Using the lab data below, calculate the empirical formula of a compound of zinc and chlorine. Data
Mass of empty dish and watch glass __134.1035 g

Mass of dish, watch glass + zinc __145.2650g

Mass of dry, leftover zinc __10.3070 g

Mass of dish, watch glass + zinc chloride ___135.8918 g

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

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.)