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what is the broglie wavelength of an electron moving at one-tenth the speed of light. mass of the electron = 9.109* 10^-28
Molar Mass of Sulfur based on molality, What would the molar mass of sulfur be based on the following data and information?
Water has vapor pressure of 23.8 torr at 25 degrees celsius. Find vapor pressure of water at 40 degrees celsius if delta H of vaporization is 40.7 KJ/mol.
Explain Molecular and Empirical Formulas, Ibuprofen, a headache remedy, contains 75.69% C, 8.80% H and 15.51% O by mass, and has a molar mass of 206g/mol.
Determine the precipitate that forms if silver nitrate aqueous solutions and KCl react to produce products in a double-replacement reaction.
A 2.50 g sample of white solid was vaporized in a 345 mL vessel. If the vapor has a pressure of 985 mmHg at 180°C, what is the molecular weight of the solid.
if molarity of a 2000ml solution is 4.0M NaCl, how many moles of NaCl are dissolved in that solution.
The solution of the question , a 0.3172 g sample containing only KCl and NaBr is dissolved in 50ml water and titrated with 0.1120M AgNO3 , requiring 36.14ml to reach the end point.
A gas has a pressure of 4.82035 atm when its volume is 2.75 L. What will the pressure be when the volume is changed to 1.91015 L, assuming constant temperature.
Initially A sample of a substance of 23.43 g weight has temperature 24.2 °C then it absorbs heat and reached to temperature 122.0 degree Celsius; calculate the specific heat of this substance if it absorbs 2167 joule heat
potassiumm chlorate (KClO3) decomposes to form potassium chloride and oxygen gas. if 5.4 moles of potassium chlorate decompose, how many moles of oxygen could be produce.
A solution containing 100g of an unknown substance and 900g of water. The solution has a Freezing Point of -3.33*C. What is the molar mass of the substance?
A star is 3.28 x 1014 km from Earth. How many days does it take for light to travel from the star to Earth?
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