Which type of radiation is the smallest in size?
alpha radiation
beta radiation
gamma radiation
positron radiation

C) gamma radiation

Explanation:

There are three major types of particles emitted during a radioactive decay. These include: alpha, beta and gamma particles. Positrons are essentially positively charged beta particles

Alpha particles tend to be slow moving and heavy. Beta particles are similar to electrons while gamma particles are the lightest, fast moving and highly penetrating.

h

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