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Consider a piece of gold jewelry that weighs 9.85g and has a volume of 0.6cm^3 . The jewelry contains only gold and silver, which have densities of 19.3g/cm^3 and 10.5g/cm^3 , respectively. If the total volume of the jewelry is the sum of the volumes of the gold and silver that it contains, calculate the percentage of gold (by mass) in the jewelry.
a gas sample occupies 4.20 l under a pressure of 800 torr at 350K.At what temperature will it occupy 3.60 L at the same pressure?
If 32 mL of 6.8 M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid ?
How many grams of aluminum chromate are produced from 66.4 grams of aluminum hydroxide?
What happened when 6.0M HCl was added to the contents of the tube in 7a above?
Brass is a copper and zinc alloy containing 31.8% zinc by mass and having a density of 8.73 {\rm \frac{g}{cm^3}}. A fitting composed of common brass has a total volume of 335.6 {\rm cm^3}
Silicon Carbide is a hard substance used as an abrasive. it is prepared by heating SiO2 and carbon at high temperatures SiO2 + 3C = SiC + 2 CO determine the limiting and excess reactant.
Find the volume of a molar solution and What volume of a 2.00 molar solution of sulfuric acid, H 2 SO 4 , is required to react with 250.0g of magnesium carbonate, MgCO 3 , according to the following equation?
What is the theoretical yield of bromobenzene in this reaction when 33.0 g of benzene reacts with 71.5 g of bromine?
This strontium isotope is radioactive, with a half-life of 28.1 yr. Calculate how long it will take for 0.860 g of the isotope to be reduced to 0.170 g by decay
What is the pressure (in atm) inside a container of gas connected to a mercury filled open-end manometer when the level in the arm connected to the container is 28.3cm higher than the level in the arm open to the atmosphere,
If 25.6 L of NO2 forms, measured at 35°C and 605 mm Hg, what is the percent yield?
Calculate the Ksp for zinc phosphate if 1.18 10-4 g of zinc phosphate dissolved to make 5.0 L of a saturated solution.
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