Chemistry Answers

1. By what mass (in grams) will a chromium cathode increase when it is coupled to a magnesium half-cell in which the magnesium anode loses 1.53 grams? (assuming chromium ions in solution are Cr3+).

To prevent dehydration, intravenous (IV) solution is given to hospital patients. Commonly used are solutions containing sodium chloride and glucose. A 150.0-mL IV solution contains 6.60 grams of glucose (CHO). What is the molarity of this solution? The molar mass of glucose is 180.16 g/mol.

A certain ion X3+ contains 24 electrons and 32 neutrons. The chemical symbol and the mass number of this ion are:

Write the balanced NET ionic equation for the reaction when Pb(NO₃)₂ and KI are mixed in aqueous solution. If no reaction occurs, simply write only NR.

if the volume of confined gas is doubled while the temperature remains constant, what change would be observed in the pressure?

Give two examples of alloys along with their compositions and uses

If 8.28 L of hydrogen gas at SATP is produced, how many moles of aluminium were reacted?

The volume of a sample of a gas is 8.39 L at 33oC. What would be the volume if the temperature is changed to 265 K, while the pressure is constant?