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1.2 L sample of gas is determined to contain 0.5 moles of nitrogen. At the same temperature and pressure, how many moles of gas would there be in a 20 L sample?
a how many grams of sodium lactate should be added to 1.00l of 0.150 m lactic acid to form a buffer solution with ph
Calculate the concentration of Cu in the chloroform phase if 39 mL of a 0.28 M aqueous Cu solution buffered to pH 4 is equilibrated with 12 mL of chloroform.
State the equation which illustrates the strong electrolyte Ca(NO3)2(s) dissolving in water. Comprise states of matter (s, g, l, aq) and correct coefficients.
Consider the following specific heats: copper, 0.384 J/g·?C; lead, 0.159 J/g·?C; water, 4.18J/g·?C; glass, 0.502J/g·?C. If the same amount of heat is added to identical masses of each of these substance
A stock solution has a concentration of 50%. What is the final concentration if we mix 1 part of the solution to 4 parts of water
derieve an expression for the compression factor z of a gas that obeys the equation of state pv-nbnrt where b and r are
Calculate the energy of an electron in a hydrogen atom when it resides in the n=3 level. State your answer in joules. plz show explanation along with answer
Question- What quantity of ethylene glycol, HOCH2CH2OH, must be added to 50 grams of water to raise the boiling point by 1.0 C
calculate the reaction rate of potassium iodide and hydrogen peroxide to include the order of reaction.
In the reaction between glucose and oxygen 10.0 g of glucose reacts and 7.50 L of carbon dioxide is formed. What is the percent yield if the density of CO2 is 1.26 g/L?
A student is given a sample of pure gaseous element in a spherical container.The student measures the physical properties of the container and determines that it is 0.409 M in diameter and the gas inside it has a mass of 51.10 g.
prove the presence of the cations listed : Sn2+ , cd2+, Cu2+, Bi3+. write four paragraphs about these cations a paragraph each?
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