2 years ago

Which situation provides the best evidence that a chemical reaction is taking place?

Physics

1 answer:

geniusboy [140]2 years ago

5 0

Answer:

A new product is formed

Explanation:

Physical reactions generally result in a change of state (solid, liquid, gas). Chemical reactions generally result in the production of a new product/ substance (structure/ properties are different than the intial reactants'... example= burning wood)

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Answer:

The correct answer is :

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Explanation:

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Explanation:

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2 years ago

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nataly862011 [7]

Answer:

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2 years ago

A reconnaissance plane flies 556 km away from

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We use the formula, to calculate the average speed of the round trip,

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$d_{total=556\ km+556\ km=1112 \times 10^3\ m$

$t_{total}=\frac{556 \times 10^3 m}{832 m/s} + \frac{556 \times 10^3 m}{1248 m/s}$ .

Thus,

$v_{av} =\frac{1112 \times 10^3\ m}{\frac{556 \times 10^3 m}{832 m/s} + \frac{556 \times 10^3 m}{1248 m/s}} =\frac{1112 \times 10^3\ m}{668.26\ s+445.51\s} \\\\v_{av}=998.41\ m/s$ .

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3 years ago