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2H2(g) + O2(g) ---> 2H2O(g)
a) What is the limiting reagent?b) How many grams of steam are produced?c) How many moles of limiting reagent remain unreacted?d) How many moles of excess reagent remain unreacted?
When it is present in aqueous solution, the metal strontium, Sr, exists as an ion with a charge of +2. Given this information, state the chemical formula of the metal salt, strontium nitrate.
a sample of water of 27.0 grams at the temperature of 290. kelvin is combined with 49.0 grams of water at 32 degree
how many grams of methylamine must be combusted to raise the temperature of 431 g of water from 11.0 degrees Ce to 41.0 degrees C?
If 3.8 kcal of energy is released when 1 gram of glucose is combusted, calculate how many kcals are released when 0.689 moles of glucose are combusted
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
Why is it that benzylic and allylic carbons undergo Sn1/E1 reactions even if they are primary carbons
Compute the molar mass of vitamin C if a solution of 22.7 g in 100. g of water freezes at -2.40 oC. The Kf of water is 1.858 oC kg/mol.
Explain why gas chromatography usually ramp(increase) the oven temperature during an analysis
MgNH4PO4.6H2O loses H2O stepwise as its is heated between 40 degree celcius and 60degree celcius the monohydrate is formed and above 100 degree celcius the anhydrous is formed what are the phosphorus percent of monohydrate and of the anhydrous mat..
A buffer was prepared by dissolving 2.26 grams of phenylacetic acid (HC6H5CH2CO2, Ka = 4.9x10-5) and 3.25 grams of potassium phenylacetate (KC6H5CH2CO2) in enough water to yield 750. mL of buffer solution. What is the pH of this buffer solution
How many PopTarts® are needed to convert 1,000.0 g of water at 20.0 oC to steam at 100.0 oC? One PopTart is equal to 800,000 J of energy
Determine the iodide ion concentration (in molarity) in a solution containing 12.6 g CaI2 dissolved in 2750 mL of solution
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