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100 tons of hard lead (98%Pb, 2%Sb) are melted in a steel kettle and then treated with 2 tons of PbO. The products are (1) a slag consisting of PbO and Sb2O3, analyzing 20%Sb, (2) a Pb- Sb alloy of
What is the theoretical yield of carbon dioxide when 56.0 g of methane is burned in a excess of oxygen, according to the equation CH4 2 )2 arrow CO2 2 H2o
Consider the reaction of 5.0 moles of CS2 and 3.0 moles of NaOH according to the following reaction. Calculate the number of moles of Na2CS3, which will be produced after the reaction is completed
Two packing crates of masses m1 = 10.0 kg and m2 = 5.50 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 5.50 kg crate lies on a smooth incline o
The longest recorded pass in an NFL game traveled 81 yards in the air from the quarterback to the receiver.Assuming that the pass was thrown at the optimal 45 angle, what was the speed at which the
When NaHCO3 is heated above 270 degrees Celsius, it decomposes to Na2CO2, H2O, and CO2. Calculate mass of CO2 produced from the decomposition of 59.0g of NaHCO3.
A copper-bottomed kettle, its bottom 24 in diameter and 3.0 thick, sits on a burner. The kettle holds boiling water, and energy flows into the water from the kettle bottom at 800. What is the tempe
The following quantities of these trace gases were found in a 1.0 gallon sample of air. Calculate number of moles of each gas in the sample:
A 14.0 ice cube is placed into 308 of water. Calculate the tempturature change
Calculate the maximum numbers of moles and grams of iodic acid (HIO3) that can form when 635g of iodine trichloride reacts with 118.5g of water. 2ICl3 + 3H2O --> ICL + HIO3 + 5HCl.
If 2.00 mol of H2 and 1.00 mol I2 are placed in a 2.00 L flask and allowed to reach equilibrium, calculate the concentration of all reactants and products. & ;
Ascorbic acid is often used to keep dried fruits from browning. From what you have learned by doing the experiment, how can you explain the ability of ascorbic acid to function the bleaching agent?
Two crewman pull a raft through a lock, one crewman pulls with a force of 130 newtons at an angle of 34 degrees, the other pulls pulls at an angle of 45 degrees, with what force must the second crew
What is the mechanism for the formation of benzoic acid as a result of acetophenone and clorox reacting together?
Calculate the grams of NaOH present in 6.5 mL of a 6.0% (m/v) NaOH
An electric motor rotating a workshop grinding wheel at a rate of 85 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.20 rad/s2
The other contains the indicator phenol red, which turns red in strongly basic aqueous solutions but is otherwise yellow. Which of these steps would cause a color change in both solutions?
A wooden rod of negligible mass and length 82.0 is pivoted about a horizontal axis through its center. A white rat with mass 0.550 clings to one end of the stick, and a mouse with mass 0.170 clings
The smallest atoms can themselves exhibit quantum behavior. Calculate the de Broglie wavelength of a hydrogen atom traveling 455 m/s.
Find the Qsp when 9 drops of 0.014 M Na2CO3(aq) are added to 25 mL of 0.003 M AgNO3(aq). The solubility product of Ag2CO3 is 6.2 × 10-12. Assume 20 drops per milliliter. Determine whether a prec
A 130g piece of metal is heated to 286C and dropped into 87.0g of water at 26C, if the final temperature of the water is 58.3C, what is the specific heat of the metal (J/gC).
the feed to reactor contains only ethylene and hydrogen bromide. if the molar flow rate is 165mol/s, calculate the fractional conversion of the limiting reactant?
What is the density of gallium in grams per cubic centimeter at 25 if a 1.00 cube has a mass of 0.2133 ?
How does the addition of Fe(NO3)3 affect the concentration of FeSCN ion? What effect does the addition of Fe(NO3)3 solution have on the concentration of FeSCN?
Identify the spectator ion(s) in the following equation: HCl(aq) + Li2CO3(aq) → LiHCO3(aq) + LiCl(aq)