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Nana76 [90]
3 years ago
15

The state of matter that exists only at extremely low temperature is called bose einstein

Chemistry
1 answer:
hoa [83]3 years ago
5 0
There are five known phases, or states, of matter: solids, liquids, gases, plasma and Bose-Einstein condensates. The main difference in the structures of each state is in the densities of the particles.
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How many grams of H2 are needed to produce 10.42 g of NH3
tamaranim1 [39]
N2 + 3 H2 >> 2 NH3 moles NH3 = 11.50 g /17.0307 g/mol=0.6753 the ratio between H2 and NH3 is 3 : 2 moles H2 needed = 0.6753 x 3/2 =1.013 mass H2 = 1.013 mol x 2.106 g/mol=2.042 g
8 0
2 years ago
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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
Someone help answer this for me tysm
Ghella [55]
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Which type of energy uses the photoelectric effect?
ikadub [295]

Answer:

My lovely people the answer is SOLAR

Explanation:

i just know

8 0
2 years ago
Why does one Oxygen atom bond with two Hydrogen atoms to form water? Why don't they bond in a different ratio?
Vladimir79 [104]

This is because oxygen (2.8.6) requires two electrons on its valence shell to attain stable configuration (2.8.8). Hydrogen (1) on the other hand requires one electron on its valence shell to attain stable configuration (2). Therefore in a covalent bond, it requires two hydrogen and one oxygen to share electrons and achieve stable configuration.  

4 0
3 years ago
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