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Anestetic [448]
2 years ago
13

A car traveled for 4.5 hours at a velocity of 210 km/hr. what is the distance that the car traveled?

Chemistry
1 answer:
Tomtit [17]2 years ago
8 0

Answer:

945 km

Explanation:

remember the formula using the triangle DST: just keep in your mind dst

D fr distance, s fr speed or velocity, t fr time

...........D..............

......S..........T.........

distance = velocity * time

= 210 * 4.5

= 945 km

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I have 2 samples of solid chalk (aka calcium carbonate). Sample A has a total mass of 4.12 g and Sample B has a total mass of 19
IRINA_888 [86]

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A) Sample B has more calcium carbonate molecules

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M = Molar mass of calcium carbonate = 100.0869 g/mol

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Moles of a substance is given by

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The ratio of the elements of carbon, oxygen, calcium atoms, ions, has to be same in both the samples otherwise the samples cannot be considered as calcium carbonate. Same is applicable for impurities. If there are impurites then the sample cannot be considered as calcium carbonate.

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