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?

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

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.