A)
mass(KCl)= 25 g
mass(solvent)= 125 g
mass of solution = 25.0+125.0 = 150.0 g
use:
mass% = mass of KCl *100 / mass of solution
= 25*100/150
= 16.67 %
Answer: 17 %
B)
mass(sugar)= 15 g
mass(total)= 300 g
use:
mass% = mass of sugar *100 / total mass
= 15*100/300
= 5.0 %
Answer: 5.0 %
c)
mass(CaCl2)= 9.0 g
mass(total)= 60.0 g
use:
mass% = mass of CaCl2 *100 / total mass
= 9.0*100/60
= 15 %
Answer: 15 %
Calculate the mass percent, % (m/m), for the solute in each of the following solutions. We...
Calculate the mass percent, % (m/m), for the solute in each of the following solutions. A.) 13 g of sugar in 225 g of tea with sugar (solution) B.) 9.0 g of CaCl2 in 85.0 g of CaCl2 solution Express your answer using two significant figures.
. Calculate the concentration of the following solutions: a. mass percent (m/m) for the solute: 75 g of Na2SO4 and 175 g of H2O b. mass/volume percent (m/v) for the solute: 54 g of KCl in 325 mL of KCl solution
Calculate the mass/volume percent, % (m/v) for the solute in each of the following solutions. 70 g of Na2SO4 in 250 mL of Na2SO4 solution? 37 g of sucrose in 335 mL of a carbonated drink?
Calculate the mass percent, % (m/m), for the solute in each of the following solutions. PART A - 23 g of KCl and 200 g of H2O Express your answer using two significant figures. PART B - 15 g of sugar in 275 g of tea with sugar (solution) Express your answer using two significant figures. PART C - 6.5 g of CaCl2 in 60.0 g of CaCl2 solution Express your answer using two significant figures.
Calculate the mass percent of solute in the following solutions a. 6.50 g of Naci e of NaCl dissolved in 85.0 g of H₂O
Calculate the percent by mass of solute in each of the following solutions. a 2.05 g of potassium chloride dissolved in 14.4 g of water Percent by mass = %KCI b 2.05 g of potassium chloride dissolved in 16.8 g of water Percent by mass = % KCI C 2.05 g of potassium chloride dissolved in 36.5 g of water Percent by mass = % KC1 d 2.05 g of potassium chloride dissolved in 45.1 g of water Percent by...
Calculate the percent by mass of solute in each of the following solutions. (a) 1.28 g of potassium chloride dissolved in 12.5 g of water % (b) 1.28 g of potassium chloride dissolved in 25.0 g of water (c) 1.28 g of potassium chloride dissolved in 37.5 g of water % (d) 1.28 g of potassium chloride dissolved in 50.0 g of water %
Calculate the mass percent of solute in the following solutions 3.17 g KCl dissolved in 51.1 g H20 Number 0 28.1 g KNOa dissolved in 908 g H20 Number
A block of mass m is attached by means of a spring of constant
to a wedge of mass
and height
that forms an angle
with the horizontal, as shown in the figure. Mass
can slide on the horizontal surface. Note: don't consider
friction.
a) Calculate the frequencies of small oscillations of the system
around equilibrium.
b) Find and schematically draw the relative configurations of the
normal modes corresponding to each frequency of the system.
We were unable to transcribe...
Calculate the mass percent of solute in each solution. Calculate the mass percent of 2.77g KCl dissolved in 46.1 g H₂O. Calculate the mass percent of 25.9 g KNO₃ dissolved in 823 g H₂O.