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Assume a gasoline is isooctane, which has a density of 0.692 g/mL. What is the mass of 2.5 gal of the gasoline (1 gal = 3.78 L)? Answer in units of kg.
A 25.00mL sample of NaClO is titrated with 0.001005M HNO3. If 10.02mL of of HNO3 is required to reach the endpoint of titration, determine the concentration of ClO- in the original sample.
A 15.0 grams lead ball at 25.0 celcius ws heated with 40.5 Joules of heat. Given the specifc heat of lead is 0.128 J/ grams. celsius, what is the final temperature of the lead?
Nickel nitrate and potassium carbonate react to form nickel carbonate and potassium nitrate. How many milliliters of 0.55M Ni(NO3)¬2 are needed to react with 85 mL of 0.25M K2CO3? First, write
when 0.273-gm of Mg is reacted at high temperatures with N2 to produce 0.378-gm of a solid, MgxNy. Calculate the empirical formula of the product.
Does the NaOH dissociate into ions when it is added to the solution? What do the OH- ions react with? What molecule is available to provide more hydrogens and keep the pH stable.
C6H6 + Br2 → C6H5Br + HBr a) What is the theoretical yield of bromobenzene in this reaction when 30.0 g of benzene reacts with 65.0 g of bromine? b) If the actual yield of bromobenzene was 56.7
a sample of calcium carbonate abosorbs 45.5 J of heat, upon which the tempterature of the sample increases from 21.1 degrees of C to 28.5 degrees of C. What is the specific heat of calcium carbonate
0.1278- sample that is 97.50% As2O3 by mass had been used in the titration, how many milliliters of the 0.02140M KMnO4(aq) would have been required?
According to the following reaction, how many moles of calcium oxide will be formed upon the complete reaction of 22.7 grams of calcium carbonate?
How long would it take a radio wave whose frequency is 7.25 times 10 to the 5th power Hz to travel from planet Mars to Earth if the distance between the two planets is approximately 8.00 times 10 to
What is the total pressure in mmHg of the mixture after it is placed in a container one-half the volume of the original container?
Ammonia burns in pure oxygen and reaction produces nitrogen and water. What is the amount of Nitrogen produced from 45.0 g NH3?
Calculate the molarity of a solution made by dissolving 0.150 mol Na2SO4 in enough water to form exactly 760 mL of solution
On the average, it required 29.5 mL of the base to neutralize the acid in the one tablet. How many mg of Vitamin C are there in one tablet?
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.704 grams of iron and 12.6 mL of 0.581M copper(II) sulfate react to form as much product as possible, how many millimoles (mmol) o
A compound contains 43.64% P with the remainder being oxygen. What is the empirical formula of the compound?
If 1.0 mL of vinegar needs 22.5 mL of 0.195 M NaOH to reach the equivalence point in the titration, what is the molarity of the original vinegar solution?
Do you think a comparable spill of a water-insoluble liquid that has a density of 1.20 g/mL would have been as harmful to waterfowl and aquatic mammals, assuming that the toxicity of the liquid was
Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
What is the theoretical yield (in grams) of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium.
What mass of NaHCO3 would be required to neutralize this acid spill through the following reaction HCO3 + H => H2O +CO2
If the syringe volume had been incorrectly read, given a calculated system volume of 25.6 mL, what would have been the percent error in the calculated value of R
What mass of PbCl2 is formed from mixing 0.334 L of 0.112 molar NaCl with 2.12 L of 0.0343 molar Pb(NO3)2?