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What type of crystal lattice does each metal form? the number of atoms per unit is given in parentheses. Ni (4) , Cr (2) , Ca (4)
how many ml hydrochloric acid of 0.1 m must be added to 100 ml of a 0.2 m solution of tris base to form a buffer ph
Mercury has a density of 13.6 g per mL. A barometer holding 9.50mL of mercury has broken. The cost of mercury disposal is based on mass. How many kilograms of mercury were in the barometer?
How many liters of hydrogen gas are collected over water at 18 degrees Celsius and 725 mmHg when 0.84 g of lithium reacts with water?
Which has the highest vapor pressure?
the rate constant for the elementary reaction is 7.1x109mmiddots at 25degc. 2 nog o2g 2 no2gnbspwhat is the rate
A 4.78 L sample of H2O(g) reacts at a temperature of 375°C and a pressure of 692 mm Hg. How many grams of NH3 can be produced?
Pancreatic lipases hydrolyze triacylglycerols (triglycerides) that have been emulsified by bile. Modify the triacylglycerol below to show the products of its hydrolysis by pancreatic lipase and two water molecules.
For the reaction 2A + B --> 2C, if B is initially 4.0M and 2min later is 3.0M, what is the rate of appearance of C?
A 670 mL gas sample at STP is compressed to a volume of 284 mL, and the temperature is increased to 20C. What is the new pressure of the gas in Pa? Answer in units of Pa.
Carbonate buffers are significant in regulating PH of blood at 7.40. Calculate the concentration of Carbon dioxide in a 0.200M NaHCO3 at PH=7.40.
An unidenti?ed organic compound X, containing C, H, and O was subjected to combustion analysis. When 228.4 mg of pure X was burned 627.4 mg of CO2 and 171.2 mg of H2O were obtained. Determine the simplest formula of the compound X?
Balance the following reactions and identify the species that have been oxidized and the species that have been reduced
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