Al+ O2~Al2O3 1.)6 moles of Al react with 7 moles of O2. What is the limiting reactant? What is in excess?
2.)2.5 moles of Al reacts with 1.5 moles of O2. What is the limiting reactant? What is in excess?
3)9 moles of Al react with 11 moles of O2. How many grams of excess do you have?
4.)Using the liimiting reactant determined in number 3, how many grams of product are formed

2.00 is the !

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

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

The answer is a) carbon-12

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.