PLEASE HELP! conversion question

Chemistry

1 answer:

just olya [345]3 years ago

7 0

Answer: The answer in three significant figures is $0.610K/s$

Explanation:

We need to see the relation between milliK and K which is :

$1mK=10^{-3}K$

Thus $1mK/s=10^{-3}K/s$

Using unitary method:

If $1mK/s=10^{-3}K/s$

$610mK/s=\frac{10^{-3}K/s}{1mK/s}\times 610mK/s\\\\=0.610mK/s$

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Thus the answer in three significant figures is $0.610K/s$

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Wine goes bad soon after opening because the ethanol in it reacts with oxygen gas from the air to form water and acetic acid , t

Fynjy0 [20]

Answer:

7.00 g

Explanation:

There is some information missing. I think this is the complete question:

<em>Wine goes bad soon after opening because the ethanol CH₃CH₂OH in it reacts with oxygen gas O₂ from the air to form water H₂O and acetic acid CH₃COOH, the main ingredient of vinegar. What mass of ethanol is consumed by the reaction of 4.86g of oxygen gas? Round your answer to 3 significant digits.</em>

<em />

First, we have to write the balanced equation.

CH₃CH₂OH + O₂ ⇒ CH₃COOH + H₂O

Then, we can establish the following relations: