Elements for NaC1 (5)

A chemist wants to make 5.5 L of a 0.250 M CaCl2 solution, find the mass

If the first set of reactants is NH4OH and KAl (SO4) 2 and the second set of reactants is MgSO4 and NH4OH, is either reaction considered a synthesis reaction as labeled in the laboratory? Why or why not?

When layered into a single column, which water will sink to the bottom? A. cold water with no salt B. warm water with no salt C. warm, salty water D. cold, salty water

Trace the energy transformations from a hamburger you eat to riding a bike

Mercury can be obtained by reacting mercury (II) sulfide with calcium oxide. How many grams of calcium oxide are needed to produce 36.0 g of Hg? 4HgS (s) + 4CaO (s) ® 4Hg (l) + 3CaS (s) + CaSO4

A baker touches a pie right after taking it out that of me which statement best explains why the pie feels hot

A scientist discovers a new type of polymer. What must be true about this polymer? A. It contains carbon atoms arranged in a ring structure. B. It has double bonds between all the carbon atoms. C. It contains molecules of many different types. D.

A line in the lyman series of hydrogen has a wavelength of 122 nm. from what state did the electron originate?

What are the products of photosynthesis? A. Glucose and oxygen B. Oxygen, solar energy, and glucose C. Carbon dioxide, water, and solar energy D. Hydrogen, oxygen, and carbon

A sample of a substance that has a density of 0.824 g/mL has a mass of 0.421 g. Calculate the volume of the sample.