you have 125 g of a certain seasoning and are told that it contains 22.0 g of salt. What is the percentage of salt by mass in this seasoning?
(express the percentage numerically. Do not round)
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Show how the factor-unit method can be used to prepare an oatmeal breakfast for 27 guests at a family reunion. The directions on the oatmeal box say that 1 cup of dry oatmeal makes 3 servings.
This year, like many past years, you begin to feel very sleepy alter eating a large helping of Thanksgiving turkey. Some people attribute this sleepiness to the presence of the amino acid tryptophan in turkey. Tryptophan can be used by the body to produce serotonin, which can calm the brains activity and help to bring on sleep. a. What mass in grams of tryptophan is in a 0.25-lb serving of turkey? (Assume tryptophan accounts for 1.0% of the turkey mass.) b. What mass in grams of tryptophan is in 0.25 quart of milk? (Assume tryptophan accounts for 2.0% of milk by mass and that the density of milk is 1.04 kg/L.)
The photograph below shows a beaker of water and a sugar cube, the combined mass of which is balanced by the weights on the right pan. The sugar cube is then placed in the water, and it dissolves completely. Do weights need to be added to or taken away from the right pan to keep the system in balance? Explain.
Yeast converts glucose to ethanol and carbon dioxide during anaerobic fermentation as depicted in the simple chemical equation here: glucose ethanol + carbon dioxide If 200.0 g of glucose is fully converted, what will be the total mass of ethanol and carbon dioxide produced If the fermentation is carried out in an open container, would you expect the mass of the container and contents after fermentation to be less than, greater than, or the same as the mass of the container and contents before fermentation? Explain. If 97.7 g of carbon dioxide is produced, what mass of ethanol is produced
To prepare for a laboratory period, a student lab assistant needs 125 g of a compound. A bottle containing 1/4 lb is available. Did the student have enough of the compound?
A student working for Stop and Shop is packing eggs into cartons that contain a dozen eggs. How many eggs will the student need in order to pack 72 cartons?
If a sample weighing 51.0 g contains only carbon and hydrogen, and contains 14.0 g of hydrogen, what is the percentage of hydrogen by mass in the sample? Please enter the value only with one decimal place
A package of beef jerky says that there are 2 serving sizes (1 serving size =28g) in the package. Additionally, is says that there are 16g of protein per serving. What percentage of the package is made up of protein? Be sure to include the % sign with your answer.
The liquid substances mercury (density = 13.6 g/mL), water(1.00 g/mL), and cyclohexane (0.778 g/mL) do not forma solution when mixed but separate in distinct layers. Sketchhow the liquids would position themselves in a test tube.
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