Which statement accurately describes test tubes and beakers? A. Beakers and test tubes both have rounded bottoms.

B. Test tubes are better for transferring liquids than beakers.

C. Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.

D. Beakers can be held over a flame; test tubes cannot.

Bohr's model could only explain the spectra of which type of atoms? single atoms with one electron single atoms with more than one electron bonded atoms with one electron bonded atoms with more than one electron

Connect the whole numbers on the periodic table to indicate what they represent?

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.)