Chemistry, 13.11.2019 05:31 heavenwagner
Suppose a reaction was run that produces hydrogen gas and a sample of h2(g) collected. as a result of the collection 145 ml of water is displaced. the pressures of the gas and atmospheric pressure are equalized using the method described in this experiment. the atmospheric pressure is 745 mm hg. the temperature of the water and gas are identical at 22 c/ how many moles of h2 have have been evolved?
Answers: 2
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Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?
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Chemistry, 22.06.2019 13:30
1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6
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Chemistry, 22.06.2019 15:20
Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma
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Chemistry, 22.06.2019 22:30
[ou.03jthe pictures below show the wavelengths and intensities of electromagnetic radiations emitted by three stars, star 1, star 2, and star 3. intensity intensity- intensity- 1000 3500 6000 8500 11000 wavelength (a) star 1 1000 3500 6000 8500 11000 1000 3500 6000 8500 11000 wavelength (a) wavelength (a) star 2 star 3 which of these statements is correct about the color of the three stars? star 2 is white in color o star 2 is yellow in color star 1 and star 3 are yellow in color star 1 and star 3 are white in color
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Suppose a reaction was run that produces hydrogen gas and a sample of h2(g) collected. as a result o...
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