Energy transfer is not an efficient process.
Explanation:
There is less amount of energy in the top of the energy pyramid than at the bottom because energy transfer is not an efficient process. During the process of energy transferring, some amount is lost and some are converted to other forms of energy.
- The sun is the ultimate source of energy for all life in the solar system.
- When autotrophs takes this energy, they produce food from it.
- They use light energy from the sun to produce chemical energy in food.
- Even this conversion process waste precious amount of energy.
- As one goes up the pyramid, more energy is lost during the process of converting from one form to another.
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Answer:
p1/T1=p2/T2
760mmHg/212°F=731mmHg/T2
T2= 203.91°F
760mmHg/100°C=731mmHg/T2
T2= 96.18°C
Explanation:
You'd have to choose in which units you want to express the temperature.
Answer number 2 is correct
Answer: D
Explanation:
Reduction involves the gaining of electrons.
- This eliminates choices A and C.
However, charge must be balanced, and this is not the case for choice B, but it is the case for choice D
Are you referring to this reaction?
N2 + 3H2 --> 2NH3
If so, then let us work it out.
6 liters of H2 at STP is: We will be using stochiometry on the equation, therefore, in ever 3mol of H2 that you react, you have to react 1 mol of N2 too.
6L (1000mL/L) ( cm^3/mL) (m/100cm)^3 ( .0899kg/m^3 )(1000g/kg) (1mol/ 2.016g)
= .2678mols of H2.
So,
.2678mols of H2 ( 1mol N2 / 3mols of H2) is .08927 mols N2
Then, by using the properties of nitrogen, continue working it out by doing the same conversion backwards:
.08927mols x 28.02 g/mol x kg/1000g x 1m^3 / 1.2506kg x (100cm/m)^3 x mL/cm^3 x L/1000mL = 2L
<span>Therefore, 2 Liters is required for the reaction above.</span>
