Determine what is the molar mass of the substance
A solution containing 16.9 of a nonvolatile molecular compound in 250 g water has a freezing point of -0.744...What is the molar mass of the substance?
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The total volume of both metals is measured by the displacement of water to be 427cm^3 and the total mass is 4.36 kg . What percentage of the spheres are copper?
A 0.573g sample of nonvolatile solute is added to 15.6g of naphthalene and the mixture warmed until melted. The freezing point of the solute was determined and the found equal to 78.1 degress celsius.
Calculate the number of moles of N_2 dissolved per liter of blood, which is essentially an aqueous solution.
Reaction of NO with chlorine to yield NOCl is pseudo-first order if NO is present in a large excess. Determine the rate constant of this reaction if the partial pressure of NOCl increased from 0 to 100 Pa in 522 s staring with the initial pressure
A sample of an element has a volume of 81 mL and a density of 1.73 g/mL. What is the mass in grams of the sample (round to the nearest tenth)?
Given the tabulated data, what is the lattice energy of crystalline calcium chloride?
Your chemiluminescence reaction will actually occur very slowly in air. What component of air will bring about this reaction and what is its approximate concentration in air?
Granite rock has a specific heat capacity of 0.80 J·°C-1·g-1. A 15 g rock was warmed by 202 J of energy from sunlight. What was the increase in temperature of the rock (in °C)?
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