

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Vitamin c is known chemically by the name ascorbic acid determine the empirical formula of ascorbic acid if it is composed of 40
kow [346]

Answer:

=C_3H_4O_3

Explanation:

When percentage composition is given, and asked for the empirical formula, it is simplest to  assume 100 g of material. Thus,

Mass C = 40.92 g.  Moles C = 40.92 g x 1 mole/12 g = 3.41 moles C

Mass H = 4.58 g.  Moles H = 4.58 g x 1 mole/1.0 g = 4.58 moles H

Mass O = 54.50 g.  Moles O = 54.50 g x 1 mole/16 g = 3.41 moles O

Now, we want to get the moles into whole numbers, so we begin by dividing all by the smallest, i.e. divide all values by 3.41.

Moles C = 3.41/3.41 = 1

Moles H = 4.58/3.41 = 1.34

Moles O = 3.41/3.41 = 1

Now, in order to get 1.34 to be a whole number we multiply it (and all others) by 3

Moles C = 1x3 = 3

Moles H = 1.34x3 = 4

Moles O = 1x3 = 3

Empirical Formula =C_3H_4O_3

3 0
3 years ago
DNA is an example of a:<br> O A. Compound<br> B. Element<br> c. Mixture<br> D. Atom
Simora [160]

Answer:

The answer is option A.

Compound

Hope this helps you

5 0
3 years ago
Una sola dosis de etanol, C2 H5 OH, eleva el nivel intracelular de iones calcio. Los iones Ca2+ liberados por el etanol 0,10 M m
11Alexandr11 [23.1K]

Answer:

No se bro cual se la respuesta .......

Explanation:

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4 0
3 years ago
Any reaction that absorbs 150 kcal of energy can be classified as.
N76 [4]

Answer:

The Answer should be Endothermic reaction

Explanation:

Reactions in which energy is absorbed are called Endothermic reactions.

7 0
2 years ago
The atomic mass of carbon -13 is 13. It has six protons. How many neutrons does the isotope have​
marishachu [46]

Answer:

13 - 6 =7

Explanation:

8 0
3 years ago
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