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Phosphorus-32 has a half-life of 14.0 days. Starting with 4.00 g of 32P, how many grams will remain after 98.0 days ?Express your answer numerically in grams.
a 3.23 gram sample of a sodium bicarbonate mixture was reacted with excess acid. 48.52 ml of the evolved gas was
A room temperature aqueous solution is 0.10 M in zinc acetate, 0.50 M in strontium acetate and 15.2 M in nickel (II) acetate. At what concentration of carbonate
a sample of n2o4g is placed in an empty cylinder at 25oc. after equilibrium is reached the total pressure is 1.5 atm
Determine the lime (CaO) and soda ash (Na2CO3) dose, mg/L as CaCO3, to soften the following water to a final hardness of 90.0 mg/L as CaCO3. Assume the lime is 90% pure and the soda ash is 97% pure.
A Solution was analyzed using AA spectroscopy for Au. The signal registered was 150. The sample solution was placed in a 10ml container and spiked with 2ml of a 0.125mM standard Au solution. The spiked solution returned a AA signal of 185. What wa..
What is the volume of this ideal gas in liters?
Calculate the volume of O2 at STP required for the complete combustion of 4.23 L of acetylene (C2H2) at STP.
If the reaction is first order in A and second order in B, what is the rate when the initial concentration of A = 2.30 mol/L and that of B = 2.03 mol/L
A flask contains 14.182 grams of nitrogen monoxide (NO), 19.628 g of (CO2), and 29.543 g of (SO3). The total pressure in the flask is measured to be 35.9 at,. What is the partial pressure of sulfur trioxide in the flask
Problem- The half life for a given FIRST ORDER reaction is determined to be 2.5 min. What is the concentration of the reactant remaining after 7.0 minutes if the initial concentration of A is 2.4 M
Two students are debating whether methanol, CH3OH(l), or propanol, C3H7OH(l), is the better fuel. One student states that methanol produces more heat than an equal mass of propanol.
If it requires 41.95 mL of 0.0205 M KMnO4 to titrate a solution made with 0.6128 g of iron ore, what percentage of the ore was iron
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