All of the following are agents of mechanical weathering except wind temperature water gravity

The correct option here is d

Explanation:

Weathering can simply be defined as the breakdown or decomposition of rocks. There are two types of weathering namely

Mechanical weathering is the gradual breakdown of rocks into simpler pieces by physical agents such as water, wind, temperature and biological activities. Gravity does not affect weathering (both mechanical or chemical) because it is a force (constant) on earth that is not directly involved in any form of wear and tear.

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