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23 January, 16:39

Standard pressure is 101.3 KPa, which is equal to 760. o mmHg. If gas has a pressure of 545 mmHg, what is its pressure in KPa to the proper number of significant figures?

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  1. 23 January, 18:11
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    72.6 kPa

    Explanation:

    We can use ratios to answer this question

    760 mmHg : 101.3 kPa

    545 mmHg : x

    then we cross multiply keeping note of the unit

    760x mmHg = 55 208.5 mmHg. kPa

    x = 72.6 kPa

    *It is worth noting that the k that represents kilo in kPa must be a small letter all the time
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