Which of the following are signs of a chemical change/reaction? Select all that apply.
1 answer:
Answer:
the answers are
Explanation:
5,6,7,8&9.
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Mass = 5 g
volume = 20 cm³
density = mass / volume
therefore:
D = m / V
D = 5 / 20
D = 0.25 g/cm³
Answer: stay the same because it's a solid.
Explanation:
<u>Answer :</u>
- <u>Answer :because it happens due to moisture and oxygen </u>
Answer:
4feet
Explanation:
Because when he moves he only goes 4 miles every time I
<h3>
Answer: 144 g</h3>
Explanation:
Mass of glucose = moles × molar mass
∴ Mass of glucose = 0.8 mol × 180 g mol⁻¹
= 144 g
∴ the mass of glucose you need to have 0.8 mol of glucose = 144 g
