AlBr3 + K2SO4à KBr + Al2(SO4)3 What are the two reactants in this chemical reaction?

a
AlBr3

b
KBr

c
Al2(SO4)3

d
K2SO4

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

How many moles of co2 are produced during the complete combustion of 3.6 moles of c2h6