What is the main difference between the alpine tundra and the arctic tundra? a. the alpine tundra includes trees. b. the alpine tundra occurs on mountaintops. c. the alpine tundra has no animal life. d. the alpine tundra has lower temperatures.

The answer is:

B. The alpine tundra occurs on mountain tops.

If you'd like to know why:

Alpine tundra biomes are found in mountain tops, and the altitude is the reason why it is cold. Another difference between these two tundra biomes is the lack of permafrost in Alpine tundra. This allows Alpine tundra to have more plant variations than Arctic tundra but trees do not grow in Alpine tundra.

Knocking out the other choices though, there are many well-adapted animals in Alpine tundras, they do not have lower temperatures, and as mentioned before, trees cannot grow in the Alpine Tundra biomes.

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g