3 years ago

Which two observations below can be evidence that a chemical change has occurred

1 answer:

5 0

Vaporization and Production of bubbles. Production of heat and melting are physical changes

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Stells [14]

$by \: Charles'\: law: \: \\ \frac{v_{1}}{t_{1}} = \frac{v_{2}}{t_{2}} \\$

Where v is the volume(in L) and t is the temperature(in °K)

$\frac{8}{250} = \frac{v_{2}}{75} \\\\4/5 =v_2/3 \\\\\boxed{v_{2} = \frac{12}{5}}\\\\\\\huge{=2.5 l}$

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2 years ago

lana [24]

Answer:

Lithosphere: Volcanos..

Hydrosphere: Rain falls..

biosphere: Plants..

Explanation:

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bogdanovich [222]

Less water = less weight to make it rise
More water = more weight to make it dive

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DedPeter [7]

Sissy imposter among us haha

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viva [34]

It is either
volume or pressure

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3 years ago