1. chemistry

    Nitrogen monoxide reacts with hydrogen gas to form nitrogen gas and water (vapor). Write a balanced equation for this reaction. the reaction is experimentally found to be (approximately) first-order in H2 and second-order in NO. Write down the form of the
  2. Chemistry-Repost for DrBob222

    The reaction OH- + NH4+ = H20 + NH3 is kinetically first order in both reactants' concentrations. The rate constant is 2e10 1/M s. If 50 ml of .01 M NaOH is mixed with 50 ml of .01 M NH4CL, find the time required for the OH- concentration to reach 1e-4 M.
  3. Reaction Engineering

    The irreversible elementary reaction 2A ---+ B takes place in the gas phase in an isothermal tubular (plug-Jlow) reactor. Reactant A and a diluent C are fed in equimolar ratio, and conversion of A is 80%. If the molar feed rate of A is cut in half, what is
  4. Math

    A solid sphere of 1.46kg and radius 0.1m, is rolling down a rough plane that is inclined at an angle 30 degrees to the horizontal. The 3 forces acting on the sphere are its weight, friction force and the normal reaction. The sphere starts rolling down when
  5. Math

    A solid sphere of 1.46kg and radius 0.1m, is rolling down a rough plane that is inclined at an angle 30 degrees to the horizontal. The 3 ferces acting on the sphere are its weight, friction force and the normal reaction. The sphere starts rolling down when
  6. Chemistry

    H6P6: Urbium Oxide First Part of the Question: Urbium (Ur) is an upscale element found in big cities. Its oxide (UrO2) is not very stable and decomposes readily at temperatures exceeding 66∘ C. The figure below shows how the rate of reaction varies
  7. Chemistry

    Estimate the temperature where Delta G = 0 for the following reaction (Given: Delta H=-176 and Delta S = -284.5 J/K NH3 + HCl --> NH4Cl
  8. chemistry hellllllllllllllllllp

    Oxidising and reduction- Chemistry? Oxidation and reduction can be described as the loss and/or gain of electrons from an ion or atom (species) in a chemical reaction. For the following aqueous reaction, select the species that is oxidized and similarly
  9. Chemistry

    (a) Which of the following are requirements for anionic polymerization? 1-A double bond 2- End groups which can react by releasing a small molecule 3- A strong base to initiate the reaction 4- A strong acid to initiate the reaction 5- An
  10. Anatomy

    I'm posting this again today hoping someone can clarify this for me- I have two question 1.In a dehydration synthesis reaction which of the following occur- a. hydrogen and oxygen are removed from the reactant b. water is added to the reactants c. water is
  11. Chemistry-DrBob222

    Arrows disappeared from below added them back to the equations. ??(a) I don't understand ln(No/N)=akt Is (a) -3.77 The decomposition of IBr(g)into I2 (g) and Br2 (g) is first order in IBr with k = 0.00255/sec. (a)Starting with [IBr] = 1.50M, what will
  12. Chemistry

    Phosphorus pentachloride decomposes according to the chemical equation: PCl5(g)<--> PCl3(g)+Cl2(g) Kc = 1.80 at 250 degrees Celsius A 0.352 mol sample of PCl5(g) is injected into an empty 4.45 L reaction vessel held at 250 °C. Calculate the
  13. physics

    An 6.00 g bullet is fired into a 2.30 kg block initially at rest at the edge of a frictionless table of height 1.00 m. The bullet remains in the block, and after impact the block lands 2.00 m from the bottom of the table. Determine the initial speed of the
  14. Chem

    Calculate the value of Qc for the reaction above if 2.30 moles of NO2, 1.50 moles of NO, and 1.20 moles of O2 are placed in a 3.50 liter container at 30°C. Kc = 0.440 at this temperature.
  15. Chemistry

    What would be the product of a reaction between methanal and pyrrolidine in acid? I know that normally a reaction between a carbonyl and a secondary amine would form an enamine. Here I am confused because there are no hydrogens that can be removed to form
  16. chemistry

    4NH3 + 5O2 → 4NO + 6H2O 2NO + O2 → 2NO2 3NO2 + H2O → 2HNO3 + NO In this process, the NO made in the last reaction is recycled back into the second reaction and used as a reactant. In the end, all of the NO produced is recycled back so
  17. Chemistry

    Dinitrogen tetroxide decomposes according to N2O4 (g) = 2NO2 (g) In a certain experiment, N2O4(g) at an initial pressure of 0.554 bar is introduced into an empty reaction container; after equilibrium is established, the total pressure is 0.770 bar. A
  18. Science

    Imagine you designed an experiment that investigated the effect of feeding yeast cells different concentrations (0, 5, 10, 15, 25%) of sugar solutions. The yeast used the sugar to do cellular respiration and make CO2 as a waste product. The volume of CO2
  19. Chemistry

