In most elements the valence shell holds a maximum of how many electrons

You need to make 500.0 mL of a 2.2 M solution of K SO, How many grams of K SO, do you need?

Choose the appropriate descriptor for the term gram per centimeter cubed Mass area volume density

How could you test to see if an enzyme was completely saturated during an experiment?

A particular voltaic cell operates with the reaction: Zn (s) + Cl2 (g) - -->Zn^2 + (aq) + 2Cl^ - (aq) giving a cell potential of. 853 V. Calculate the amount of energy liberated from the cell when 20.0g of zinc metal is consumed?

Where does most of the mass of an atom come from?

Foods labeled "fat free" can actually contain less than 0.5 grams of fat.

Plants make their own food. The chemical reaction for this process is shown in the equation below. CO2 + H2O + energy → C6H1206 + O2 What are the products in this chemical reaction? O A. C6H1206 + energy O B. H20 + energy O C. CoH1206+02 O D.

Using ohm's law, explain how voltage changes in relation to current, assuming that resistance remains constant.

An average copper penny minted in the 1960s contained about 3.000 g of copper. how much chalcopyrite had be mined to produce 100 pennies?

Which pack has the greatest change in enthalpy, warm packs (such as hand warmers) or cold packs (such as an ice pack) ?