Covalent bonds and it is between the hydrogens (hydrogen bonds)
Answer:
the correct answer is D Elements
Answer : There are many ways to use electric current, but as you have asked for only three, here are some of them along with the change in their energy transformations;
1) Using a light bulb which consumes electrical energy and the energy is transformed into light energy, making everything visible for us.
2) Using a power tool makes use of electrical energy and the energy is transformed into mechanical energy for multipurpose use of cutting woods.
3)
Using electrical iron converts electrical energy into thermal energy to heat the iron and enables the user to iron crease-free clothes.
Answer:
Carbon flows between the atmosphere, land, and ocean in a cycle that ... Coal and other fossil fuels are a convenient source of energy, but when ... If carbon dioxide rises in the atmosphere because of an increase in ... However, the slow carbon cycle also contains a slightly faster component: the ocean.
Explanation:
I got you fam
Answers:
G. -; H. -; I. +
Step-by-step explanation:
ΔE = q + w
Anything going into the system is positive (+), and anything leaving the system is negative (-).
G. Cooling with expansion
q: Heat is leaving; q is -
w: The system is doing work on the surroundings. Energy is leaving the system. w is -.
ΔE is -.
H. Heating a little, expanding a lot
q: Heat is entering; q is +.
w: The system is doing work on the surroundings. Energy is leaving the system. w is -.
However, the expansion work is the major factor.
ΔE ≈ w. ΔE is -.
I. Endothermic, no expansion
q: Heat is entering; q is +.
w: No expansion. w = 0.
ΔE = q. ΔE is +.
