Exothermic answer h - Study guides, Class notes & Summaries

Chemistry Thermochemistry Study Guide Test. The specific heat of iron metal is .450 J/g-K. How many J of heat are necessary to raise the temperature of a 1.05 kg block of iron from 25C to 88.5C? - CORRECT ANSWER (.450) (1050) (63.5) = 30,000.75 J/g How much heat energy, in Joules, is absorbed when 150 grams of water is warmed from 34.8C to 96.3C? - CORRECT ANSWER (150) (4.184) (61.5) = 38,597.4 J/g A chunk of silver has a heat capacity of 42.8J/C. If the silver has a mass of 181 grams...

ASU BIO 181 Exam Questions 100% Marking Scheme All Answers Here!!!! Which six elements are most important for the survival of life? - Answer -H, C, N, O, P, S The shared biochemistry of all life is often considered evidence for: - Answer -Shared common descent of all life on earth. Water has which property or properties? - Answer -Hydrophilic Forms hydrogen bonds Ocean acidification is resulting due to - Answer -Global release of CO2 through the use of fossil fuels Which other e...

Honors Chemistry Test 2 Questions with Answers Two reactant particles collide with proper orientation. The collision will be effective if the particles have - Answer-sufficient kinetic energy Given the equation: I2(s)--> I2(g) Which phrase describes this change? - Answer-endothermic physical change Given the balanced equation representing a reaction: Cu + S --> CuS + energy Which statement explains why the energy term is written to the right of the arrow? - Answer-Energy is release...

General Chemistry II Final Exam (ACS) UVU 273 Questions with Verified Answers If the pressure of a gas is increased at constant temperature, the volume ___. - CORRECT ANSWER Decreases If the pressure of a gas is decreased at constant temperature, the volume ___. - CORRECT ANSWER Increases If the volume of a gas is decreased at constant pressure, the temperature ___. - CORRECT ANSWER Decreases P ? T ? V ? - CORRECT ANSWER Pressure does the opposite of volume. Which of the following...

Chemical Thermodynamics 4.13 Unit Test || Questions & Answers (Rated A+) Chemical Thermodynamics 4.13 Unit Test || Questions & Answers (Rated A+) Which example is an exothermic reaction? - ANSWER - condensation Two objects (A and B) of the same temperature are in contact with each other. Which statement is true? - ANSWER - Although the molecules collide, no heat transfers because there is no temperature difference between the objects Which parameter is measured directly in a coffee-cu...

OCR A LEVEL ORGANIC CHEMISTRY YEAR 12 WITH VERIFIED QUESTIONS AND ANSWERS What is the melting and boiling points of alkanes like? - ANSWER--as chain length increases so does the strength of the intermolecular forces as there is greater surface area for contact between molecules and hence stronger london forces and therefore the melting/boiling points are highr for longer chain. What is a structura/chain isomer? - ANSWER--Same molecular formula but a different structural formula Wh...

The speed of a wave (c) is the product of its frequency (ν) and wavelength (λ). Correct Answer: E = hv = h x c / λ nm to m or m to nm Correct Answer: 1 m / 10^9 nm or 10^9 nm / 1 m What is the maximum number of electrons that can have the quantum numbers n = 3, ℓ = 2, mℓ = -2? Correct Answer: The Pauli exclusion principle states that no two electrons in a given atom can share the same set of four quantum numbers (n, ℓ, mℓ, ms). This set of quantum numbers contains three...

TEAS 6 SCIENCE- LIFE + PHYSICAL SCIENCES Questions And Answers 100% Rated A+. Name the 4 basic organic macromolecules. What are they produced by? - correct answer. 1. carbohydrates 2. lipids 3. proteins 4. nucleic acids *produced by anabolic reactions Name the 4 basic building blocks. What type of reactions are they involved in? - correct answer. 1. monosaccharides (glucose) for cabohydrates 2. amino acids for protein 3. fatty acids (glycerol) for lipids 4. nu...

Chemistry Thermodynamics Test Review || All Questions & Answers (Graded A+) Chemistry Thermodynamics Test Review || All Questions & Answers (Graded A+) What is the change in entropy? - ANSWER - Delta S What is the change in free energy? - ANSWER - Delta G What is the change in enthalpy? - ANSWER - Delta H What heat received by the chemical system from its surroundings? - ANSWER - Q as in Q=mcp(delta)T The internal energy of a system is ____ of the path taken in going from the ini...

FTCE Middle Grades Science 5-9 Exam Questions With 100% Verified Answers Correlation shows _____ not _____ - answerPositive & Negative....not cause & effect Which atom has the smallest mass? - answerElectrons = 0 What is an isotope? - answerAtoms of the same element that have different numbers of neutrons (top #) What are alpha particles represented by? - answerHe or a How do you find the amount of electrons in an isotope? - answerSubtract atomic #(protons) from mass #(protons+neutrons) ...