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What is the mole fraction of solute and the molal concentration for an aqueous solution that is 18.0% NaOH by mass?
Explain which element has higher ionization energy, Be or B. Start by comparing thier energy level diagram?
A student is given four solid samples labeled W, X, Y, and Z. All have a metallic luster. She is told that the solids could be gold, lead sulfide, mica (which is quartz or SiO2), and iodine.
A certain amount of glucose, C6H12O6 burned in oxygen, and produced 22 grams of carbon dioxide, CO2. How many grams of water was produced at the same time?
Two compounds have the same empirical formula. One substance is a gas, the other is a viscous liquid. How is it possible for two substances with the same empirical formula to have markedly different properties?
compute the volume of sodium hydroxide that is required to make a buffer with a pH = 5.77.? given that pKa = 4.77. and initial volume of the acid solution = 1.00 Litre.
Give the number of atoms of the specified element in a formula unit of each of the following compounds, and calculate the molecular (formula) mass
A 70.0 g steam sample at 150.0 degree Celsius was converted to ice at -150.0 degree Celsius, calculate the total amount of heat removed in the process.
How many grams of oxygen reacted with the phosphorus?
Neat, aliphatic, primary amines show two absorptions between 3400 to 3330 cm-1 and 3330 to 3250 cm-1 due respectively to asymmetrical and symmetrical stretch. Stretch at 3300 cm-1. Why do tertiary amines not absorb in this region of the spectrum?
Which reagent is used in excess? How great is the molar excess (how many times greater)? I'll add the procedure images in the comments
Other than S=C=S; can I have S triple bonded to C single bonded to S? Wouldn't there be three electrons left on the triple bonded S; it would be sharing three when it started with six I don't understand? Help please.
What is the equilibrium constant for the reaction N2(g) + 3 H2(g) ?? 2 NH3(g) at this temperature?
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