Aballoon is a sphere with a radius of 5.0 m. the force of air against the walls of the balloon is 45 n. what is the air pressure inside the balloon? (surface area = 12.56 x radius^2; 1 pa = 1 n/m^2)

a. 1.4 x 10^3 pa

b. 3.6 x 10^2 pa

c. 1.4 x 10^-1 pa

d. 3.6 x 10^-2 pa

***idk how to solve pls explain? ? thx : )

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

l dont know l am s sorry