1 CH4 (g) + 2 O2 (g) -----> CO2 (g) + 2H2O(l) ΔH= - 890 kJ
1 mol 2 mol
1) If ΔH has minus, it means "release". We need only "release" choices.<span>
2) From reaction
1 mol </span>CH4 (g) "releases" ΔH= - 890 kJ - We do not have this choice.
2 mol O2 (g) "release" ΔH= - 890 kJ, so
1 mol O2 (g) "release" ΔH= - 445 kJ
Correct answer is B.
Answer:
Technology helps us in many ways.
Explanation:
We can now research the world even more effectively and at a higher level of sophistication thanks to technological advancements. Telescopes, on the other hand, enable us to peer into the far corners of the universe and detect very large objects such as stars. Electron microscope enable us to see smaller objects such as cells and organisms.
Answer:
Point C
Explanation:
Point C has the greatest potential energy because it is at that point that the riders will have maximum height
Answer: The first steps
Explanation: science
A lipid<span> is an organic compound such as </span>fat<span> or oil. Organisms use </span>lipids<span> to store energy, but </span>lipids<span> have other important roles as well. </span>Lipids<span> consist of </span>repeating units<span> called </span>fatty acids<span>. There are two types of </span>fatty acids<span>: </span>saturated fatty acids<span> and</span><span>unsaturated fatty acids</span>
