Free response about sig figs
Free response about sig figs
Here are the conversion factors.. (1lb = 454 g, 1 ft = 12 in, 1 in = 2.54 cm, 1cm^3 = 1mL) 0.0420 lbs/ft^3 (454g/1lb)(1^3 ft^3/12^3 in^3)(1^3 in ^3/2.54^3 cm^3)(1^3 cm^3/...
If you dilute 20.0 mL of the stock solution to a final volume of 0.300 L , what will be the concentration of the diluted solution?
If 3.30g of Cu(NO3)2 is obtained from allowing 1.86g of Cu to react with excess HNO3, what is the percent yield of the reaction? Write the balanced equation.
What mass of citric acid, C(OH)(COOH)(CH2COOH)2 , (which contains three acidic protons) is required to neutralize the spill? 1 gallon = 3.785 L . Express your answer to two significant figures...
Calculate the molarity of a solution prepared by dissolving 12.6 g of Na2CrO4 in enough water to produce a solution with a volume of 640. mL . Express the molarity to three significant digits...
it was asked in exam and i was not able to answer it
How many milliliters of 0.125 M H2SO4 are needed to neutralize 0.250 g of NaOH ? Express the volume in milliliters to three significant digits.
If 55.6 mL of BaCl2 solution is needed to precipitate all the sulfate ion in a 742 mg sample of Na2SO4 , what is the molarity of the solution? Express the molarity to three significant digits...
If 42.2 mL of 0.206 M HCl solution is needed to neutralize a solution of Ca(OH)2 , how many grams of Ca(OH)2 must be in the solution? Express the mass in grams to three significant...
Tin(II) ions react with periodate ions in acid medium to give iodide and tin (IV) ions. Twenty-five mL of a 0.250 M solution of tin(II) nitrate react with 45.00 mL of 0.100 M solution of sodium periodate...
How many moles of KBr are present in 200. mL of a 0.111 M solution? Express the amount in moles to three significant digits.
How many milliliters of 5.3 M HCl solution are needed to obtain 0.17 mol of HCl ? Express the volume in milliliters to two significant digits.
How many milliliters of a stock solution of 5.00 M HNO3 would you have to use to prepare 0.120 L of 0.470 M HNO3 ?
How many milliliters of 0.130 M HCl are needed to completely neutralize 54.0 mL of 0.101 M Ba(OH)2 solution? Express the volume in milliliters to three significant digits...
A glass of milk has 30% of daily requirement of calcium what is the weight of vacuum needed per day in milligrams if each glass of milk contain 280mg of calcium?
How many grams of chlorine has would be produced is 250 mL of 2.00M HCl was mixed with an excess of bleach, according to the equation below? NaClO (aq) + HCl (aq) => Cl2...
Na + Al+3 => Al + Na + ox: (Na => Na+ + e-) *3 red: Al+3 + 3e- => Al Al+3 + Na =. Al + 3Na+ please...
What is simplest formula for a molecule of this compound? Available options: AsC4H7 As2C3H9 AsC3H9 As2C6H...
Which amount has the greatest mass? Ar At As Ac Au