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why are we given a known and unknown hydrate ? what is the point of having a known sample ? why is it important ? do scientists give is a more 'generic' name, if so, what would a scientist call the known?
for a stadium that would be in the sun for long periods of day, excluding cost as a factor, why would you choose wood over aluminum or iron?
A 0.521-g sample of a compound is dissolved in enough water to form 100.0 mL of solution. This solution has an osmotic pressure of 2.45 atm at 25°C. If each molecule of the solute dissociates into two particles (in this solvent), what is the molar..
how many grams of sulfur are needed to react completely with 246 g of mercury to form HgS
Mixtures of helium and oxygen are used in scuba diving tanks to help prevent the bends, which is a condition caused by nitrogen bubbles forming in the bloodstream.
One hundred grams of water is saturated with NH4Cl at 50 degrees celsius . According to Table G, if the temperature is lowered to 10 degrees celsius, what is the total amount of NH4Cl that will precipitate.
water for the temperature of the trapped gas, will the calculated mass percent of metal in the sample be greater than, less than, or equal to real mass percent?
liquid nitrogen has a density of 0.807 g/ml at -195.8 C, if 1.00 L of N2 is allowed to warm to 25 C at a pressure
How many milliliters of 0.200 M NaOH would be neutralized by the HCl produced after 60 minutes? After 90 minutes? After 120 minutes?
Polly Esther determined the Ca2+ ion content of a 100 mL sample of calcium fortified orange juice. After adding 2.0 M HCl solution to the sample, she filtered the juice to remove the pulp and other particulate matter
how many grams of ice will still be present when the contents of the pitcher reach final temperaturethe tea is mostly water so assume that it has the same density (1g/mL), molar mass, heat capacity (75.3J/K/mol), and heat of fusion(6 kJ/mol) as pu..
Pressure of 0.923 atm is allowed to expand at constant temperature until its pressure reaches 0.377 atm. What is its final volume?
How many grams of ethylene glycol (C2H6O2) must be added to 1.10 kg of water to produce a solution that freezes
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