Answer:
Endothermic
Explanation:
An endothermic reaction is one in which energy is absorbed while an exothermic reaction is one in which energy is given out(evolved).
If we look at the reaction as written; 3C(graphite) + 3H2(g) + 88kcal -------> C3H8(g), we will notice that;
i) 88kcal of energy had to be absorbed for the reaction to occur
ii) The enthalpy change for the reaction is positive.
Since energy must be taken in to drive the forward reaction, then the reaction is endothermic as written.
Answer:
1) sunlight
2) radiation
3) radiant Energy
4) heat
5) temperature
Explanation:
1) Solar energy is derived from the sunlight.
2) Now, solar energy gets to the Earth's atmosphere by electromagnetic radiation which warms the Earth's surface.
3) Sunlight is a form of radiant energy because the light from the sun is transmitted by radiation to the earth.
4) When sunlight reaches the earth it is converted to heat energy.
5) Due to the heat from the sun, it will increase the Temperature of objects.
USe Boyel's law : P1V1=P2V2
125 mm Hg(x)=145 mmHgx.465
x=0.41 L
x=410 ml
The conversion factor from compound to element is actually
just based on the number of elements in the compound itself.
From the compound C12H22O11, we can say that there are 12
C, 22 H and 11 O, therefore the conversion factors are:
1 mol C12H22O11=12
moles of C
1 mol C12H22O11=22
moles of H
1 mol C12H22O11= 11 moles of O
C2H2O2 this is the empirical formula of glyoxal
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