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Considering only ions with charges of +1, +2, -1 and -2, or neutral atoms, give the symbols for 4 species that are isoelectronic with Ar
A solution of M(NO3)2 is electrolyzed. When a constant current of 2.50 amperes is applied for 35.0 minutes, 3.06 grams of the metal M is deposited. calculate the molar mass of M and identify the metal
How many nucleotides are needed to code for a polypeptide with eleven amino acids
From the reaction of 0.1000 g of solid granular tin with 0.1000 g of solid iodine in 3.0 mL of solvent methylcyclohexane (density = 0.770 g/mL) was isolated 0.0740 g of an iodide of tin as the sole product of the reaction.
The lattice points in zinc chloride are occupied by molecules while the lattice points in zinc metal are occupied by atoms.
A 70.0 silver object and a 40.0 gold object are both added to 45.5 of water contained in a graduated cylinder. What is the new water level in the cylinder?
neutral compound show traces of an acid as an impurity wheras the acid might not show any traces of a neutral compound?
The density of hydrogen gas in a flask is 0.147 g/L at 305 K. what is the pressure inside the flask? Calculate the density in G/L of CH4(g) at 75 Celsius and 2.1 atm (R= .08206 L*atm/mol*K).
What is the molarity of a solution prepared by dissolving 4.92 g of calcium nitrate, Ca(NO3)2, in 250 mL of water? (The molar mass of Ca(NO3)2 is 164 g/mol.)
What amount of solid NaOH must be added to 1.0 L of a 0.15 M H2CO3 solution to produce a solution with [H+]=3.3*10^-11 M ? There is no significant volume change as the result of the addition of the solid.
Identifying An Unknown Liquid And Precipitate. A high-boiling bp = 202 - 204 degrees C, burns with a yellow, sooty flame. Sodium fusion indicates that halogens, nitrogen and sulfur are not present. It is not soluble in water, dilute sodium bicarbo..
A student takes 195. g of BaCl2, and reacts it according to the following equation: 3BaCl2 + Al2(SO4)3 → 3BaSO4 + 2AlCl3 How many moles of AlCl3 are formed?
When using a medicine dropper or a meat baster, you squeeze the rubber bulb and insert the end of the tube into a liquid. Why does the liquid rise inside the dropper or baster when you release the bulb?
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