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You pass a road sign saying "New York 115 km." If you drive at a constant speed of 65 mi/h, how long should it take you to reach New York? (Round to the nearest minute.)
Determine how much Ammonia would be formed if 187 grams of calcium carbonate CaCO 3 are formed?
a sample of propane, contains 17.7 moles of carbon atoms. How many total moles of atoms does the sample contain.
Consider the following exothermic reaction: C2H4 (g) + Cl2 (g) C2H4Cl2 (g) If you were a chemist trying to maximize the amount of C2H4Cl2 produced, which of the following might you try?
How much heat is liberated by the combustion of 183 g of hydrogen? ΔHcomb = -286 kJ/mol.
Sugar (82.00 grams; molar mass 342.3 g/mol) was dissolved in water. The freezing point of the solution was determined to be -3.60 deg C. How many grams of water were used to make the solution?
For a given sample of {rm CH_3OH}, the enthalpy change on reaction is 19.0 kJ. How many grams of hydrogen gas are produced?
A 6.269 g sample of NiCl2·2H2O is heated until all the water of hydration is removed. What will be the mass of the remaining NiCl2?
I need help describing an experiment where one could measure the value of the extinction coefficient of a solution with a concentration (c mol/L) of chlorophyll in water for a given wavelength.
A calorimeter contains 17.0 mL of water at 15.0 degrees celcius When 1.40 g of (a substance with a molar mass of 69.0 g/mol) is added, it dissolves via the reaction X(s)+H2O(l)->X(aq)
Complete the following table with the correct formulas from the ions
If an aqueous solution has a hydronium ion concentration ([H3O+]) of 5.10 x 10-9 mol/L, what is the hydroxide ion concentration ([OH-]) in the solution
Which compound is more reactive toward electrophilic substitution e.g nitration? Explain you reasoning.
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