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Which compound in each pair has a higher melting point? can you explain why or show how you got the answer
A) RbI or KIB) MgCl2 OR MgBr2
The temperature of the calorimeter plus contents increased from 21.36 *C to 26.37 *C.
an ethylene gas torch reqires 3200 L of gas at 3.00 atm. what will be the pressure of the gas if ethylene is supplies by a 250. L tank?
calculate the minimum volume of 1.00M HCL required to react completely with 5.00g of Ca ?
Calculate the final temperature of 33 ml of ethanol initially at 20 degrees Celsius upon absorption of 541 J of heat. (density of ethanol =0.789 g/ml)?
How many grams of dry NH4Cl need to be added to 2.30L of a 0.800 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.83? Kb for ammonia is 1.8 * times 10^-5
a 45 g piece of ice at 0 c is added to a sample of water at 19c. all of the ice melts and the temperature of the water
A certain stock ammonium sulfate solution is 40.0% ammonium sulfate by mass and has a specific gravity of 1.228. What is the molarity of the solution
Consider the compounds water, ethylamine, acetone, and aniline, whose Kb values can be found here. Classify them by whether they can be appreciably (Keq>1) protonated by: pyridinium, CH3OH2 , both, or neither.
how much energy in kilojoules is required to change 47.6 g of ice at 0 degrees celsius to liquid water at the same
Describe 3 uses of rhodium as a catalyst (written description and the balanced chemical equation) for its use in 1) three way catalytic converters on cars 2) the manufacture of acetic acid by catalytic carbonylation of methanol, called the Monsanto p..
Which of the following signs on q and w represent ( work is done on the systemby gaining heat from the surrounding) ? a- q=+, w=- b- q=-, w=+ c- q= + ,w=+ d- q=- , w= -
Water autoionizes to produce hydronium ion and hydroxide ion. The product of the concentrations of these ions equals the water autoionization constant, Kw. This ionization constant depends on temperature, the enthalpy change, and the entropy chang..
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