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ikadub [295]
4 years ago
11

Which is the BEST evidence that a chemical change has occurred?

Chemistry
1 answer:
MaRussiya [10]4 years ago
3 0

d///////////////////////////////

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Shown is an infrared image of a star, Beta Pictoris. Why would scientists use infrared light to take this image instead of
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B is the correct answer
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3 years ago
Explain in YOUR words what factors determine which type of fossil fuel forms; coal, oil, or gas.
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Answer:  three very important kinds of things: coal, oil, and natural gas.

Explanation:

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3 years ago
ethanol is a common laboratory solvent and has a density of 0.789 g/mL. what is the mass, in grams, of 151 mL of ethanol
natta225 [31]
<em>V = 151 mL = 151 cm³</em>
<em>d = 0,789 g/mL = 0,789 g/cm³</em>
--------------------------------------

d = m/V
m = d×V
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3 0
3 years ago
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What is an ideal gas? how many ideal gases are there in the universe?
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6 0
4 years ago
Human reaction time is usually about 0.18 s. If your lab partner holds a ruler between your finger and thumb and releases it fro
Marizza181 [45]

Answer:

–0.16 m

Explanation:

From the question given above, the following data were obtained:

Time (t) = 0.18 s

Acceleration due to gravity (g) = –9.81 m/s²

Height (h) =?

We can obtain how far the ruler will fall by using the following equation:

H = ½gt²

H = ½ × –9.81 × 0.18²

H = ½ × –9.81 × 0.0324

H = –0.16 m

Thus, the ruler will fall –0.16 m before you will catch it.

7 0
3 years ago
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