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Balance the chemical equation given below, and determine the number of grams of MgO needed to produce 15.0 g of Fe2O3.___ MgO(s) + ___ Fe(s) ? ___ Fe2O3(s) + ___ Mg(s)
How can you tell when looking at organic compounds what is saturated? Here are some examples?
Describe how you would prepare 150.0 mL of a pH = 5.00 buffer solution from a solution of 0.200-M aniline, C6H5NH2, a weak base
For a reaction that follows the general rate law, Rate= k[A] [B]^2, what will happen to the rate of reaction if the concentration of B is increased by a factor of 3.00?
How many grams of Na3PO4 will be needed to produce 425 mL of a solution that has a concentration of Na+ ions of 0.900 M ?.
Compute the volume of CO 2 and water vapour produced and the volume of oxygen remaining, when 20.0 dm 3 of propane reacts with 120.0 dm 3 of oxygen. All gas volumes are measured at the same temperature and pressure.
You have 250.0 ml of 4.00 M sugar solution. You add 217.3 ml of water to this solution. Determine the concentration of the sugar solution after the water has been added
Compound (CH3)2CCHCH3 contains 85.63 g carbon per 100.0 g compound. Calculate the mass (g) of a sample of (CH3)2CCHCH3 if it contains 148.9 g of carbon.
You are asked to prepare 1.6 L of a HCN/NaCN buffer that has a pH of 9.88 and an osmotic pressure of 1.73 atm at 298 K. What masses of HCN and NaCN should you use to prepare the buffer? (Assume complete dissociation of NaCN.)
some ice cubes at 0 degrees c with a total mass of 379g are placed in a microwave oven and subjected to 750. w 750.
Why does K + N2 yield no reaction. could some one please explain what factors contribute to no reaction
What is the brand name of Naproxene? Naproxen is said to be the first NSAID marketed in an enantiomerically pure form. What is a NSAID? What is an enantiomer?
The pH of a solution is 3.70. What is the (H+)? What are (OH-) and pOH. The Ka for Hypochlorus acid, HCIO, is 7.2 x 10-4 at 25 oC. What is pKa. Write the equation for the reaction to which Ka applies.
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