Answer:
C is the answer
Explanation:
Heat energy is transformed into electrical energy.
Answer:
69,632 grams
explanation
number of molecules =mass\molemass
nh3 14 +2×3=20
3.4×1024=m/20
cross multiply
grams =69,632
The appropriate answer is d. recording and studying seismic waves. Seismic waves behave differently as the enter the different layers of the Earth. Scientists used seismic or earthquake waves to determine the different layers of the Earth. The behaviour of the waves as they move through the layers helped scientists identify the boundaries and the state of each layer; solid or liquid.
Isotopes of the same element have different mass numbers.
C. mass numbers.
one mole of copper has 6.02 x 10²³ atoms
C. 6.02 * 10²³ atoms.
Answer:
See explanation and image attached
Explanation:
Here attached are resonance forms of pyrrole and pyridine. The images were obtained from quora and researchgate respectively.
Now, we can see that in the resonance forms of pyrrole, the nitrogen atom in the heterocycle has a formal charge of +1. However, in the six membered pyridine hetrocycle, the nitrogen atom may have a formal charge of -1 or +1 as shown in the canonical structures attached. The structures in which nitrogen has a +1 formal charge in pyridine are comparable to structures obtained from pyrrole. These structures have less contribution to the structure of pyridine.