Moles and molar mass - Study guides, Class notes & Summaries

Intermolecular forces and how they affect physical properties /purification techniques: dipole-dipole, electrostatic, hydrogen, ion, london, - Answer-*dipole-dipole*: polar covalent molecules such as aldehydes and ketones. positive and negative end. polar molecules must be close together for force to be significant. weaker than ion-dipole forces; increase with polarity of molecule. *electrostatic*: occur between charged species, cations and anions, and are responsible for very high MP and B...

LUOA chemistry semester exam review questions and answers 2024 with complete solution How many molecules are in 3.9 moles of water? - Answer ️️ -2.3 x 10^24 molecules of water How many moles are in 3.75 x 10^24 molecules of CO2? - Answer ️️ -6.23 moles How many moles are in 1.16 x 10^25 atoms of H2CO3? - Answer ️️ -19.3 moles of H2CO3 The molar mass of Cu(OH)2 is _________ grams per mole. (Hint: Answers might vary slightly, but should still fall within an acceptable range for t...

BTEC Applied Science Unit 1 Chemistry (Graded) How many electrons can a d subshell hold? correct answer10 Which subshells are available in the first energy level? correct answers Which subshells are available in the second energy level? correct answers and p Which subshells are available in the third energy level? correct answers, p and d What is Hund's rule? correct answerOrbitals must all be singly filled before they can be doubly occupied Which elements do not fill the 4s subshell befor...

CHM 1100C QUIZ 3 with 20 Updated Questions and Answers Graded A+;Rasmussen College CHM 1100C QUIZ 3 with 20 Updated Questions and Answers Graded A+;Rasmussen College 1. What is the molecular formula for strontium hydroxide? a. Sr (OH )2 b. Ba( OH )2 c. S e (OH )2 d. S t (OH )2 2. Xylose is a carbohydrate that contains carbon, hydrogen, and oxygen. The empirical formula of Xylose is CH2O, and its molar mass is 150.1g/mol. Find the molecular formula of Xylose. a. C5 H 10 O5 b....

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) ...

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) ...

What are 4 measures of pressure? Correct Answers mmHg Torr Atm Pascal What unit is equal to mmHg? Correct Answers Torr What is the conversion of atm to mmHg? Correct Answers 1 atm= 760 mmHg What is the conversion of atm to psi? Correct Answers 1 atm= 14.7 psi What is Boyle's Law? Correct Answers P1V1= P2V2 Inverse relationship Constants are temperature and amount of gas Charles Law Correct Answers V1/T1=V2/T2 volume and temperature are linearly related Pressure and amount...

Straighterline Chemistry Final Exam Questions and Answers | Latest Version | 2024/2025 | Already Passed What is the primary purpose of a catalyst in a chemical reaction? To increase the equilibrium constant To increase the rate of the reaction To shift the position of equilibrium To lower the activation energy required for the reaction Which of the following represents the correct electron configuration for an oxygen atom? 1s2 2s2 2p2 1s2 2s2 2p4 1s2 2s2 2p3 1s2 2s2 2p4 In...

P=F/A - Answer-pressure equals force divided by area Boyle's Law - Answer-they volume of a fixed quantity of gas at constant temperature is INVERSELY proportional to the pressure Boyle's Law equation - Answer-PV=K Charles's Law - Answer-The volume of a fixed amount of gas at a constant pressure is directly proportional to its absolute temperature Charles's Law Equation - Answer-V/T=K Avogadro's Law - Answer-The volume of a gas at constant temperature and pressure is directly proport...

Chem 101 Final Exam Questions And Answers 100% Solved Determine the formula weight of KBr - answer119.00 amu Determine the mass in grams of 3.00 x 10^21 atoms of arsenic. (The mass of one mole of arsenic is 74.92 g.) - answer0.373 g Fill in the blank: A mole is defined as the number of carbon atoms in _____ g of pure ^12C. - answer12 How many atoms are in 1.2 mol of carbon? - answer7.2264 x 10^23 Which one of the following contains the most moles of oxygen atoms? A) 1 mol of Fe(C2H3O2)3...