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Question- A 10.0 L balloon contains helium gas at a pressure of 655 mmHg. What is the new pressure of a helium gas at 20.0 L, if there is no change in temperature?
I am stuck in between this question please help me out
What is the pH of a solution that is formed at 25C by combining 300 mL of 0.040 M NaOH with 400 mL
a cell depositing Cu from a Cu2+ bath operates for 10 hours with an average current of 5.8 A. if 65.3 g of copper is deposited, at what efficiency is the cell operating?
Ethanol is frequently present in solvent -grade diethyl ether. If this grade rather than anhydrous were used what effect would the ethanol have on the formation of the grignard reagent
What would happen to the melting point if this unknown were mixed with (a) an equal quantity of pure acetanilide. (b) an equal quantity of benzoic acid
Chromium metal can be produced from the high temperature reaction of Cr2O3(chromium(III) oxide) with silicon or aluminum by each of the following reactions
the order reads 12000 units of heparin for your patient. the vial on hand is labeled 10000 units per cc. how many cc
CaC2 (s) + 2H2O (l) → C2H2 (g) + Ca(OH)2 (aq) If 32.0 g CaC2 are consumed in this reaction, how many moles of H2O are needed?
calculate the number of pounds of co2 released into the atmosphere when a 18.0-gallon tank of gasoline is burned in an
It takes 47.0 J to raise the temperature of an 9.20 g piece of unknown metal from 13 degrees Celsius to 24.9 degrees Celsius. What is the specific heat for the metal
Calculate the amount (mL) needed of a 4.0 M phenylmagnesium chloride in THF solution to give 1.5 equivalents based on the amount of starting material used. Starting material needed
calculate the rotational constant b for h2gand d2gin unite of frequency. rationalize the trend in rotational constant
Calculate the standard Gibbs energy and the equilibrium constant at 298 K and 400 K for the reaction, PbO(s) + CO(g) = Pb(s) + CO2(g).
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