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A furniture factory needs 31.5 ft2 of fabric to upholster on a chair. Its Dutch supplier sends the fabric in bolts of exactly 200 m2. What is the maximum number of chairs that can be upholstered by 3 bolts of fabric (1 m = 3.281 ft)?
a step by step answers for those Question please. Please be brief. What is the PH of a buffer prepared by combining 25mL of 0.1M nitrous acid with 25mL of 0.1M sodium nitrite?
How long would it take for 1.50 mol of water at 100.0 C to be converted completely into steam if heat were added at a constant rate of 21.0 J/s?
sodium borohydride reduction experiment write the balanced equation for the reaction and calculae the percent yield
What were the principal quantum numbers of the initial and intermediate excited states involved?
closed container and the mixture is ignited the reaction products are CO2 and H2O. If 61.6 g of CO2 are actually produced in the reaction , what is the percent yeild of CO2?
The pH of 1.00L of the buffer containing 1.00M CH3C00Na and 1.00 M CH3COOH after addition of .080 mole NaOH is
Write the balanced equation for the ionization of the weak base pyridine, C5H5N, in water, H2O. Phases, such as (aq) or (l), are optional.
When ethylamine, a weak base (Kb=4.3E-4), reacts with the formic acid, a weak acid (Ka=1.8E-4), the following reaction takes place: Calculate K for this reaction.
what is the pH of a solution obtained by adding 3.50g of HBr to 435mL of a 0.639M solution of HNO3?
Some of the best laboratory vacuum systems can pump down to as few as 9.0 multiplied by 109 molecules per cubic meter of gas. Calculate the corresponding pressure, in atmospheres, assuming a temperature of 25°C.
Does a chemical change occur when you cook an egg? Why or why not? When you fry an egg, it becomes a solid, the heat makes it smoke, and the color changes from clear and yellow to all yellow.
List all compounds that are present when reaction is complete. C) Determine the theoretical yield of H3PO4 based on the starting materials and D) Determine the mass, in grams, of each compound present when the reaction is complete
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