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If the molecular mass of a gas increased by a factor of 4 at constant temperature, its rms speed will decrease by a factor of 2.
iron has a density of 7.874 g/cm3. what is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000 cm by 5.000 cm?
What is the most likely reason OSHA requires ammonium nitrate to be segregated for sulfur or finely divided metals? Explain your answer.
consider a 0.0500m HClO2 is a moderately weak electrolyte acid such that 36% of the molecules dissociate when dissolved in water. calculate the van't hoff factor
A gas mixture contains each of the following gases at the indicated partial pressures: N2, 221 torr; O2, 131 torr; and He, 131 torr.
If 100.0 g of water is warmed from 20.0*C to 35.0*C, what quantity of energy has been transferred to heat the water? (the specific heat capacity of water is 4.184 J/g*C)
Which value is colosest to the POH of a 0.3 M solution of the weak base methylamine (CH3NH2)? the Ka for the acid form of methylamine is 2.27e-11 answer choices are 0.011, 1.94,3.92,10.08 and 12.06.
If the concentration of fluoride in fluoridated drinking water is 1 x 10 ^-5 M and the calcium ion concentration in blood is 2.5 x 10^ -3 M, why is there no danger of CaF2 precipitating in the blood stream, after drinking the water?
A sample of gas inside a 150 mL piston has an initial temperature of 550 K and pressure of 8.0 atm. As the piston expands to 650 mL, the pressure decreases to 1.5 atm.
what is hte mass in mgs of solute in 737 mL of a solution that contains 6.38 ppm of Pb(NO3)2 and please explain work
A solution of potassium chromate is prepared at pH 7.72. Calculate the fraction of the total chromate in this solution that is present as the chromate ion CrO42-.
What prefix is used to name a hydrocarbon with two carbon atoms?
What would be the value of the change in concentration of C10H12/change in time during the same period of time? Explain why a catalyst for a forward reaction must also be a catalyst for the reverse reaction. Include an energy level diagram
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