a 1.9 kg block of iron at 22c is rapidly heated by a torch such that 16kJ is transferred to it. what temperature would the block of iron reach (assuming the complete transfer of heat and no loss to the surroundings). if that same amount of heat (16kJ) was quickly transferred to a 860 g pallet of copper at 27°C what temperature with the copper reach before it begins losing heat to the surroundings? Use the equation for heat capacity in the following heat capacity values:

hm

Explanation:

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

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa