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The specific heat capacity of a substance is 0.62 J/(g?K) and its molar mass is 225 g/mol. Find its molar heat capacity.
A garden hose has an internal diameter of 1.5 cm. It's connected to a sprinkler that consists merely of an enclosure with 14 holes, At what speed does it leave the sprinkler
The concentration of Pb2+ in a commercially available standard solution is 1.000 mg/mL. What volume of this solution should be diluted to 6.0 x 10^2 mL to produce a solution in which the concentatio
What is the efficiency of a pump that uses 3.5kW of electrical power in raising 200 litters of water through a height of 12m in 10 seconds
Would your calculation of the atomic mass of the metal be too high or too low if your hot metal sample cooled off, unbeknownst to you, while being transferred to the calorimeter
A spring of stiffness 25 kN m-1 is compressed by an initial load of 5 kN, gradually applied, What is the total work done on the spring
A bomb is designed to explode 2.00 s after it is armed. The bomb is launched from earth and accelerated to an unknown final speed. What is the final speed of the bomb just before it explodes
A solution is prepared by dissolving 0.16mol of acetic acid and 0.16mol of ammonium chloride in enough water to make 1.0 L of solution.
Calculate the specific heat of a metal from the following data. A container made of the metal has a mass of 3.3 kg and contains 15 kg of water. A 1.0 kg piece of the metal initially at a temperature
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would
At 12°C, a brass cube has an edge length of 25 cm. What is the increase in the cube's surface area when it is heated from 12°C to 97°C
Three compounds are running on a silica gel TLC plate developed in hexane-ethyl acetate, an alcohol, an aromatic, and a carboxylic acid. Which of the following are true.
Decaborane, B10H14, was used as a fuel for rockets in the 1950's . It ignites spontaneously with O2 according to the following reaction: B10H14 + 11O2 ? 5B2O3 + 7H2O
An L?R?C series circuit has phase angle -33.0?. What is the voltage amplitude across the resistor
In the production of printed circuit boards for the electronics industry, a 0.715 mm layer of copper is laminated onto an insulating plastic board. Next a circuit pattern made of a chemically resist
A rocket is accelerating upward at 4.90m/s2 from the launchpad on the earth. If the ball is displaced 8.50 ? from the vertical and released, find the amplitude of the resulting swings of this pendulum
What is the final dilution obtained after each dilution series shown below
An unhappy rodent of mass 0.310kg , moving on the end of a spring with force constant 2.50N/m, If the constant b has the value 0.901kg/s, what is the frequency of oscillation of the mouse
Draw a dilution scheme that would produce countable plates if the original culture has 4,730,000 viable cells/mL.
Two long parallel wires, each carrying a current of I = 4.0 A in the same direction, What is the magnitude of the Magnetic force per unit length between the wire
Determine the number of cells per milliliter of the original culture when the total number of colonies and the total number dilutions are as follows
you observed that a high dilution of a young culture was plated on a medium known to support its growth, but after 48 hours of incubation, the plate showed no growth. Give two possible explanations
A bomb at rest at the origin of an xy-coordinate system explodes into three pieces. Just after the explosion, one piece, of mass 2.0 kg, what is the magnitude of the velocity of the third piece
In a game of billiards, the cue ball is traveling eastward when it strikes a second ball that is initially at rest. What was the speed of the cue ball prior to the collision