Answer:
Explanation:
We want to find the density. The formula is mass over volume.
The mass is 500 kilograms. The volume is 0.026 cubic meters.
Substitute the values into the formula.
Divide.
This is just about equal to 19,320 kg/m³, so choice A is correct.
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C the answer is cesium, study's show that it has the lowest ionization out of all elements. Hope this helped!
Answer:
7430.5 Joules (7.4*10^4 Joules)
Explanation:
Q=mc∆T
where Q is energy in Joules.
Now m=250 g
c= 0.386 J/g°C
∆T = 99 - 22 = 77 °C
plugging the values in gives
Q=250*0.386*77=7430.5 Joules
(7.4*10^4 Joules, if 2 significant figures)
