Question

question 4
15 poin
liquid nitrogen boils at - 195.8°c. express the boiling point of liquid nitrogen in kelvin.
your answer should have 3 significant figures. (do not put the unit on your answer)
add your answer
integer, decimal, or e notation allowed
question 5
15 po
lead melts at 601.0°c. what temperature is this in °f?
your answer should have 4 significant figures. (do not put the unit in your answer).

Explanation:

Question 4

Step1: Recall temperature - conversion formula

The formula to convert Celsius to Kelvin is $K = ^{\circ}C+ 273.15$.

Step2: Substitute the given Celsius value

Given $^{\circ}C=-195.8$, then $K=-195.8 + 273.15$.

Step3: Calculate the result

$K = 77.35\approx77.4$ (rounded to 3 significant figures)

Step1: Recall Celsius - to - Fahrenheit conversion formula

The formula to convert Celsius to Fahrenheit is $^{\circ}F=\frac{9}{5}\times^{\circ}C + 32$.

Step2: Substitute the given Celsius value

Given $^{\circ}C = 601.0$, then $^{\circ}F=\frac{9}{5}\times601.0+32$.

Step3: First, calculate $\frac{9}{5}\times601.0$

$\frac{9}{5}\times601.0 = 9\times120.2=1081.8$.

Step4: Then, add 32

$^{\circ}F=1081.8 + 32=1113.8\approx1114$ (rounded to 4 significant figures)

Answer:

77.4

Question 5