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For which of the following changes is it not clear whether the volume of a particular sample of an idea gas will increase or decrease?
A) increase the temperature and increase the pressure
B) Increase the temperature and decrease the pressure
C) Increase the temperature and keep the pressure constant
D) Keep temperature constant and decrease the pressure
E) decrease the temperature and increase the pressure
what mass of sucrose should be combined with 474 of water to make a solution with an osmotic pressure of 8.55 at 310 ?
Use the molar volume of a gas at STP to calculate the density (in g/L ) of carbon monoxide gas at STP.
A chemist prepares a solution by dissolving 4.168 g of NaNO3 in enough water to make 200 mL of solution. What molar concentration of sodium nitrate should appear on the label.
Calculate the change in pH when 3.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).
Draw all of the Lewis structures of NO2+ which obey the octet rule and use this Lewis structure or these resonance structures to predict how many covalent bonds connect each oxygen atom in the real structure to the central N atom.
How many champagne flutes (holding 180 ml) of Dom Pérignon champagne can a 80 kg person drink in Arizona before reaching the blood alcohol limit for extreme DUI?
Tetraphosphorus decaoxide reacts with water to form phosphoric acid, a major industrial acid. In the laboratory, the oxide is used as a drying agent.
Will the volume of a gas decrease, increase, or remain unchanged for each of the following sets of changes? a) The pressure decreased from 4 atm to 1520 mm Hg, while the temperature is decreased from 250°C to 212°F. b) The pressure is increased fr..
Find the molar solubility of BaCrO(4) exp (ksp=2.1 X 10(-10 EXP) in (a) pure water and (b) 1.5 X 10(-3 exp) M Na2CrO4.
What is the density of a substance if a 2.50mL sample has a mass of 0.880g at room temperature? ( show calculations) What is the specific gravity of the substance?
Naturally occurring gallium consists of two isotopes. one of those is 71Ga with an isotopic mass of 70.9247050 amu and an abundance of 39.892%. What is the mass number of the other isotope. How many atoms of phosphorous are in 4.60 mol of Copper(II..
A sample of pure NO2 is heated to 338 degrees C at which temperature it partially dissociates according to the equation
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