Answer:
A. Na2SO4 + BaCl2 ----> BaSO4(solid, white) +2NaCl doublr replacement reaction
B. MnO2 + 4HCl ----> MnCl2 + 2H2O + Cl2 (gas) decomposition
C. CuSO4 + Fe ---> FeSO4 + Cu single replacement reaction
Answer:
A substance that can not be separated into any kinds of matter
Explanation:
19. D
20. Sorry don’t know but if I had to guess it would be B
21. A because fluorine has a higher electronegativity
22. D
23. B
24. Again don’t really know but I would guess D
25. A
Answer:
A very large amount of energy
is produced from a very small mass.
Background Info:
Nuclear fission is the process of splitting apart nuclei (usually large nuclei). When large nuclei, such as uranium-235, fissions, energy is released. So much energy is released that there is a measurable decrease in mass, from the mass-energy equivalence. This means that some of the mass is converted to energy.
Answer:
Solar Energy.
Explanation:
There is more solar radiation hitting their surface, which means they can produce more electricity. Solar energy is more valuable in places with expensive electricity. If two solar panel systems in different cities have the same energy output, savings will be greater in the city with the highest kWh prices.