How much chocolate would have to consume to get caffeine
A 1.0 ounce piece of chocolate contains 15 of caffeine, and a 6.0 ounce cup of regular coffee contains 105 of caffeine. How much chocolate would you have to consume to get as much caffeine as you would from 5.0 cups of coffee?
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A syringe initially holds a sample of gas with a volume of 285 mL at 355 K and 1.88 atm. To what temperature must the gas in the syringe be heated/cooled in order to have a volume of 435 mL at 2.50 atm?
If 35.0 mL of NO2 gas is completely converted to N2O4 gas under the same conditions, what volume will the N2O4 occupy?
What are some valid resonance structures for CS2? Other than S=C=S; can I have S triple bonded to C single bonded to S? Wouldn't there be three electrons left on the triple bonded S; it would be sharing three when it started with six I don't under
If 3.30 moles of ethane, C2H6 undergo combustion,according to the unbalanced equation C2H6+O2--> CO2+H2O, how many moles of oxygen are required?
A solution is prepared by dissolving 0.16 mol of acetic acid and 0.16 mol of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 57.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 255.0 mL of solution. What is the molarity of the ethanol in this solution?
Use the initial volume of acetic acid, the volume of NaOH required to reach the equivalence point and the value of the molarity of NaOH that you obtained when you standardized this solution against KHP in the strong-acid/strong-base experiment to
The rate constant for a certain reaction is k= 5.40×10-3 . If the initial reactant concentration was 0.250 , what will the concentration be after 9.00 minutes?
Calculate the de Broglie wavelength of an electron in the ground state of the H atom. Show that this wavelength is equal to the circumference of the "orbit"
Which of the following statements about writing molecular, complete and net ionic equations is FALSE A net ionic equation is an equation showing only the species that actually change during the reaction
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The Japanese invasion of Manchuria and Italy's occupation in Abyssinia (Ethiopia) were challenges to the restrictions established by the League of Nations.
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