Answer:
The final temperature of the mixture is 44.9°C
Explanation:
Mass of the substance (gold) = 2.575g
Specific heat capacity of gold = 0.129J/g°C
Initial temperature (T1) = 75°C
Final temperature (T2) = ?
Energy lost = 10J
Heat energy(Q) = MC∇T
Q = heat energy (in this case lost)
M = mass of the substance
C = specific heat capacity of the substance
∇T = change in temperature of the substance = (T2 - T1)
Q = MC∇T
Q = MC(T2 - T1)
-10 = 2.575 × 0.129 × (T2 - 75) energy is -ve because it was energy lost.
-10 = 0.3321 × (T2 - 75)
-10 = 0.3321T2 - 24.9075
Collect like terms
0.3321T2 = 24.9075 - 10
0.3321T2 = 14.9075
T2 = 14.9075 / 0.3321
T2 = 44.88
T2 = 44.9°C
The final temperature of the mixture is 44.9°C
Answer:
The molecular weight (molar mass) of any gas is the mass of one particle of that gas multiplied by Avogadro's number (6.02 x 1023).
Explanation:
How do you find the molar mass of a gas?
First the ideal gas law will be used to solve for the moles of unknown gas (n). Then the mass of the gas divided by the moles will give the molar mass.
Answer:
I think it would be a,b,c,d,e but im not sure
Explanation:
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Answer:
5.Hey Order of reaction is :-
Y>Z>X
6.Phosphorus is soft, waxy and reactive. It reacts with moist air and gives out light. It ignites spontaneously at about 350C and that's why it is stored under kerosene to prevent its reaction in the atmosphere.
it can be also stored in sealed bottles..
Explanation:
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<span>B, An Arrhenius acid donates H+ ions.</span>