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antiseptic1488 [7]
3 years ago
13

Jose times how long sugar takes to dissolve in warm water. He conducts four trials of his experiment. What should he conclude fr

om his data?
Trial Time
1 30 seconds
2 32 seconds
3 10 seconds
4 29 seconds
Sugar does not dissolve in water.
The time recorded for Trial 3 may be inaccurate.
His experiment has very low precision.
Chemistry
1 answer:
zloy xaker [14]3 years ago
5 0

Answer:

His experiment has very low precision

Explanation:

Precision is how close the answers are together. The answers are increasing in time. So, this makes sence. None of the answers are similar to one another.

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An atom of 24/11 na decays by gamma decay which atom is left after the decay
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Answer:

Hello There!!

Explanation:

The atom is still 24Na.

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6 0
2 years ago
A helium balloon is filled on the ground where the atmospheric pressure is 768 torr. The volume of the balloon is 8.00 m3. When
Anvisha [2.4K]

Answer:

The correct option is: <u>B. 366 torr</u>

Explanation:

Given: <u>On the ground</u>- Initial Volume: V₁ = 8.00 m³, Initial Atmospheric Pressure: P₁= 768 torr;

<u>At 4200 m height</u>- Final Volume: V₂ = 16.80 m³, Final Atmospheric Pressure: P₂ = ?

Amount of gas: n, and Temperature: T = constant

<u>According to the Boyle's Law</u>, for a given amount of gas at constant temperature:         P₁ V₁ = P₂ V₂

⇒  P₂ = P₁ V₁ ÷ V₂

⇒  P₂ = [(768 torr) × (8.00 m³)] ÷ (16.80 m³)

⇒  P₂ = 365.71 torr ≈ 366 torr

<u>Therefore, the final air pressure at 4200 m height: P₂ = 366 torr.</u>

6 0
3 years ago
!!!!HURRY!!!! What reaction is endothermic?
Alex

Answer:

The reaction in which heat is absorbed from the surrounding is called endothermic reaction.

so

I think it's answer is 2nd option.

4 0
3 years ago
Study the animal and plant cell above. Select the features that you find in BOTH types of cells
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Plasma membrane,nucleus ,ribosomes
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3 years ago
GUYS PLEASE HELP MEEEE!!! On a hike up a mountain Delilah sees small pieces of rock along the trail, the small pieces look like
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Answer:

2?

Explanation:

Well the rocks can be thrown around or just start breaking down. Sorry if I'm not correct

4 0
3 years ago
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