How many bacteria are there in culture after five hours
The culture of bacteria obeys law of unihibited growth. If 500 bacteria are present initially and there are 800 after one hour, how many will be there in culture after five hours.
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Checkers Cab Company is trying to decide which brand of tires to employ for the coming year. Based upon current price and prior experience, they have narrowed their choice to two brands,
At 910 mmHg and 36 oC a cylinder with a movable piston contains a 1024 ml sample of argon gas, determine the numbers of moles of gas are in the sample? Make sure to express the answer to the correct number of significant figures.
Determine the numbers of oxygen atoms are in the 53.5 g of calcium phosphate? Express your answer to the correct number of significant figures. Describe whether you would expect the same number of oxygen atoms in the 53.5 g of sodium phosphate.
What are the molarity and the molality of sucrose in this solution when a 10.0% aqueous solution of sucrose (C12H22O11) by mass has a density of 1.040 g/ml.
The synthesis of aluminum oxide is exothermic to the extent of 1672KJ/mol of oxide and the heat of formation of ferric oxide is-836 KJ/mol of ferric oxide.
Calculate the molar mass of the acid when a 0.2688-g sample of a monoprotic acid neutralizes the 16.4 mL of0.8133 M KOH solution.
Determine the concentrations of Cu2+,Cu(NH3)42+, and NH3 at equilibrium if 2.50 g of CuSO4 are dissolved in the 9.0 X102 mL of 0.30 M NH3,. Explain in detail.
Using iron and chromium as examples, explain the four chemical or physical properties in which the transition elements and their compounds differ from those of aluminum, magnesium and their compounds.
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