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A sample of a compound contains 0.90 g of element A and 0.60 g ofelement B. If the atomic weight of A is 60 g/mole and that of B is40 g/mole, then what is the empirical formula for this compound?
Why is it quantitatively not acceptable to titrate each vinegar samples with NaOH titrant to the same dark pink endpoint
A 0.250 mol sample of argon gas has a volume of 9.00 L at a pressure of 875 mm Hg. What is the temperature (in celsius) of the gas?
Calculate the formula of a compound, given that 55.85 g of iron combines with 32.06g of sulfur.
Can anyone explain the intermediate compound formation theory in detail
what is the boiling point of the solution in which you are going to cook spaghetti if it contains 58.0 g of nacl
Suppose we want a soln containing 150 micrograms of the protein at a concentration of .5 mg/ml. To do this we will first evaporate the liquid from enough of the protein soln to get 150 micrograms. How much coln do we need to start with. How much H..
Calculate the molar solubility of Ca(IO3)2 in each solution below. The Ksp of calcium iodate is 7.1x10^-7. a.) 0.065 M Ca(NO3)2 b.) 0.065 M NaIO3
question what is the chemical formula of the product formed from the reaction of calcium chloride and potassium
If 500 mL of air contains 2 x 1022 particles (atoms and molecules), how many particles do you inhale in one day if you breathe 15000 L of air?
What is the pH of a solution formed by mixing 125.0 mL of a .0250 M HCL and 75.0 mL of a .0500 M NaOH
The rate constant of a first order reaction is 3.46x10 to the -2 at 298K. What is the rate constant at 350K if the activation energy is 50.2 kJ/mol
what is the O-N-O bond angle in NO3- (a) less than 109.5degree (b) 109.5 degree (c) 120 degree (d) greater than 120 degree
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