Molar volume - Study guides, Class notes & Summaries

AS level OCR Chemistry Exam Questions And Answers (Verified And Updated) Isotopes - answerDifferent atomic forms of the same element. Atoms with the same number of protons but a different number of neutrons Relative atomic mass - answerThe mean mass of an atom of an element, compared to 1/12th of the mass of an atom of carbon-12 Concentration= - answerNumber of moles ÷ Volume One mole - answer6.02×10^23 Number of moles= - answermass ÷ molar mass r.t.p - answer25 ºC 100 kPa (1 atm) ...

Isotopes Different atomic forms of the same element. Atoms with the same number of protons but a different number of neutrons Relative atomic mass The mean mass of an atom of an element, compared to 1/12th of the mass of an atom of carbon-12 Concentration= Number of moles ÷ Volume One mole 6.02×10^23 Number of moles= mass ÷ molar mass r.t.p 25 ºC 100 kPa (1 atm)

CHEM-C125 ASSESSMENT TEST QUESTIONS WITH CORRECT ANSWERS A solid sample contains both NaOH and NaCl. 0.500 g of this solid sample was dissolved in water to make a 20.0 mL solution and then this solution was titrated by 0.500 mol/L HCl solution. If 22.5 mL of HCl was used to reach the end point, what is the mass % of NaOH in the original solid sample? NaOH + HCl --> NaCl + H2O - Answer- 90 During titration, it is very common to have some NaOH spilled to the inside wall of Erlenmeyer fl...

Empirical formula A formula which shows the simplest whole number ratio of atoms of each element in a compound Molecular formula A formula which shows the actual number of atoms of each element in a molecule Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Brainpower Read More Molar Gas Volume The volume of one mole of gas under specified conditions of temperature and pressure e.g 293K and 1 atmosphere pressure Homo...

Capstone Maternal Newborn ATI Exam Practice Questions and Answers 100% Pass What hormone is the basis for pregnancy testing? - Correct Answer ️️ -Human chorionic gonadotropin Excreted by the placenta and promotes the excretion of progesterone and estrogen. Uterine fibroid - Correct Answer ️️ -Can increase the risk for postpartum hemorrhage due to the increase in blood supply to the uterus, which supports the fibroid. Will undergo serial US examinations during pregnancy to monitor ...

Core practical 1 - measuring the molar volume of gas METHOD [7] METHOD: 1. known volume of ethanoic acid in boiling tube 2. place 0.05g of calcium carbonate in test tube 3. weigh contents 4. tip contents into ethnic acid and seal with bung 5. measure volume of gas produced, collected in a measuring cylinder over a water bath 6. Reweigh the test tube 7. Repeat experiment increasing the mass of calcium carbonate by 0.05g each time. do not exceed 0.4g of calcium carbonate core practical ...

What is Fick's Law? What influences diffusion - Answer-The molar flux due to diffusion is proportional to the concentration gradient F=kA((c1-c2)/d)) - Answer-F is rate of diffusion K is diffusion constant A is surface area for diffusion D id distance for diffusion (ex: membrane thickness) C1-C2 is difference in concentration How does the diffusion of uncharged and charged particles differ? - Answer-Uncharged particles diffuse irrespective of the concentration of each other. Charged par...

Chem 219: Exam 3 Questions With 100% Correct Answers Avogadro's Law equal volumes of gases at the same temperature and pressure contain equal numbers of molecules Boyle's Law Boyle's Law states that at constant temperature and moles, pressure and volume are inversely proportional. Mathematically this is written as: PV = PV Charles' Law the law that states that for a fixed amount of gas at a constant pressure, the volume of the gas increases as the temperature of the gas increases ...

Atomic number - correct answer Number of protons in an element Mass number - correct answer Number of protons and neutrons Ion - correct answer Electrically charged particle formed by the loss/gain of electrons Relative masses of P,N and E - correct answer 1,1, 1/2000 (respectively) Isotopes - correct answer Atoms of the same element with different number of neutrons but same number of protons. What are steps of mass spectroscopy? - correct answer Ionisation, Acceleration, Deflect...

Clinical Chemistry Exam 1 & (Book Chapters 1,2,3,4 Review Questions) Rated A+ Reverse osmosis (RO) is describes as a process: In which water is forced through a semipermeable membrane that acts as molecular filter. Activated carbon filters remove: Organic Compounds from water A 0.22 micron filter will remove: Particles with a diameter of 2.2 microns The unit of resistivity is: MQcm The electrical resistance measured between opposite faces of a 1.00 cm cube of an aqueous solution at a specifi...