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If a 1.55g sample of zinc is heated with excess sulfur to form 2.31g of zinc sulfide, calculate the mass of sulfur used.
Calculate the concentration of the Ca2+ in ppm (or mg/L) using the correct number of significant figures assuming the 1.0 HCl has a density of 1.000 g/mL. Show these calculations clearly in your notebook and on your report form. Recall that calciu..
considering the process rbl rarr rbg at 1 atm and 686degc in this process it is given that rubidium has a heat of
The synthesis of enzymes in response to changing metabolic needs is referred to as
A certain reaction with an activation energy of 195 K was run at 535K and again at 555 K What is the ratio of f at the higher temperature to f at the lower temperature
what volume of 0.684 m mno4- solution is required to react completely with 27.50 ml 0f 0.250 m fe? this is an
Determine the concentration of CO32? ions in a 0.18 M H2CO3 solution. Carbonic acid is a diprotic acid whose Ka1 = 4.3 x 10?7 and Ka2 = 5.6 x 10?11
If a solution containing 17.76 g of mercury(II) perchlorate is allowed to react completely with a solution containing 5.102 g of sodium sulfate.
What is the formula for corn oil, a triglyceride containing palmitic, oleic and linoleic acids
A large flask is evacuated and weighed, filled with argon gas, and then reweighed. When reweighed, the flask is found to have gained 3.219 g. It is again evacuated and then filled with a gas of unknown molar mass
Assume ^35^Cl_2_ is a harmonic oscillator( it is slightly anharmonic). If K=329 N/m compute the zero-point energy for this molecule. ^35^Cl= 34.9688g/mol.
Determine the empirical formula of a compound that is 52% carbon, 13 % hydrogen, and 35 % oxygen. What is the moleuclar formula is the molecular weight of the compound is 46.06 g/mol?
What is the quantity of moles, of neon gas if 4.87 L is at a pressure of 0.635 atm and the temperature
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