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How many moles of NaOH are present in 55.5 g of the compound? Express your answer to 3 significant figures?
How many moles of CCl4 are present in 18.3 g of the compound? Express your answer to 3 significant figures?
What is the mass (in grams) of one molecule of N2O4? Express your answer using scientific notation with two decimal places.
Example: 1.34 x 10-2 should be expressed as 1.34e-2
How many oxygen atoms are in 8.10 g of Al2(SO4)3? Express your answer using scientific notation with two decimal places.
Example: 1.31 x 10-2 should be expressed as 1.31e-2.
the normal boiling point of ethanol is 78 degrees celsius. if the vapor pressure of ethanol is 13.3 kpa at 34.9 degrees
Tf will be negative and so you must use negative Kf values. Either way, the freezing point of the solution should be lower than that of the pure solvent. Assuming 100% dissociation, Find the freezing and boiling points of 1.85 m Na2SO4(aq).
Why does K + N2 yield no reaction. could some one please explain what factors contribute to no reaction
How does the addition of aqueous NH3 to a solution separate and identify Cu2 and Bi3 ions? Why wouldn't the additon of a strong base, such as KOH, work just as well as the addition of aqueous NH3?
what is the density of the block? How to approach the problem The apparent mass of the object in the fluid, 5.6 , is equal to its mass in air, 50.0 , minus the mass of the displaced fluid
Using graphical techniques, calculate the distribution (i.e., the fraction) of chlorendic acid ( in uncharged, mono-anionic and di-anionic forms) at pH 3.5,5.0, and 7.5.
Calculate the standard enthalpy change for the reaction - energy of the emitted photon as well as the wavelength and frequency of electromagnetic radiation.
Mehtanol-water solutions behave as essentially ideal solutions (the activity coefficients which measure deviation from ideality are equal to or close to one).
what is the maximum number of electrons that can have a principal quantum number of 3 within one
What is the approximate Na+ ion concentration in a 0.75 M Na2CO3 solution? a. 0.375 M b. 0.75 M
where it is burned with 12% excess air. Calculate the required flow rate of air in SCMH(standard cubic meters per hour).
Explain how to do this problem a gas sample has a volume of 500 ml at 20 degree Celsius. Define at what temperature would the gas have a volume half as large
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