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A metal cube of volume 1.55± .05 cm is found to weigh 21.0 ± .5 g. a) What is the density of the metal in kg/m3? (correct significant figures only) density = kg/m3 b) What is the relative uncertainty? ± (dimensionless)
what mass of sodium hydrogen carbonate sodium bicarbonate are required to completely react withneutralize 2.5 moles of
A weak acid HA (pKa = 5.00) was titrated with 1.00 M KOH. The acid solution had a volume of 100.0 mL and a molarity of 0.100 M. Find the pH at the following volumes of base added and make a graph of pH versus Vb:
200g of magnesium phosphate and 250.0g of copper bromide react, how much copper phosphate will be produced?
Calculate the volume of a sample of carbon monoxide at -60.6°C and 801 torr if it occupies 29.4 L at 372 K and 189 torr.
The proposed mechanism for a reaction is 1. ClO-(aq) + H2O(l) => HClO(aq) + OH-(aq) SLOW 2. I-(aq) + HClO(aq) => HIO(aq) + Cl-(aq) FAST 3. OH-(aq) + HIO(aq) => H2O(l) + IO-(aq) FAST Which of the following would be a rate law for the reaction
Why the temperature of the DSC experiment settings need to be determined via TGA
What organic product(s) is formed when 1-methylcyclopentanol is heated in the presence of an acid catalyst?
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?
Why shouldn't you use a spatula to scrape your crystals offthe filter paper
A sample of pure oxygen gas has a pressure of 795 torr. What is the pressure of the oxygen in units of atmospheres. A) 0.795 atm B) 1.05 atm C) 0.604 atm D) 0.760 atm E) 1.01 atm
What are the molar enthalpy and total enthalpy of the pure system when 50% and 75% have been evaporated at: (i) 30°C, (ii) 50°C? Use liquid at 25°C as a reference state
A TLC plate was run in 1:1 ethyl acetate and hexane, but when developed the plate only showed baseline spots. What change could be made to get the spot(s) to move further up the plate
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