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Consider the combustion reaction: CH4(g) + O2(g)= CO2(g) + H2O(l) is this an exothermic reaction? If 100g of CH4 is burned, calculate the heat exchange (balance the equation).
The concentration of potassium ions inside a nerve cell is around 20 to 30 times that outside the cell. Calculate the potential difference between inside and outside a nerve cell, if it depends only on this ionic imbalance.
Discribe how to prepare this solutions show all work and calcualtion? a) 50mL of asolution containing 0.15M malonic acid [CH2(COOH)2 plus 0.02 manganese sulfate [ MnSO4] b) 100 mL of 0.08M sulfuric acid [H2SO4] from 18 M concnentrated sulfuric aci..
How many milliliters of 0.10 M HCl would have to be added to 100 mL of a saturated solution of PbCl2 in contact with 50.0 g of solid PbCl2 to reduce the Pb2+ concentration to 0.0050 M? (Don't forget to take into account the combined volumes of the..
If 57.0 mL of BaCl2 solution is needed to precipitate all the sulfate ion in a 754 mg sample of Na2SO4 , what is the molarity of the solution
An element has 3 stable isotopes with natural abundances of 11%, 17%, and 72%. The masses of those isotopes are 19.9, 21.9, and 22.9 amu respectively. What is the average atomic mass of this element?
What is the mass of sulfur dioxide gas (SO2) at STP in 164 L of the sample?
Write the net ionic equations and determine the standard potentials for the reaction of copper or zinc with tin (IV). Which of the two reactions should be spontaneous
What is the lewis dot structure of Cl2O add formal charges to the atoms remember that the formal charges will add up to the ion charge
The BaSo4 was found to have a mass of 11.96 mg. The molecular weight of the compound was found to be 168 g/mol. Using this data, what is the molecular formula of the C, H, S compound?
It is desired to inflate a baggie with a volume of 869 milliliters by filling it with hydrogen gas at a pressure of 0.847 atm and a temperature of 296 K. How many grams of H2 gas are needed? answer in g please
Assume an organic compound has a partition coefficient between water and diethyl ether equal to 8.95. If there are initially 7.89 grams of the compound dissolved in 100.0 mL of water, how many grams will remain in the aqueous layer after extractio..
How many liters of F2 at STP could be liberated from the electrolysis of molten NaF under a 2.16 ampere current
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