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Suppose that the microwave radiation has a wavelength of 12.7 cm. How many photons are required to heat 200. mL of coffee from 25°C to 62°C?
A 25-g sample of an alloy at 92 degrees celsius is placed in 50 grams of water at 20 degrees celsius. If the final temperature reached by the alloy sample and water is 27 degrees celsius.
The mixture is ignited with a spark and it reacts to form H2O (l)liquid water. determine the temperature of water?
what is the molarity of a saturated solution of AgOH with a Ksp = 2.0 x 10^ -8
The atomic mass in g mol of Fe=55.85, S=32.07 O=16, calculate the number of moles of the negative ions present in 7.45g of iron (III) sulfate.
Osmium has a density of 22.6 g/cm3. What volume would be occupied by a 21.8 g sample of osmium?
The printed label on a bottle of commercial vinegar states that the acetic acid concentration is 5%. (a) If the manufacturer had reported two significant figures int he concentration, what would the percentage range be so that all values would rou..
at 75 degrees celsius, a gas has a volume of 3.22 dm^2. What volume will it occupy at 75 k?
Determine the freezing point and calculate the final temperature if initially this iron nail was at temperature of 28 degree Celsius?
Identify the largest heat of combustion, small heat of combustion and highest boiling point for: heptane(i), 3-methylhexane(ii), nonane(iii)
What is the final river temperature downstream? Assume that the density of the waste stream is 1000 kg/m3.
Calculate the volume (in liters) occupied by 2.08 moles of nitric oxide (NO) at 5.84 atm and 76°C.
a gas has a volume of 590mL at a temperature of -55.0 C. what volume will the gas occupy at 30.0C?
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