How much water did thomas add
Thomas poured 25 mL of 0.60 M HCl into a large bottle. He then added enough water so that the new (diluted) concentration was 0.10 M HCl. How much water did Thomas add?
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The half-life of C-14 is 5730 years. A 3.4 g sample of bone has 33.3 disintegrations per minute. How old is the bone sample in years?
A frictionless pulley with zero mass is attached to the ceiling, in a gravity field of 9.80 m/s2. Mass M2=0.100 kg is being accelerated downward with a=1.10 m/s2. Calculate the mass m1
How many molecules of carbon dioxide are produced when 130 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water
An n-p-n transistor has impurity concentrations of 2x10^20 cm-3 in the emitter, 1x10^18 cm -3 in the base and 2x10^16 cm-3 in the collector. Assume the metallurgical base width is 150nm and the metallurgical emitter width is 200nm. The minorit
A nuclear power plant operating at 40.0% efficiency produces 1072 MW of usable power. What is the energy in joules released by the fission of a single uranium-235 atom?
The tank in the figure shown below is being filled with two one dimensional inlets. Air is trapped at the top of the tank. The water height is h.
What is the mole fraction of ethanol in a solution made by dissolving 14.6 g of ethanol in 53.6 g of water?
How much rations must the hiker consume to avoid a reduction in body temperature of 4.0 K as a result of heat loss? Assume the heat capacity of the body equals that of water. Assume the hiker weighs 55 kg. State any additional as
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