Percent composition of sand in the mixture
A mixture of sand and iron pieces weighs 53.29 g. Using a magnet, the iron is removed and weighs 15.63 g. What is the percent composition of sand in the mixture?
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A solution is prepared by adding 0.500 g of solid rm NaCl to 50.0 mL of 0.100 M rm {CaCl_2}. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.
Determine the average rate of change of B from t=0 s to t=232 s
What radius of sphere will give the most volume of ice cream inside the cone (as opposed to above the cone) for a cone of base angle 30 degrees? What percent of this sphere of most volume lies inside the cone?
what is the mole fraction of hydrogen in a gaseous mixture that consists of 8.00 g of hydrogen and 12.00 g of neon in a 3.5 liter container maintained at 35.20 degrees celsius?
A chemical reaction is run in which 463 Joules of work is done by the system and the internal energy changes by -1027 Joules. Calculate the amount of heat transferred
Calculate the force required in direct extrusion of 1100-O aluminum from a diameter of 6 in. to 2 in. Assume that the redundant work is 30% of the ideal work of deformation, and the friction work is 25% of the total work of deformation.
Draw the best Lewis structure for N2O by filling in the bonds, lone pairs, and formal charges.
A buffer solution was made using an unspecified amount of acetic acid and 0.30 mol of NaC2H3O2 in enough water to make 1.50 L of solution. Its pH was measured as 4.50 on a meter. How many moles of HC2H3O2 were used?
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