PLEASE HELP 1) According to the image, how is visible light different from gamma rays?
2) The wavy line at the top of the diagram represents the frequency of the waves. Waves that have a higher
frequency are closer together. How is the frequency of electromagnetic waves related to wavelength and
energy?
visible spectrum

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

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

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;