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A gas mixture with total pressure of 300 torr consists of equal masses of Ne(atimc weight 20) and Ar (atomic weight 40). What is the partial pressure of Ar in torr?
Aluminum will act as the stronger reducing agent and iron will act as the stronger oxidant. In the spontaneous reaction, the oxidation number of iron will increase.
Diethyl ether has a H°vap of 29.1 kJ/mol and a vapor pressure of 0.703 atm at 25.0°C. What is its vapor pressure at 85.0°C?
Since the sample is an unknown solid, I will have to make a solution without knowing exactly what to mix. In your expertise, how much of the solid do you expect to dissolve in what volume of water and what is your reasons for choosing these amount..
a sample of neon to escape from a hole in a container, how long would it take for an equal amount of nitrogen gas, N2, to escape
at 710. mm hg a sample of nitrogen gas occupies 625 ml. what volume does the gas occupy if the temperature remains
The metal used to make the US nickel coin is an alloy of 75% copper and 25% nickel. What maximum mass of alloy could be produced if only 450 kg of nickel and 1180 kg of copper were on hand?
a student had to prepare 250 ml of a silver nitrate solution of known molality. unfortunately the container did not fit
Hydrochloric acid (HCl) reacts with sodium carbonate (Na2CO3), forming sodium chloride (NaCl), water (H2O), and carbon dioxide (CO2). This equation is balanced as written
a 11.7 ml sample of a hcl solution has a ph of 2.000. what volume of water must be added to change the ph to
A section of membrane with an aquaporin (AQP) has a water transport rate of about 3 billion water molecules per second (3 × 109 molecules·s-1).
Small helium-neon lasers emit 3.50 mJ/s of light at 634 nm. How many photons does such a laser emit in one minute?
a 1L flask contained 2g N2, 0.4g H2 and 9g O2 at 27c. what is the total pressure in the flask?
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