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Suppose a typical 1mL sample of bacteria contains 1,000,000 bacteria. If you shine a light beam through this sample, minimal light passes through ( assume no light passes through). What if your sample allows 50% of light to pass through? How many bacteria are in your sample.
Limestone (CaCO3) is decomposed by heating quicklime (CaO) and carbon dioxide. Calculate how many grams of quicklime can be produced from 9.0 kg of limestone.
How many grams of glucose are in 100. rm mL of the final solution?
calculate the theoretical yield of TiO2. If the percent yield of the reaction is 77.6%, how many grams of TiO 2 are actually formed?
For the equilibrium H2(g)+ CO2(g) H2O(g)+CO(g) Kc=3.18 at 1106K. If each of the four species was initially present at a concentration of 3.000M.
Determine the pH of the solution before the addition of any HNO3. The Kb of NH3 is 1.8 × 10-5. a. 4.74 b.9.26 c.11.13 d. 13.00 e.12.55
calcuium hydroxide in an acid-base titration to neturalize an acid to the equivlant point. How many mols of potassium hydroxide would be needed to complete the same neutrization?
What would be the pressure of the gas, in kPa, if it were transferred to a container at 24°C whose volume is 55.0L?
An unknown gas Q effuses 1.26 times as fast under the same conditions as Xe gas. What is the molar mass (g/mol) of Q?
the mass of the flask is measured when the outside of the flask is wet. However in part B.3 the outside of the flask is dried before its mass is measured.
What is the pH of a buffer solution containing 0.155 mol dm-3 of benzoic acid and 0.315 mol dm-3 sodium benzoate.
calculate the change in internal energy for a system that is giving of 25.0 kJ of heat and is changing from 12.00 L to 6.00L in volume at 1.50 atm pressure.
Neopentyl alcohol, (CH3)3CCH20H,cannot be dehydrated to an alkene without rearrangement. What is the chief product of dehydration?
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