    Which of the following statements is incorrect concerning the thermochemical equation below? 2SO3(g)  2SO2(g) + O2(g); H° = 198 kJ a. The enthalpy of the reactants exceeds that of the products. b. The reaction is endothermic. c. For the
  20. Chemistry

    Which of the following statements is incorrect concerning the thermochemical equation below? 2SO3(g)  2SO2(g) + O2(g); H° = 198 kJ a. The enthalpy of the reactants exceeds that of the products. b. The reaction is endothermic. c. For the
  21. c

    The voltage of an electrochemical cell depends on the redox reaction occurring in the cell. Given a redox reaction below: Zn(s) + Pb2+(aq) --> Zn2+(aq) + Pb(s) Pb2+(aq) + 2 e--->Pb(s)Eº = -0.13V Zn2+(aq) + 2 e--->Zn(s)Eº = -0.76V Calculate the
  22. Chemistry

    Based on pressure values for each component of the reaction, what is the value of the reaction quotient, Q? Equation: C2H2 + 2 H2 -> C2H6 C2H2 has a pressure of 5.05 atm H2 has a pressure of 4.35 atm C2H6 has a pressure of 0.0225 atm
  23. Chemistry

    Based on pressure values for each component of the reaction, what is the value of the reaction quotient, Q? Equation: C2H2 + 2 H2 -> C2H6 C2H2 has a pressure of 5.05 atm H2 has a pressure of 4.35 atm C2H6 has a pressure of 0.0225 atm
  24. chemistry

    what is the oxidation half reaction, reduction half reaction, and the complete balanced reaction of the following? (a) Al(s) + MnO4‾(aq) → MnO2(s) + Al(OH)4‾(aq) (b) Cl2(g) → Cl ‾(aq) + ClO ‾(aq) (c) NO2‾(aq) +
  25. Chemistry

    When 50 grams of hydrocarbon X are burned with oxygen the products are carbon dioxide and water. If 65 grams of water and 100 grams of carbon dioxide are produced, how many grams of oxygen were needed for the reaction? This was a question on my chemistry
  26. Chemistry

    Following question I need help with part b) Please verify my answer for part a) too if possible. Consider the following reaction for silver tarnishing: 3Ag2S(s) + 2Al(s) -> 6Ag(s) + Al2S3(s) a. State the oxidation number for each element in the
  27. Chemistry: Answer check please!

    1. Reactions follow the law of conservation of mass. a.) True b.) False Answer: True 2. Reactants are the materials used in a chemical reaction. a.) True b.) False Answer: True 3. In a chemical equation, the mass on the left of the arrow equals the mass on
  28. CHEM 1A

    Balance the following oxidation-reduction reactions, which occur in acidic solution, using the half-reaction method. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer.) Br ‾(aq) +
  29. Physics

    A projectile, fired with unknown initial velocity, lands 18.4 s later on the side of a hill, 2740 m away horizontally and 469 m vertically above its starting point. (Ignore any effects due to air resistance.) (a) What is the vertical component of its
  30. chemistry

    Carbon monoxide gas and hydrogen gas are mixed in a two liter flask. The reaction produces methanol gas as the only product. At equilibrium the Keq is 1.1 x 10-5. The flask initially held 6 grams of hydrogen and the equilibrium concentration of hydrogen is
  31. Science

    4)Explain why,when a soccer ball is kicked, the action and reaction forces don't cancel each other. a)The force of the player's foot on the ball greater than the force on the ball on the player's foot. b)They act on two different objects. c)The reaction
  32. Chemistry - Concentration and Time

    1. How is the rate affected by doubling the concentratino? 2. Explain the effect of concentration on the rate of a reaction in terms of the "Collision Theory" of chemical reactions. 3. Considering that 1/Time is proportional to the rate of the reaction how
  33. chemistry

    2C2H2(g) + 5O2(g)→4CO2(g) + 2H2O(g) a. Determine the enthalpy change for the reaction. ΔH = (4(-393.5)+ 2(-241.8)) – (2(227) + 5(0)) The enthalpy change is -2511.6. b. Determine the entropy change for the reaction. ΔS = (4(213.7)+
  34. physics

    A piece of iron block moves across a rough horizontal surface before coming to rest. The mass of the block is 1.8 kg, and its initial speed is 3.8 m/s. How much does the block's temperature increase, if it absorbs 69% of its initial kinetic energy as
  35. AP Chemistry

    Consider the following reaction: CH3X + Y --> CH3Y + X At 25 degrees Celcius the following two experiments were run, yielding the following data: Experiment 1: [Y]0 = 3.0 M [CH3X] (mol/L) Time (hours) 7.08*10^-3 1.0 4.52*10^-3 1.5 2.23*10^-3 2.3
  36. physics

    A cannonball is shot (from ground level) with an initial horizontal velocity of 33.0 m/s and an initial vertical velocity of 25.0 m/s. What is the initial speed of the cannonball?
  37. check.

