Huan made a chart to study for an exam about radio waves. A 2-column table with 1 row. Column 1 is labeled X with entries Changes the frequency of a wave; Is used by cell phones to transmit data. Column 2 is labeled Y with entries Changes the height of a wave; Is used by television stations for pictures.

Which headings best complete the chart?

X: Phase
Y: Pulse
X: Pulse
Y: Phase
X: AM
Y: FM
X: FM
Y: AM

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

plasma - state of matter made up of electrically charged particles