Answer:
Q=0.16*c kJ
Explanation:
Heat transfer and energy changes is related by the equation
Q=mcΔT
where
Q=heat transfer
m=mass of substance
c=specific heat of the material
ΔT= change in temperature
Given
m= 4 kg
c=c
ΔT=40° C
Q=4*c*40
Q=160c
Q=160/1000*c kJ
Q=0.16*c kJ
I think the velocity will be 300
5.55 mol H2O
Explanation:
Water has a molar mass of 18.01528 g/mol. We can then calculate the number of moles of water as
100 g H20 × (1 mol H2O/18.01528 g H20)
= 5.55 mol H2O
Answer:
Explanation:
We need to assume that the density of the concrete is about 2350 Kg/m^3. And using the dimensions of the highway we can calculate the volume of the highway.