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A block of metal has a width of 3.2cm, a length of 17.1cm, and height of 3.3cm. Its mass is 1.5kg. Calculate the density of the metal.
compouds a and b are alcohols with the molecular formula c3h8o. the following informations was obtained from a mass
Determine the limiting reactant if 140 grams of Calcium phosphate combines with 3.63 mol of sulphuric acid and also explain how many moles of calcium sulphate can be obtained?
The Space Shuttle usesaluminum metal and aluminum perchlorate in its reusable boosterrockets. The products of the reactionare aluminum oxide, aluminum chloride, nitrogen oxide gas, andsteam:
Container A (with porous walls) is filled with air at STP. It is then inserted into a large enclosed container (B) which is then flushed with H2(g). What will happen to the pressure inside container A?
The purity of gold alloys is expressed in karats, which is the mass fraction of gold multiplied by 24. Pure gold is 24 kt, whereas 16 kt gold jewelry typically contains 66.666667% gold, 16.666667% silver and 16.666667% copper (by mass).
calculate the ph after 0.020 mol hcl is added to 1.00 l of each of the four solutions.a 0.100 m honh2 kb 1.1
using a gas sample of an ideal gas of .95 mol 3.00 atm and at 300 k expands from sixteen litres to twenty eight litres
In basic solution CrO42- oxidizes HSnO2- to HSnO3- and is reduced to CrO2-. Write the balanced net ionic equation for this reaction. How many OH- are there in the balanced equation
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
As a technician in a large pharmaceutical research firm, you need to produce 400 mL of 1.00 M potassium phosphate buffer solution of pH = 7.29. The pKa of H_2PO_4^- is 7.21.
What assumption did you make about the reaction of KMno4 solution and H2C2O4 solution in those determination that allowed you to consider k to be a constant
Which of the following compounds is quite insoluble in water, but would liberate a gas when treated with aqueous acetic acid
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