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Vera_Pavlovna [14]
2 years ago
7

PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE H

ELP PLEASE HELP
DUE IN 5 MINUTES CHEMISTRY DIMENSIONAL ANALYSIS

In 2009, Usain Bolt ran 100 meters in 9.58 seconds. What is this speed in km/hr? (!! DIMENSIONAL ANALYSIS!! NOT A REGULAR PROBLEM)

Chemistry
1 answer:
Goryan [66]2 years ago
4 0
100 m = 0.1 km
9.58 sec = 9.58/3600 = 0.00266 hr
Speed = 0.1/0.00266= 37.6 km/hr
Can you mark it brainliest?
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About 3% of the water on Earth is freshwater. Only about 40% of that freshwater is available for human use. Why is so much fresh
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For each of the following choose the variable that will be more favorable in solution formation. A) Weak or Strong Solvent inter
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Based on factors affecting solution formation;

  • Strong solvent-solute intermolecular forces favors solution formation.
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<h3>What is a solution?</h3>

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Strong solvent-solute intermolecular forces favors solution formation.

Increase in entropy favours solution formation

Decrease in enthalpy favours solution formation.

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6 0
2 years ago
When a metal reacts with oxygen gas what is the product formed
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Hello There!!

Explanation:

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hope this helps,have a great day!!

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6 0
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I RLLY NEED HELP. Use Image B (picture above) and calculate the density of a ring that has a mass of 32 grams. Read Page 11 "Mea
dimaraw [331]

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Mass of ring = 32 g

Volume of ring = 4 mL

Density of ring = 8 g/mL

Explanation:

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

Mass of ring = 32 g

Volume of water = 64 mL

Volume of water + ring = 68 mL

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Next, we shall determine the volume of the ring. This can be obtained as follow:

Volume of water = 64 mL

Volume of water + ring = 68 mL

Volume of ring =?

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Volume of ring = 68 – 64

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