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Answer: 1:4.69
Explanation:
The ratio can be expressed as:
Ua/Ub= √(Mb/Ma)
Where Ua/Ub is the ratio of velocity of hydrogen to carbon dioxide and Ma is the molecular mass of hydrogen gas= 2
Mb is the molecular mass of CO2 = 44
Therefore
Ua/Ub= √(44/2)
Ua/Ub = 4.69
Therefore the ratio of velocity of hydrogen gas to carbon dioxide = 1:4.69
which implies hydogen is about 4.69 times faster than carbon dioxide.
Hello!
The Sun is the main source of providing energy for the satellites. There are solar panels on the satellites to get solar energy from the sun. The sun does provide solar energy and since it's the main source of energy for the satellites, that leaves you with your answer which is solar energy.
I hope this helped!
I am, yours most sincerely,
SuperHeperThingy
1) Decomposition
2) CaCO3 → CaO + CO2
equation is already balanced
Answer:
a) 1,332 kJ are transferred
b) the temperature of the tree decreases 1.99 ºC
Explanation:
a) When a phase change occurs, the temperature remains constant for a pure substance, so, in this case, the heat transferred is:
Q = m*L, where m is the mass, and L is the latent heat, which for solidification of water is -333 kJ/kg:
Q = 4.00*(-333)
Q = -1332 kJ
So, 1,332 kJ are transferred.
b) If the amount of heat is transferred for the tree, and it has no phase change, it will receive a sensitive heat, which is:
Q = m*c*ΔT, where m is the mass, c is the specific heat, and ΔT the temperature change:
-1332 = 200*3.35*ΔT
670ΔT = -1332
ΔT = - 1.99 ºC
So the temperature of the tree decreases 1.99 ºC.