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how do you find the empirical formula of a compound if they don't give you percentages. For example, if they ask: what is the empirical formula for N2O4?
calculate the micrograms (to the nearest microgram) of iodine per serving in the finished product. Show your work.
What is the percent by mass of NaHCO3 in a solution containing 10 g of NaHCO3 dissolved in 300 mL of H2O
What is the theoretical yield of aluminum oxide if 1.60 mol of aluminum metal is exposed to 1.50 mol of oxygen?
By Solving this problem student is able to understand how to calculate theoretical and percent yields in an experiment - determine theoretical and percent yields for this experiment.
What occurs at the molecular level of an extraction? We did an extraction of benzoic acid using NaOH and diethyl ether dried to 1, 4-dimethoxybenzoate using NaOh
The lethal inhalation dose of sarin for a 200lb person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.
Important information about Molarity, You have 20 ml of 10% Bromophenol Blue (BPB). Using a 10% stock, how would you prepare 5 ml of a 0.2 % stock?
A sample of propane,C3H8, contains 10.8 moles of carbon atoms. How many total moles of atoms does the sample contain?
A Flask contains 0.320 mol of liquid bromine,Br_2. Determine the number of bromine molecules present in the flask.
Assume that liquid water forms item 5. Write a formula equation for the reaction that shows the physical states of all compounds?
Compute the initial pressure of the gas in the cylinder. b. Compute how much heat must be added to the gas in the cylinder for the spring to compress by 2cm
how many milligrams of hydrazoic acid ( ka= 1.9x10^-5) must be in a 5.0-L solution that has a pH of 4.90?
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