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algol [13]
3 years ago
9

the compound diborane can be used as a rocket propellant. what is the percent composition of boron in diborane

Chemistry
2 answers:
Blababa [14]3 years ago
3 0

Answer:

78.14 % B; 21.86 % H

Step-by-step explanation:

The formula of diborane is B₂H₆.

The masses of each element are:

2B  = 2 × 10.81    = 21.62    u

6H = 6 ×   1.008 = <u>  6.048  u </u>

             TOTAL =  27.67    u


% B = 21.62/27.67 × 100

        = 78.14 %

% H = 6.048/ 27.67

        = 21.86 %

nikitadnepr [17]3 years ago
3 0

Answer:

22% for plato and edmentum users

Explanation:

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8 0
3 years ago
identify the law that explains the following observation nitrogen dioxide can be formed by reacting 14 G of nitrogen with 32 gra
Mrrafil [7]

Answer:

The law of definite proportions. I had the same question for chemistry and this is what they said was right so I got 100%.

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8 0
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what is the region surrounding the nucleus which is occupied by electrons?????? its a crossword ( _ _ _ _ _ _ _ _ C _ _ _ _)
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Answer:

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Explanation:

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Talja [164]
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8 0
3 years ago
Sulfur is a nonmetalic mineral that has a density of 2 g/cm3. The volume of a sample of sulfur was measured to be 5.0 cm3. what
taurus [48]

Answer:

<h2>10 g</h2>

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