2 years ago

Which of the following statements is correct?

Chemistry

1 answer:

Elenna [48]2 years ago

5 0

I think its A. Low pressure indicates rising air, Which allows clouds to from.

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SOVA2 [1]

Answer:

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2 years ago

A person's heartbeat is 73 beats per minute. If his heart beats 3.1e9 times in a lifetime, how long does the person live?

tiny-mole [99]

Answer: The person lived for 80.66 years.

Explanation:

Heart beat of the person = 73 beat /min

Number of total heart beats = $3.1\times 10^{9}$

Life span of the person : $\frac{\text{Total heart beats of the person}}{\text{Heart beat per minute}}=\frac{3.1\times 10^{9} beats}{73 beat/min}$

1 year =525600 mins

Life span = $0.0424\times 10^{9} min=80.66 years$

The person lived for 80.66 years.

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2 years ago

What is the molarity of a KOH solution if it requires 20 milliters of 2.0m HCL to exactcly neutalize 20 milliters of the KOH sol

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HCL 2.0x 3.6790= KOH SOLITION

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2 years ago

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How do I identify significant figures in chemistry?

Komok [63]

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2) STOP counting for sig. figs. On the LAST non-zero digit.

3) Non-zero digits are ALWAYS significant.

4) Zeroes in between two non-zero digits are significant. All other zeroes are insignificant.

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2 years ago

Which of these is not a mixture

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