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(a) What does the Earth's magnetic field resemble, and where are its poles?
(b) What is magnetic declination, and why is it important in navigation?
Describe the basic principle of a dc electric motor.
Define A mixture of .0375 g of hydrogen and .0185 mol of oxygen in a closed container is sparked to initiate a reaction. Define how many grams of water can form. Explain which reactant is in excess, as well as how many grams of it remain after the..
5 mL of 0.00500 M ferric nitrate [Fe(NO3)3 ] is added to 5 mL of nitric acid [HNO3 ] and 10 mL of 0.00250 M thiocyanate solution [ KSCN ]. Compute the initial Fe3+concentration before reaction.
a 1.0 ounce piece of chocolate contains 15 of caffeine and a 6.0 ounce cup of regular coffee contains 105 of caffeine.
A standard solution of sodium hydroxide has a molar concentration of 0.128M. You use 25.00ml of a solution of hydrochloric acid and this requires 32.75ml of the standardized sodium hydroxide solution to reach the endpoint. WHAT IS THE molar concen..
workplace trends within and outside health care require employees to connect with an ever-widening array of coworkers
Question- A gas is compressed from an initial volume of 5.60L to a final volume of 1.22L by an external pressure of 1.00 atm. During the compression the gas releases 120J of heat. What is the change of internal energy of the gas
The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.80mL of a 0.340MHCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
draw the organic product you would expect to obtain from reaction of the following model triglyceride
Two moles of a monoatomic gas are contained atpressure 1 atm and teperature 300 k. 34, 166 joules of heat are transfered to the gas as a result the gas expands and does work on the surroundings of 1214 joules.
An architect designs a room that has an interior measurement of 50.00 feet by 30.0ft by 10.0 ft. Explain what is the volume of the room in cubic ft
hydrogen gas is collected over water at 21 degrees C and an atmospheric pressure of 748 mm Hg. what is the partial pressure of hydrogen gas in the mixture
Which is the electrophilic site in the following compounds. A. CH3Cl B.H3C-O-CH3 with two lone pairs around O C. BH3. What is the nucleophilic site in each of the following molecules.
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