Molar volume Study guides, Class notes & Summaries

Phase - Answer-Substance in a form of matter which is homogeneous throughout in chemical composition and physical state Transition - Answer-A change from one state to another at a characteristic temperature and a given pressure What happens to free energy between phase in a spontaneous process? - Answer-The free energy decreases between phases What happens to free energy as the pressure increases? - Answer-Free energy increases as pressure increases due to the fact that molar volume is al...

2023 AQA A-level PHYSICS 7408/2 Paper 2 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] A-level PHYSICS Paper 2 Friday 9 June 2023 Morning Time allowed: 2 hours Materials For this paper you must have: • a pencil and a ruler • a scientific calculator • a Data and Formulae Booklet • a protractor. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in th...

Chem Exam: Types of Calculation Questions & Answers 100% Verified Calorimetry Calculations: 1. 2.50 kJ of energy changes the temperature of a sample of lead by 8.52 degrees C. What is the mass of the sample? - ANS-Q = mcΔT m=Qc/Δt m = 2500/0.13(8.52) = 2.3×103 g 2. 950.3 J of energy is removed from 28.5 g of water at 80.3 degrees C. What is the final temperature? - ANS-Q = mcΔT −950.3 = 28.5(4.18)(T2 − 80.3) T2 = −950.3/(28.5)(4.18) + 80.3 = 72.3O C 3. A 30.56 g sample...

What molality of pentane solution is obtained by dissolving 5.0 g pentane, C5H12, in 245.0 g hexane, C6H14? Enter your answer with two decimal places and no units. Molar mass pentane: 72.15 g/mol Molar mass hexane: 86.18 g/mol - 0.28 5 g pentane x (1 mol/ 72 g)= 0.069 mol pentane 245g > .245 kg hexane 0.069 mol/ .245= 0.28 If an aqueous CsCl solution is 7.28% CsCl (by mass) and has a density of 1.05 g/mL at 20.°C,what is the expected boiling point of the solution? Kb = 0.51°C/m for ...

Mole - Answer-SI unit for measuring the amount of substance; Molar Mass - Answer-the mass of a mole of an element Representative particles - Answer-refers to the species present in a substance: usually atoms, molecules, or formula units Avogadro's number - Answer-the number of representative particles in a mole Avogadro's hypothesis - Answer-states that equal volumes of gases at the same temperature and pressure contain equal numbers of particles Molar volume - Answer-the quantity, 22.4...

AQA A-level PHYSICS 7408/2 Paper 2 Version: 1.0 Final *JUN* IB/M/Jun23/E7 7408/2 For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8–32 TOTAL Friday 9 June 2023 Morning Time allowed: 2 hours Materials For this paper you must have: • a pencil and a ruler • a scientific calculator • a Data and Formulae Booklet • a protractor. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • Yo...

PACT Science 7-12 Latest 2024 Graded A+ Ionic Character difference between in electronegativity between two atoms cation positively charged ions anion negatively charged ions Which organic compound smells like fruit? esters - mostly found in fruits Compound substance containing two or more chemical elements held together by chemical bonds What type of reaction is the process of fermentation? exothermic (converting sugar into alcohol) Molar volume of any gas at STP 22.4 ...

IB Chemistry SL Latest Update Graded A+ element a substance that cannot be broken down into simpler substances. atom smallest part of an element. compound substance that contains more than one element. empirical formula this shows the simplest whole number ratio of atoms of each element in a particle of the substance. molecular formula shows the actual number of atoms of each element in a molecule of the substance. structural formula this shows the arrangement of atoms an ...

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...

Version 1 1 CHAPTER 1 1) Which technique creates a three-dimensional dynamic image of blood vessels? A) Digital subtraction angiography B) Magnetic resonance imaging C) Dynamic spatial reconstruction D) Positron emission tomography 2) Magnetic resonance imaging is based on the movement of A) electrons in a magnetic field. B) carbons in a magnetic field. C) protons in a magnetic field. D) cells in a magnetic field. 3) The delivery of a radioactive compound to the body to study the met...