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39. The fuel value of the hydrogen-containing fuel depends on the mass percentage of hydrogen. What is the mass percentage
of hydrogen in Octane (C8H18)?
A. 30.08%
B. 15.91%
C. 18.32%
D. 11.32%​


Sagot :

Answer:

I - Write each number in scientific notation.

1) 1) 0.000006 =

6) 0.0000002 =

2) 5400000 =

7) 2000000 =

3) 60 =

8) 71 × 103 =

4) 0.009 =

9) 48900 =

5) 6.7 =

10) 0.0000009 =

II - Write each scientific notation in standard notation.

1) 0.63 × 102 =

6) 8.3 × 107 =

2) 3.3 × 10-3 =

7) 1.71 × 106 =

3) 0.15 × 10-2 =

8) 7.5 × 10-5 =

4) 8.04 × 103 =

9) 4.0 × 10-4 =

5) 2.66 × 104 =

10) 8.4 × 105 =