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BabaBlast [244]
4 years ago
12

A compound has the empirical formula CH2O and a gram-formula mass of 60. grams per mole. What is the molecular formula of this c

ompound?
(1) CH2O (3) C3H8O
(2) C2H4O2 (4) C4H8O4
Chemistry
1 answer:
AlladinOne [14]4 years ago
4 0
We already know the molar mass of C is 12.01g/mol, of H is 1.008 g/mol, and of O is 16g/mol.

If the molecular formula were also the empirical formula (which is CH2O), then it would have a molar mass of:
12.01g/mol +2*(1.008g/mol)+ 16g/mol= 30.03g/mol

However, the actual molar mass of the molecular formula is 60.g/mol, which is about twice as large as 30.03g/mol. Therefore, we have to multiply the empirical formula by 2.

The molecular formula of this compound is (2) C2H4O2.

Hope this would help~

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What is Bose Einstein state of matter and their examples
Valentin [98]

Answer:

A BEC ( Bose - Einstein condensate ) is a state of matter of a dilute gas of bosons cooled to temperatures very close to absolute zero is called BEC.

Examples - Superconductors and superfluids are the two examples of BEC.

Explanation:

8 0
3 years ago
476 nm = 4.76x10^[?] cm
Stolb23 [73]

Answer:

4.76×10¯⁵ cm

Explanation:

We'll begin by converting 476 nm to m. This can be obtained as follow:

1 nm = 1×10¯⁹ m

Therefore,

476 nm = 476 nm × 1×10¯⁹ m / 1 nm

476 nm = 4.76×10¯⁷ m

Finally, we shall convert 4.76×10¯⁷ m to cm. This can be obtained as follow:

1 m = 100 cm

Therefore,

4.76×10¯⁷ m = 4.76×10¯⁷ m × 100 cm / 1 m

4.76×10¯⁷ m = 4.76×10¯⁵ cm

Thus,

476 nm = 4.76×10¯⁵ cm

4 0
3 years ago
What are the reasons of greenhouse effect?
Leya [2.2K]

Answer:

Explanation:

Causes of Greenhouse Effect

  • Burning of Fossil Fuels. Fossil fuels are an important part of our lives.
  • Deforestation. Plants and trees take in carbon dioxide and release oxygen.
  • Farming.
  • Industrial Waste and Landfills.
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5 0
3 years ago
For the following reaction:
vlada-n [284]

Answer:

Nitrogen is the limiting reactant, and  

3.74

grams of ammonia is formed.

Explanation:

We have the familiar Haber process equation...

N

2

(

g

)

+

3

H

2

(

g

)

⇌

2

N

H

3

(

g

)

Since the mole ratio of  

N

2

to  

H

2

is  

1

:

3

, then for every mole of nitrogen, we would need three moles of hydrogen.

Explanation:

4 0
3 years ago
Among the following, which atom is most likely to form an ion with a charge of 2+?
Zigmanuir [339]

Answer:

C. Ca.

Explanation:

The atom loses or gains electrons forming anion or cation to reach stability (fill the outermost shell of the electron levels).

When atom gains electrons forms anions with negative charge.

While, when atom loses electrons forms cations with positive charge.

A. O:

O atom has 8 electrons in its nucleus and gains 2 electrons to reach stability (10 electrons, configuration of Ne).

<em>So, it forms O²⁻.</em>

<em></em>

B. AI:

Al atom has 13 electrons in its nucleus and loses 3 electrons to reach stability (10 electrons, configuration of Ne).

<em>So, it forms Al³⁺.</em>

<em></em>

C. Ca:

Ca atom has 12 electrons in its nucleus and loses 2 electrons to reach stability (10 electrons, configuration of Ne).

<em>So, it forms Ca²⁺.</em>

<em></em>

D. Na:

Na atom has 11 electrons in its nucleus and loses 1 electron to reach stability (10 electrons, configuration of Ne).

<em>So, it forms Na⁺.</em>

<em></em>

5 0
3 years ago
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