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A sample of a commotion whose half-life is known to be 7.50 minutes was measured from 10:03 to 10:13. The total number of counts evidence in this 10-minute interval was 34,650. Explain what was the activity of the sample in counts per minute at 10:00?
A compound of arsenic as well as fluorine is a gas. Explain a sample weighing 0.100g occupies 14.2mL at 23 C as well as 75 mmHg. Explain what is the molecular weight of the compound
1. on the box of arm and hammer baking soda it says the contents are sodium bicarbonate. basically this means the
The mass of purified sample of impure benzoic acid was .630g. How would I find the percentage recovery of my impure benzoic acid? And are the numbers I got in the lab reasonably correct?
What is the boiling point of a solution of benzene containing 0.2 moles of a non volatile solute in 125 grams of benzene given that pure bezene has a boiling point of 80.1
Calculate the change in total internal energy for a system that releases 2.26 x 10^4 kJ of heat that does 5.54 x 10^4 kJ of work
Oxyhemoglobin is bright red, while deoxyhemoglobin is purple. Elucidate the difference in color in terms of the electron configurations of iron in these 2 complexes.
The coinage metals -- copper, silver, and gold -- crystallize in a cubic closest packed structure. Use the density of copper (8.95 g/cm3) and its molar mass (63.55 g/mol) to calculate an approximate atomic radius for copper.
When o.514 g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 25.8 to 29.4 degree Celcius. Find delta energy reaction for the combustion of biphenyl in KJ/mol biphenyl.
a normal mitochondrion in a normal cell (there are no inhibitors present). The amino acid glutamate can be converted into alpha ketoglutarate which then can enter the Citric Acid Cycle.
Potassium hydrohen phthalate, KHC8H4O4, functions as monoprotic acid. If a 1.46 g sample of impure KHC8H4O4 requires 34.3 ml of 0.145 M NaOH
Vitamin C contains 40.92% C, 4.58% H, and 54.5% O by mass. What is the empirical formula of Vitamin C
Limiting Reactants and Percent Yield
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