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True or False: When a chemical process releases heat, it is said to be exothermic. - ANSWERStrue AnswerTrue or False: Burning a match must be an endothermic process overall because friction was needed to ignite the match. - ANSWERSfalse AnswerTrue or False: Energy can be defined as the ability to do work. - ANSWERStrue AnswerTrue or False: All chemical processes are easily reversible - ANSWERSfalse AnswerTrue or False:In a chemical reaction, the kinetic energy of the system is contai...

A dining room table measures 4.3 ft in length. How many inches does this represent (1 ft = 12 in). - ANSWERS52 in AnswerHow many cups are in a 61-oz pitcher of lemonade? (8 fluid ounces = 1 cup) - ANSWERS7.6 cups Answer0.154 kg = _______ g = ______ mg - ANSWERS1.54 x 10² g, 1.54 x 10⁵ Answer1.85 ft = _________ in = __________ cm - ANSWERS2.22 x 10¹ in, 5.64 x 10¹ cm Answer5.61 m/s = ______ km/hr = _______ mi/hr - ANSWERS2.02 x 10¹ km/hr , 1.25 x 10¹ mi/hr AnswerBaking soda ...

TeO₂ - ANSWERSpolar AnswerNNO - ANSWERSpolar AnswerNH₃ - ANSWERSpolar AnswerH₂O - ANSWERSpolar AnswerSeO₃ - ANSWERSnon-polar AnswerCF₄ - ANSWERSnon-polar AnswerWhich of the following compounds exhibit at least one bond angle that is approximately 120°? a) SF₂ b) SO₃ c) SeO₂ d) CI₄ e) PF₃ f) NNO - ANSWERSSO₃, SeO₂ Answer

What should you do when you first pick up your inoculating loop? a. Sterilize it by dipping it ethanol then passing it through the flame of your Bunsen burner b. Flame sterilize it from stem to loopIncorrect Make sure the wire is straight c. Sterilize it by dipping it into ethanol d. Flame sterilize just the loop - ANSWERSFlame sterilize it from stem to loopIncorrect Make sure the wire is straight AnswerIf you have immersion oil on your slide, which objective can you not use? a. 4X b. 1...

effective nuclear charge - ANSWERSthe nuclear charge felt by an electron when both the actual nuclear charge and the repulsive effects of the other electrons are taken into account Answeratomic radius - ANSWERSone-half the distance between the nuclei of identical atoms that are bonded together AnswerValence electrons determine an atom's - ANSWERSchemical properties Answerwhen a metal and non metal combines, metals - ANSWERSlose electrons to become more positive Answereffective nuc...

First question was filling out a box determining which reactions created precipitates. - ANSWERS AnswerBalance the equation: ___ LiAlH₄(s) + __ AlCl₃(s) → ___ AlH₃(s) + __ LiCl(s) - ANSWERS3,1,4,3 AnswerBalance the equation: ___ Fe(s) + ___ Br₂(l) → ___ FeBr₃(s) - ANSWERS2,3,2 AnswerBalance the equation: ___ Al₄C₃ + ___ H₂O → __ Al(OH)₃ + __ CH₄ - ANSWERS1,12,4,3 AnswerBalance the equation: __ H₂SO₄(aq) + ___ NaCl(s) → ___ Na₂SO₄(aq) + __...

Write the balanced equation for the combustion of isooctane (C₈H₁₈) to produce carbon dioxide and water. Use the smallest possible integers to balance the equation. - ANSWERS2C₈H₁₈ + 25O₂ → 16CO₂ + 18H₂O Assuming gasoline is 90.0% isooctane, with a density of 0.692 g/mL, what is the theoretical yield (in grams) of CO₂ produced by the combustion of 1.67 x 10¹⁰ gallons of gasoline (the estimated annual consumption of gasoline in the U.S.)? Remember, there are 3.785 lite...

Coulomb's Law can be applied to: - ANSWERS- two charged objects of any shape, as long as they are much smaller than the distance between them - point charges If an object is "neutral", that means the object: - ANSWERShas exactly the same number of protons as it does electrons The electric field does not depend on... - ANSWERSthe magnitude of the charge q used to probe the field the electric field exerts... - ANSWERSan electric force on charges an electric field points... ...

(1.419 - 2.91 - 12.215 ) x (4.59 -1.761 ) - ANSWERS-38.8 (1493 + 24.79 )/0.6677 - ANSWERS2.273 x 10³ Convert 4.3 miles to centimeters. (look at LC for conversion units) - ANSWERS6.9 x 10⁵ cm The density of a sample of an unknown solid is 12.1 g/cm³. Convert this density to to units of lb/ft³. (look at LC for conversion units) - ANSWERS755 1 mL is equal to 1 cm³. - ANSWERSTrue The sum of 32.255 + 2.139 should contain four significant figures. - ANSWERSFalse The length 10 c...

The equilibrium constant (Kp) is 0.16 at a particular temperature for the reaction: N₂O₄(g) ⇌ 2NO₂(g) Given the following sets of initial conditions, what is the net change that must occur for the reaction to reach equilibrium? Does the reaction shift left to reach equilibrium, does the reaction shift right to reach equilibrium or is the reaction at equilibrium at these initial concentrations so no net change will occur? a) P(NO₂) = 0.130 atm, P(N₂O₄) = 0.06 atm b) P(NO₂) =...