_Na2SO4 + __ BaCl2 → ___ NaCl + _ BaSO4 Balance the equation above. How many grams of BaSO4 can be made if 7.1g of Na2SO4 and 10.4g of BaCl2 are combined? BaSO4 = 233g/mol
and Na2SO4 = 142g/mol and BaCl2 = 208g/mol (This s a limiting reactant problem and you must show all the steps used to get to your answer)

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.

the answers would be

the first one and the second one

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.

more infor would

a lot