She sees that the cells are joined together, so she knows that they are from one organism. She also sees that all of them have cell walls. what could Rosa could be looking at:

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

If 90.0 grams of ethane reacted with excess chlorine, how many grams of dicarbon hexachloride would form

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.)