Chemistry, 28.09.2019 20:30, mhzperfect

How many moles of hydrogen are evolved when an excess of sodium metal is added to one mole of citric acid?

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Chemistry, 13.08.2019 18:10, paynedeforest2596

Calculate the following quantities, and record them in the table: • the number of moles of citric acid used (use 192.13 grams/mole as the molar mass of citric acid.) • the heat absorbed by the water, in joules (use q = mcat, where 15.0 milliliters of water has a mass of 15.0 grams. use 4.186 joules/gram degree celsius as water's specific heat capacity.) • the change in internal energy of the mixture of citric acid and sodium bicarbonate. (assume that energy absorbed by the mixture of citric acid and sodium bicarbonate is released by the water.) • the reaction enthalpy, in joules/mole moles of citric acid heat absorbed by water change in internal energy (1) reaction enthalpy (l/mol) inital temp = 20.8 final temp = 29.2 change in temp 8.4

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Chemistry, 30.08.2019 17:10, mianelson367

Short answer stoichiometry by loss of co2 lab results record the following lab results in the table below. erlenmeyer flask # mass after reaction (g) 1 111.200 2 111.785 3 112.955 4 114.124 5 115.975 6 117.975 7 119.975 data analysis for each reaction, calculate, and record the following data. the molar mass of sodium carbonate is 105.99 g/mol and the molar mass of carbon dioxide is 44.01 g/mol. to determine the mass of reactants before the reaction, add the mass of sodium carbonate added to the mass of the flask and sulfuric acid. erlenmeyer flask # mass of flask before the reaction (g) number of moles of na2co3 mass of co2released (g) number of moles of co2released 1 111.65 9.44*10^-3 .4152 9.44*10^-3 2 112.615 18.87*10^-3 .8305 18.87*10^-3 3 114.615 37.74*10^-3 1.661 37.74*10^-3 4 116.615 56.61*10^-3 2.491 56.61*10^-3 5 118.615 75.48*10^-3 3.322 75.48*10^-3 6 120.615 94.35*10^-3 4.152 94.35*10^-3 7 122.615 113.22*10^-3 4.983 113.22*10^-3 create and save a graph of the number of moles of co2formed (y-axis) versus the number of moles of na2co3added (x-axis). click the graphing icon below to create your graph. use the graph to identify the limiting reactant in each of the flasks. limiting reactant- na2co3 conclusions suppose you used excess sulfuric acid in all the flasks. how many moles of co2would be released in flask 7? the molar mass of sodium carbonate is 105.99 g/mol. suppose you were to perform a similar experiment using hydrochloric acid instead of sulfuric acid. given the reactant quantities in the table below, how many grams of carbon dioxide will be formed in the reaction? the molar mass of sodium carbonate is 105.99 g/mol and the molar mass of carbon dioxide is 44.01 g/mol. mass of sodium carbonate 3.000 g volume of 4.00 m hcl solution 10.00 ml 3.00g/ 105.99 g/mol= 0.0283 mol na2co3 10ml * (1/1000ml) *4.00 m= 0.04 mol (0.02830 mole na2co3)*(2 mole hcl/1 mole na2co3) = 0.05660 mole hcl (0.04 mole hcl)*(1 mole na2co3/2 mole hcl) = 0.02 mole na2co3 (0.04 mol hcl)*(1 mol co2/ 2 mol hcl) = .02 mol co2 (0.02 mol)*(44.01 g/mol) = 0.8802 g co2 need with conclusion question 1 and did i do question 2 right?

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Chemistry, 06.10.2019 00:30, twistedhyperboles

The first step in the reaction of alka-seltzer with stomach acid consists of one mole of sodium bicarbonate (nahco3) reacting with one mole of hydrochloric acid (hcl) to produce one mole of carbonic acid (h2co3), and one mole of sodium chloride (nacl). using this chemical stoichiometry, determine the number of moles of carbonic acid that can be produced from 5 mol of nahco3 and 8 mol of hcl.

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Chemistry, 09.10.2019 01:00, jtaylor4061

The reaction of silver metal and dilute nitric acid proceeds according to the equation above. if 0.10 mole of powdered silver is added to 10.0 milliliters of 6.0 molar nitric acid, the number of moles of no gas that can be formed is a) 0.015 mole b) 0.020 mole c) 0.030 mole d) 0.045 mole e) 0.090 mole

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