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Write a balanced equation for the reaction between the following. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.) aluminum and sulfuric acid.
One mole of air at 350 K confined in a cylinder under a heavy piston occupies a volume of 6.1 L. The heat capacity of air under constant volume is (5/2)R. Find the new volume of the gas if 3.9 kJ i
Measurements show that unknown compound X has the following composition: Write the empirical chemical formula of X
At the end of the firing period, the craft has velocity components of vx = 3835 m/s and vy = 4748 m/s. Find the magnitude and direction of the initial velocity. Express the direction as an angle wit
The Henry's Law constant of methyl bromide, CH3 Br, is k = 0 .159 mol/(L a tm) at 25C. What is the solubility of methyl bromide in water at 25 C and at a partial pressure of 250 mm Hg
What mass of magnesium chloride is needed to react with 145 g of silber nitrate accourding to the following reaction: MgCL2(aq)+2AgNO3(aq) -> MG(NO3)2(aq) + 2AgCL
A 55.0 kg girl weighs herself by standing on a scale in an elevator. What is the force exerted by the scale when the elevator is descending at a constant speed of 10 m/s?
If 100ml of NaCl is added to 200ml of solution containing 0.005M AgNO3 and 0.10M Pb(NO)3 does a precipitate form? If one forms, what compound(s) does this solution contain?
What volume of N2 gas (measured at STP) would result from the reaction of 1500 kg of hydrazine and 1000 kg of N2O4?
Calculate the pH of a buffer solution with .10 moles of C2H5COOH and .13 moles of C2H5COONa in 1.5L
A rifle with a barrel length of 56cm fires a 12g bullet with a horizontal speed of 350m/s . The bullet strikes a block of wood and penetrates to a depth of 10cm. what force does the block put on the
A pure gas sample at room temperature (25 C) has an average molecular speed of 682 m/s. What is the identity of the gas?
53.0 ml of of 1.50 M solution is diluted to a volume of 268 ml. A 134 ml portion of that solution is diluted using 147 ml of water. what is the final concentration?
In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find the acceleration of the sled and child.
Calculate the percent ionization of the acid under these conditions. What effect does the nonionized acid have on the membranes lining the stomach?
A 4.10 g nugget of pure gold absorbed 299 J of heat. What was the final temperature of the gold if the initial temperature was 24.0°C? The specific heat of gold is 0.129 J/(g·°C).
Find the force of the seat on the child at the lowest point.
A piece of metal with a mass of 122 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 39 mL. What is the density of the metal?
A 71 kg window washer stands on a 179 kg platform suspended on the side of a building. An electric motor raises the platform 58 m up the side of the building in 7.2 s. How much power is generated by
The solubility product for Zn(OH)2 is 3.0 x 10-16. The formation constant for the hydroxo complex, Zn(OH)42-, is 4.6x1017. What concentration of OH - is required to dissolve 0.015 mol of
It takes 145 s for 1 mL of N2(28g/mole) to effuse from a porous container and 230 s for 1 mL of an unknown gas to effuse under the same conditions. What is the molar mass of the gas?
An object can be in equilibrium if the object is acted on by only A single nonzero force, Two forces that point in mutually perpendicular directions, Two forces that point in directions that are not
A pipette is used to add 32 mL of 0.2 M Pb(NO3)2 to a 261.0 mL solution of 0.3 M NaF. Determine the equilibrium concentration of Pb2+(aq) in the final solution. Ksp(PbF2)=3.6E-8
You have 1904.3 g of a bleach solution. The percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%. How many grams of NaOCl are in the solution?
what is the correct angle of banking of the road? (b) If the curve were not banked, what would be the minimum coefficient of friction between tires and road that would keep traffic from skidding out