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Question: What is the molar concentration of 20.0 mL of an aqueous solution of HCl that requires 32.0 mL of 0.0260 M solution of NaOH for complete neutralization?
A student mixed 5.00 mL of a nickel(2) chloride solution with 5.00 mL of .100M sodium phosphate and a precipitate formed. How many moles of sodium phospahte were present in 5.00 mL of the solution?
suppose a 500 ml solution contains 1.00 mmol of co(no3)2, 100 mmol of NH3, and 100 mmol of ethylenediamine. what is the concentration of co2+ in the solution?
they condense and then revaporize. During which of these steps is the concentration of the more volatile compound of the mixture increased?
Name the two types of nucleic acids and where each is found in the cell. Also include the four bases particular to each nucleic acid.
Will the temperature of the water be greater than or less than 20 C when thermal equilibrium is reached? Calculate the final temperature
When ethanol burns C2H5OH + 3O2 ==> 2CO2 + 3H2O , how many moles of water are produced as 48.380 moles of carbon dioxide are produced.
A hydrogen-filled balloon was ignited and 2.00 gram of hyrdogen reacted with 16.0 g of oxygen. How many grams of water vapor were formed?
How much heat is needed in kJ to convert 878 g of ice at -10°C to steam at 134°C? (The specific heats of ice, steam, and liquid are 2.03 J/g · °C, 1.99 J/g · °C, and 4.18 J/g·°C, respectively. The heat of fusion is 6.02 kJ/mol and heat of vaporiza..
What mass of oxygen is needed to burn the butane in the lighter completely. How many moles of CO2 form when all of the butane is the lighter burns. How many molecules of gas form when the butane in the lighter burns completely.
The atomic mass of element X is 29.42 amu. A 33.22 g sample of X combines with 92.10 g of another element, Y to form a compound XY, Calculate the atomic mass of Y.
what is the density in g/cm^3 units of a solution that has a net mass of 54.8 g and occupies a 0.050 L volume. please show your work step by step, use the correct number of significant figures and units.
Ice cream mix containing 40% total solids is frozen so that half of the original water is made into ice (which is effectively pure water). If the mix contained 12% fat, 16% sugar, and 12% nonfat milk solids
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