Calculate the theoretical mass
Calculate the theoretical mass of Ca^2+ ion in one tablet in grams if there is 750 mg CaCO3 and 320mg Calcium per tablet. The tablet weight 1.801 grams.
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Using the periodic table, predict thr most stable ion for Na, Mg, Al, S, Cl, K, Ca, and Ga. Arrange these ions from largest to smallest radius and explain.
If 1 gallon of paint can cover a square room and ceiling with walls that are 9.36 feet high and 9.36 long, what is the thickness of the paint (in micrometers)?
A 0.24-kg ball is suspended from a string 9.79 m long and is pulled slightly to the left. As the ball swings through the lowest part of its motion it encounters a spring attached to the wall.
A 0.500 g sample of this oxide is decomposed, forming 0.444 g of copper metal. What is the empirical formula of the gold oxide?
An 85.0g sample of iron requires 954 J of heat to raise its temperature 25.0C. What is the specific heat of the iron?
How many molecules of carbon dioxide are produced when 134 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water?
If 69.5 kJ of heat is applied to a 1040. g block of metal, the temperature of the metal increases by 11.4°C. Calculate the specific heat capacity of the metal in J/g°C.
How many grams of CH4 must be burned to release 490 kJ of heat based on this thermochemical equation:CH4 + 2 O2 --> CO2 + 2 H2O Delta H rxn = -802.3 kJ.
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