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In the reaction between HCl and Mg ribbon, 40.0 mL of a gas mixture, collected in a gas collection tube at a constant T and P, contained H2 gas that was mixed with gaseous H2O. if 35.0 mL of the gas mixture contained 1.75 x 10^-3 mole of H2,
a) What mass of H2O was present in the gas mixture you collected?
b) What is the mole % of H2O in the mixture?
How do you determine which methyl group gets the equatorial position in an 1-4 disubstituted isomer? (Assuming the methyl groups are different. For example, one is ethyl and the other is methyl).
The 45.0 kg mass is now dropped from a height of 1.50 m into a cup containing 125 g of water. The water is initially at 20.0oC. Explain what will be the final temperature of the water. Specific heat of water: 4.184 J g-1 deg-1
Estimate the molar heat of vaporization of a liquid whose vapor pressure doubles when the temperature is raised from 85ºC to 95ºC.
the enthalpy of vaporization of ethanol i 43.5 kjmole at its normal boiling point of 352 k. using avalue of the molar
A fast-food franchise is considering opening a drive-in window food service operation. Customer arrival has a mean arrival rate of 48 cars per hour.
What force must the second exert to keep the door from moving? Assume friction is negligible.
What is the concentration of Br- (aq) in a solution prepared by mixing 75.0 mL of 0.62 M iron (III) bromide with 75.0 mL of water? Assume volumes are additive. the answer is 0.93 but I got 1.86 and 3.1 I'm not even sure anymore!
Stoichiometry limiting reagent: find the reagent in excess. then calculate the mass or volume of the products formed.
Consider a 2430-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within 5.0 feet at the time of the measurement, what is the uncertainty in the velocity of the car?
What is the energy of a violet photon with wavelength 4.0 x 10^-7 m?
How can ethidium ions cause mutations in DNA and what type of interactions exists between the DNA and ethidium ions?
Calculate the mass of emitted into the atmosphere upon accelerating the from 0.0 to 67.0 . Assume that the required energy comes from the combustion of octane with efficiency.
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