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A sample of 6.022 g of CH4 is enclosed in a 12 L container at 402 K. What is its pressure in atmospheres?
Two students measure the density of gold. One works with a 100-g bar of pure gold. The other works with a 200-g bar of pure gold. Which student measures the larger density.
Calculate How many grams of pure, solid sodium hydroxide are needed to make 500 mL of 0.15M NaOH solution and also express the answer in just 2 significant figures?
An electron traveling at the velocity of 3.7 105 m/sec has an uncertainty in its velocity of 2.34 105 m/s. determine the uncertainty in its position?
What volume of O2 at 684mmHg and 37degree celsius is required to synthesize 22.0 mole of NO2.
If 93 of heat are added to a pure gold coin with a mass of 11 , what is its temperature change? Specific heat capacity of gold is 0.128?
How many grams of methanol must be added to 7.50kg of water to lower its freezing point to -15.0^circ C? For each mole of solute, the freezing point of 1 {rm kg} of water is lowered 1.86 ^circ {rm C}
4.00g of H2SO4 solution was diluted with H2O and added with excess of cacl2, and The washed and dried precipitate of BaSO4 weighted 4.08g. Calculate percent H2SO4 in the original acid solution.
A sample of 2.376 g ether (The compound known as diethyl ether [(C2H5)2O], commonly referred to as ether, contains carbon, hydrogen, and oxygen) was combusted in an oxygen rich environment to produce 2.887 g of H2O (g) and 5.643 g of CO2 (g).
Given the unbalanced equation: Ag2CO3 ® Ag + O2 + CO2, how many moles of Ag can be produced from 2.5 moles of Ag2CO3.
The density of titanium metal is 4.51g/cm3 at 25 degrees celsius. What mass of titanium displaces 125.0mL of water at 25 degrees celsius.
Compute the changes in the degree of polymerisation and the rate of the polymerisation caused by raising the temperature of polymerisation of styrene in C6H6, initiated by azobisisobutyronitrile from 60 0C to 70 0C.
Calculate the pH of a solution that is .150 M in sodium formate and .200 M in formic acid (Ka=1.8*10^-4)
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