Describe the mass of the reactants and products given the balanced chemical reaction below. 16Al + 3S8 = 8Al2S3

A. The mass of the products is 2/3 that of the reactants.
B. The mass of the reactants equals the mass of the product.
C. The mass of the reactants is less than the mass of the product.
D. The mass of the reactants is greater than the mass of the product.

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The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.