Grade 5 Questions 1. How many moles are there in a 5g
sample of sodium chloride, NaCl?
2. Which has the highest number of moles,
5g of Cucl, or 8g of Cuso,?
3. A student made 8.6g of ammonium
chloride, NHCI, how many moles did
they make?
4. Propane (C2Hg) and butane (CH) are
both used as fuels. If I burnt 500g of
each, which one would I have used up
the most number of moles?
5. A very old bottle of wine was opened and
was found to contain 96g of ethanoic
acid, C, H,O,, how many moles of this
acidic substance were found in the
bottle?

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?