    12. The substance produced by the light-reaction and used in the light-independent reaction is A. water B. oxygen C. hydrogen D. carbon dioxide hi there so I belive that the answer is b or d but i am leaning more toward b is that correct? Your question is
  38. Chemistry

    using the gas laws, What is V in the table below? initial: 1420 torr 75 mL 200 K Final: 760 torr V 360 K What is T using the gas laws? Initial: 91.8 mL 365 K Final: 45.8 mL T
  39. Chemistry

    A student is given a 5.000g sample to analyze composed of tin metal with a small amount of a zinc impurity. The student dissolves the metal in concentrated nitric acid, allows the reaction to continue to completion, and heats the mixture to leave 6.341g of
  40. Chemistry

    One proposed design for a Mars rover uses a methane gas fuel cell as its power supply. The methane fuel can be made on Mars using a chemical reaction that has been known for over 100-a the Sabatier methanation reaction: C02(g) + 4H2(g)<--> CH4(g)
  41. chemistry

    Carbon Dioxide reacts with water in blood plasma to form carbonic acid.Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and when you leave the blood. Explain what determines how
  42. CHEMISTRY

    Carbon Dioxide reacts with water in blood plasma to form carbonic acid.Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and when you leave the blood. Explain what determines how
  43. chemistry

    Carbon Dioxide reacts with water in blood plasma to form carbonic acid.Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and when you leave the blood. Explain what determines how
  44. Chemistry

    Could Anyone please let me know if I'm right I think that is 1 and 2?? which of the following changes will increase reaction rate? 1. An increase in the concentration of reactants 2. An increase in temperature 3. Higher-energy collisions between reacting
  45. Chemistry

    At a particular temperature a 2.0 liter flask contains 2.0 mol of H2S, 0.40 mol of H2, and 0.80 mol of S2. Calculate the equilibrium constant for the reaction: 2H2(g) + S2(g) <--> 2H2S(g)
  46. physics

    The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.0 s. initial velocity accerlation
  47. chemistry

    Show the calculation of (1) the expected grams of urea (CH4N2O) formed in the reaction of 6.5 grams of lead cyanate (Pb(CNO)2) with excess ammonium hydroxide and then show the calculation of (2) the % yield if the actual yield of urea is 1.89 grams.
  48. Chemistry

    A 4.30 g nugget of pure gold absorbed 298 J of heat. The initial temperature was 22.0°C. What was the final temperature? °C
  49. chemistry

    A 4.30 g nugget of pure gold absorbed 293 J of heat. The initial temperature was 23.0°C. What was the final temperature?
  50. Intro Chem

    A block of aluminum with a volume of absorbs 67.4 J of heat. If its initial temperature was 32.5 °C, what is its final temperature?
  51. Chemistry

    a gold bar weighing 33.5 g and having an initial temperature of 25.0 Celsius absorbs 5000 J of heat. What would the new temperature be?
  52. math

    Air expands from 2 m3 to 3 m3 at constant pressure. If the initial temperature is 60 degrees Celsius, what is the final temperature?
  53. BIOLOGY

    A SALT IS OBTAINED AS A REACTION BETWEEN A SALT (and water) IS OBTAINED AS A REACTION BETWEEN a base and an acid. See: http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/acidbase.html http://lrs.ed.uiuc.edu/students/erlinger/water/background/ph.html I
  54. Chemistry

    1. net ionic equation for the reaction of tin (II) and solid mercury chloride to yield tin (IV), liquid mercury and chloride ion 2. net ionic equation for the reaction between solid SbOOH and H2S I am not too sure about my equations, so I was wondering if
  55. Chemistry

    (a) Which of the following are requirements for anionic polymerization? --A double bond --End groups which can react by releasing a small molecule --A strong base to initiate the reaction --A strong acid to initiate the reaction --An electron-withdrawing
  56. physics

    The figure below shows the circular wave fronts emitted by two sources. Make a table with rows labeled P, Q, and R and columns labeled r1, r2, Δr, and C/D. Fill in the table for points P, Q and R, giving distances as multiples of λ and
  57. chemistry.

    in the titration between Na2CO3 and HCl... 1) at the first end point what reaction is stoiciometrically complete? 2)At the start of titration where HCl=0 is the solution acidic or basic. ExPlain? 3) At the 2nd end point what reaction is stiociometrically
  58. biochemistry

