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For a 15.0% (by mass) NaCl solution, find A) The mass of NaCl in 150g of the solution b) the amount of solution needed to obtain 35.0g NaCl c) mass of NaCl needed to make 1000g of the solution.
Does the body have an impact on the brain? If so, how much? What do you have to back up your position?
A car travels at 58.0 miles per hour and gets 10.0 kilometers per liter of gasoline. How many gallons of gasoline are needed for a 1.00 hour trip.
To the solution in problem 1 (d) at 100 degrees celsius, 10g of water are added, and the solution is cooled to 0 degrees celsius... (problem 1d: the number of grams of water required to dissolve a mixture containing 15 g KNO3 and 3.5 g CuSO4 * 5 H..
An unknown gas Q effuses 1.26 times as fast under the same conditions as Xe gas. What is the molar mass (g/mol) of Q?
How many grams of methanol must be added to 7.50kg of water to lower its freezing point to -15.0^circ C? For each mole of solute, the freezing point of 1 {rm kg} of water is lowered 1.86 ^circ {rm C}
What is the balanced education and stoichiometric reagents needed with mole calculations of 1 sodium hydroxide pellet(0.075 to 0.095 g) and 0.24 g acetophenone and 0.11 g benzaldehyde
The reaction below has a Kc value of 1.0 × 1012. What is the value of Kp for this reaction at 500 K. 2 SO2(g) + O2(g) 2 SO3(g)
Consider a certain type of nucleus that has a rate constant of 2.62 * 10^-2 min^-1. Calculate the time rquired for the sample to decay to one-fourth of its initial value.
A particular brand of gasoline has a density of 0.737 g/mL. How many grams of this gasoline would fill a 14.4 gal tank?
What is the approximate mass percent of cholesterol in a blood sample having a cholesterol level of 176? Why can you not give a more precise answer
Gas Chromotography/ Orange oil experiment. Limonene (L) and internal Standard Anisole (A) Were used and needed to find the Wt% of L in a given orange oil sample.
Draw the basic repeating unit of polyethylene terephthalate (PET). Classify PET as a polyamide or polyester. Is PET a condensation or addition polymer? Explain.
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