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nikklg [1K]
2 years ago
7

A 800N mountain climber scales a 160m cliff. How much work is done by the mountain climber?

Chemistry
1 answer:
Fittoniya [83]2 years ago
3 0

Answer:

Work done, W = 128 kJ

Explanation:

Given that,

Weight of a mountain climber, F = 800 N

It climbs to a cliff that is 160 m high.

We need to find the work done by the mountain climber. The work done by an object is given by the formula as follows :

W = Fd

Put the values of F and d.

W = 800 N × 160 m

W = 128000 J

or

W = 128 kJ

So, 128 kJ of work is done by the mountain climber.

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     2HCl + Na2 CO3 ----------> 2NaCl + H2CO3

2) Write the molar ratios:

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3) Convert 0.15g of sodium carbonate to number of moles

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0.028 liters * 1000 ml / liter = 28 ml.

Answer: 28 mililiters of 0.1 M HCl.
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