Answer:
A. Thermal enerfy and light
Explanation:
Answer:
0.1739
Explanation:
0.800 mol of N2
0.200 mol of H2
0.150 mol of CH4
Total moles of the mixture = 0.8 + 0.2 + 0.150 = 1.150 mol
Mole fraction of H2 = Number of moles of H2 / Total moles
Mole Fraction = 0.2 / 1.150 = 0.1739
The answer is A original materials remain after a physical.
Answer:
Through oxidation of food materials
Explanation:
When living organisms eat, they ingest complex organic food materials. As these food materials enter the body, the process of digestion begins.
Enzymes in the body, located at different parts of the gastrointestinal tract see to the breakdown of these complex food materials ingested. The oxidation of these complex food materials lead to the release of the chemical potential energy stored in them.
To calculate for the number of moles of SnO2 in the sample, we need the value of the products from the reaction. Since we do not have that data, we can assume that all of the sample is SnO2. Then, we are given the molecular mass of the sample, 151g/mol.
So, the number of moles is 3g / 151 g/mol = 0.0199 moles SnO2
