For each of the following unbalanced reactions, sup- pose exactly 5.00 g of each reactant is taken. Deter-
mine which reactant is limiting, and also determine
what mass of the excess reagent will remain after the
limiting reactant is consumed.
a. Na, B,0,(s) + H2SO.(aq) + H2O(l) →
H_BO3(s) + Na2SO.(aq)
b. CaCz(s) + H2O(l) + Ca(OH)2(s) + C2Hz(8)
c. NaCl(s) + H2SO.(I) → HCI(3) + Na 50 (5)
d. SiO,(s) + C(s) + Si(l) + CO(3)

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

Consider the following unbalanced equation for the combustion of hexane: αc6h14(g)+βo2(g)→γco2(g)+δh2o(g) part a balance the equation. give your answer as an ordered set of numbers α, β, γ, use the least possible integers for the coefficients. α α , β, γ, δ = nothing request answer part b determine how many moles of o2 are required to react completely with 5.6 moles c6h14. express your answer using two significant figures. n n = nothing mol request answer provide feedback

When a beta particle is emitted, the mass number of the nucleus a. decreases by one b. increases by one c. remains the same d. decreases by two