The compound diborane can be used as a rocket propellant. What is the percent composition of boron in diborane (B2H6)? Α.22%
Β.25%
C.39%
D.75%
E.78%

Explanation:

atomic weight of B= 10.8

atomic weight of h = 1.0

B2H6 = 2*10.81+6*1= 27.62

out of total 27.62 the Boron contrubtion was = 2*10.81= 21.62

For 27.62 B2H6   21.62 is B

for 100 B2H6  = 21.62*100 /27.62

                       = %

can you calcualte and the coorect answer ?

c is the answer because when something is left after something evaporates that shows the chemical change.

yes

explanation:

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