06:00Concept of Mole | Avogadro's Number | Atoms and Molecules | Don't MemoriseDon't Memorise401views
17:59Avogadro's Number, The Mole, Grams, Atoms, Molar Mass Calculations - IntroductionThe Organic Chemistry Tutor714views
Multiple ChoiceIf the molar mass of hydrogen is 1.008 g/mol, what is the mass (in grams) of 2 hydrogen atoms?639views13rankHas a video solution.
Multiple ChoiceA rigid container has a volume of 0.14m3. It contains a 200°C ideal gas at 1.2atm. How many moles are in the container?186views
Multiple Choice0.0076 moles of an ideal gas is at 24°C. If it is a sealed container with a volume of 86 cm3, what is the pressure of the gas?185views
Textbook QuestionThe molecular mass of water (H₂O) is 18 u. How many protons are there in 1.0 L of liquid water?220viewsHas a video solution.
Textbook QuestionHow many atoms are in a 2.0 cm×2.0 cm×2.0 cm cube of aluminum?119viewsHas a video solution.
Textbook QuestionAn element in its solid phase has mass density 1750 kg/m^3 and number density 4.39×10^28 atoms/m^3. What is the element's atomic mass number?112viewsHas a video solution.
Textbook QuestionCalculate the number of molecules/m³ in an ideal gas at STP.11viewsHas a video solution.
Textbook Question(I) If 3.50 m³ of a gas initially at STP is placed under a pressure of 2.80 atm, the temperature of the gas rises to 38.0°C. What is the volume?15viewsHas a video solution.
Textbook QuestionHow many moles of water are there in 1.00 L at STP? How many molecules?11viewsHas a video solution.
Textbook Question(II) A storage tank contains 21.6 kg of nitrogen at an absolute pressure of 3.45 atm. What will the pressure be if the nitrogen is replaced by an equal mass of CO₂ at the same temperature?12viewsHas a video solution.
Textbook Question(II) A tank contains 30.0 kg of O₂ gas at a gauge pressure of 8.20 atm. If the oxygen is replaced by helium at the same temperature, how many kilograms of the latter will be needed to produce a gauge pressure of 8.00 atm?11viewsHas a video solution.
Textbook Question"(II) Compare the value for the density of water vapor at exactly 100°C and 1 atm (Table 13–1) with the value predicted from the ideal gas law. Why would you expect a difference?<IMAGE>"13viewsHas a video solution.
Textbook Question(II) What is the pressure in a region of outer space where there is 1 molecules/m³ and the temperature is 3 K?14viewsHas a video solution.
Textbook QuestionEstimate the number of air molecules in a room of length 6.0 m, width 3.0 m, and height 2.5 m. Assume the temperature is 22°C. How many moles does that correspond to?12viewsHas a video solution.
Textbook Question"(II) Estimate the number of(a) moles. Assume water covers 75% of the Earth to an average depth of 3 km."9viewsHas a video solution.
Textbook Question(II) Estimate the number of(b) molecules of water in all the Earth’s oceans.Assume water covers 75% of the Earth to an average depth of 3 km.11viewsHas a video solution.
Textbook QuestionHow does the number of atoms in a 31.5-g gold ring compare to the number in a silver ring of the same mass?11viewsHas a video solution.