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Digiron [165]
3 years ago
8

Which of the following reactions substitutes one element in a reactant with another to form a product?

Chemistry
2 answers:
Kruka [31]3 years ago
4 0
I believe the answer is A. single-displacement 
Ann [662]3 years ago
3 0
Its A. because it substituting one element with another. If it said its substituting 2 then it would be double replacement
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Convert 27.7 kilometers to centimeters.
Stolb23 [73]

Answer:

The correct answer is - 2770000 cm.

Explanation:

1 kilometer = 1000 meter

1 meter = 100 centimeter

1 kilometer = 100*1000 cm

1 km = 100000 cm.

then,

27.7 kilometers = 2.77 × 10^6 centimeters

So, 27.7 kilometers = 27.7 × 100000

= 2.77 × 106 or 2770000 centimeters.

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