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A 0.066 mol sample of formaldehyde vapor, CH2O, was placed in a heated 500. mL vessel and some of it decomposed. The reaction is CH2O(g) H2(g) + CO(g). At equilibrium, the CH2O concentration was 0.040 mol L-1. Calculate the value of Kc for this reaction?
A sample that weighs 0.1586 grams contains only sodium chloride and potassium chloride was dissolved in water. It took 22.90 mL of 0.1000 AgNO3 to precipitate all of the chloride present.
A gas sample was collected over water at 25.3 degrees Celsius, The total pressure is determined to be 0.97 atm. What is the partial pressure of the gas that was collected?
When given the reactants in a reaction and their concertration and the time it takes for the reaction to occur, how do you find the rate expression, the order of reaction for each reactant, and the k constant for the reaction
A 5.00 % m/m glucose solution has d = 1.02 g/mL. What is the mass of glucose in 362 mL of the solution.
3.953g of egg shell was reacteed with 50ml of 0.1 mol/l hcl and shel contains ca2co3 after all the sheell reacted resultign solution was placed in a columetric flask and th colume made up to be 100ml.
The density of lead is 11.4 g/cm3 at 25°C. Calculate the volume occupied by 25.0 g of lead.
A gas at constant temperature occupies a volume of 4.59 L and exerts a pressure of 895 torr. What volume (in L) will the gas occupy at a pressure of 642 torr
Write the overall reaction, showing how much ATP (Adenosine tri phosphate) can be produced per pentose used also write an equation for the generation of NADPH using ribose as a sole source of carbon?
acetylene gas c2h2 used in welding produces an extremely hot ?ame when it burns in pure oxygen according to the
How many moles of each ion are in each solution? (a) 2 mol of potassium perchlorate dissolved in water K+ mol ClO4- mol (b) 255 g of magnesium acetate dissolved in water Mg2+ mol C2H3O2- mol
When sodium reacts with chlorine, 411 kj/mol is released. Calculate the amount of heat released if 1.37 mol of sodium form.
Determine the percent by mass of all elements in the compound sodium carbonate decahydrate better known as washing soda
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