    Enzyme X is a highly pigmented protein that imparts the characteristic color to certain blue-green algae. It also facilitates a reaction necessary to the survival of this species; we can follow the kinetics of this reaction by measuring the conversion of
  59. Chemistry

    Consider the reaction: 2HCl(aq) + Ba(OH)2(aq) → BaCl2(aq) + 2H2O(l) ∆H = - 118 kJ Calculate the heat when 100.0 mL of 0.500 M HCl is mixed with 300.0 mL of 0.50 M Ba(OH)2. Assuming that the temperature of both solutions was initially 25 oC and
  60. Chemistry

    Write a procedure to demonstrate the effect of higher concentrations of HCl on its rate of reaction with antacid tablets. I have HCl with a concentration of 1.0 mol/L. This is what I have so far. Are my concentrations correct for this procedure? E is my
  61. chemistry (Organic)

    According to the two reactions below; 1-chloro-2,2-dimethylbatune + (warm NaOH 3)) 1-chloro-2-methylpropane + (cold dil.NaOH) 1) identify whether the reactions are Nucleophilic Substitutions (SN) or Elimination (E) reaction. 2) Complete the reaction
  62. Chemistry

    A 28.4288 g sample of impure magnesium car- bonate was heated to complete decomposition according to the equation MgCO3(s) ! MgO(s) + CO2(g) . After the reaction was complete, the solid residue (consisting of MgO and the original impurities) had a mass of
  63. BIOLOGY

    Table Sugar can react with water to form 2 other compounds, glucose & fructose. But, when you add sugar to a glass of water the reaction is very slow - WHY? What would it need to speed it up?
  64. chemistry

    What will be the final temperature of 650 g of water initially at 5.5°C if it is heated by burning 7.5 g of carbon to carbon dioxide. The molar heat of reaction is -393.5 kJ/mol. I do not understand how to do this question
  65. help with chemistry please

    Can someone please explain how to do this An equilibrium mixture at 225∘C contains 8.0×10−2M NH3 and 0.20M H2 for the reaction 3H2(g)+N2(g)←→2NH3(g) If the Kc at this temperature is 1.7×102, what is the equilibrium concentration
  66. Thermochemistry

    A total of 2.00 mol of a compound is allowed to react in a foam coffee cup that contains 167 g of water. The reaction caused the temperature of the water to rise from 21.0 to 24.7 degrees C. What is the enthalpy?
  67. chemistry

    At equilibrium for the reaction A + 2B --> C + D <-- the concentration of A is 0.579 mol/L, the concentration of B is 0.598 mol/L, the concentration of C is 0.465 mol/L, and the concentration of D is 0.608 mol/L. What is the equilibrium constant for
  68. biochemistry

    when a reaction A<-->B starts, there is three times as much product as reactant. When it reaches equilibrium, there is twice as much product as reactant. Show how to calculate the standard change in gibbs free energy for this reaction. I did it but
  69. science

    I need help findnig out the error involved with using a graduated cylinder and gas collection tube to calculate the rate of reaction. We beed more details than you have provided. What kind of experiment did you do? What reaction was involved? How did you
  70. chem

    empty cruble-34.69g crucible+ magnesium- 34.86g crucible+magnesium oxide - 34.97g How can i find the number of moles of magnesium present at the start of the reaction How can i also find the total number of magnesium oxide molecules present at the end of
  71. Chemistry

    1.984 g of a hydrate of K2CO3 is dissolved in 250. mLs of H2O. 10.0 mLs of this solution is tirade against 0.100 M HCl, producing the following results. Flask 1 - Initial 0, final 9.2 Flask 2 - Initial 9.2, final 18.3 Flask 3 - initial 18.3, final 27.8
  72. Chemistry Honors

    A 0.25 mol sample of n204 dissociates and comes to equilibrium in a 1.5 L flask at 100 degrees C. The reaction is N2O4 > 2 NO2. The Kc at 100 degrees C is 0.36. What are the equilibrium concentrations of NO2 and N2O4?
  73. physics

    A piece of metal with a mass of 1.9 kg, specific heat of 200 J/kg ◦ C, and initial temperature of 100 ◦ C is dropped into an insulated jar that contains liquid with a mass of 3.9 kg, specific heat of 1000 J/kg ◦ C, and initial
  74. chemistry

    Consider the following reaction: 2 B5H9 + 12 O2 => 5 B2O3 + 9 H2O How many grams of O2 are needed to make 432.7 g of H2O?
  75. Chemistry

    Over the years, the thermite reaction (mixing of solid iron (III) oxide with aluminum metal) has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors. A. Write a balanced equation representing the reaction. B.
  76. Science Chemistry

    LIST: SODIUM CARBONATE. CALCIUM CARBONATE. ZINC SULFATE. ZINC NITRATE. (a) State a pair of chemicals from the list above that can be used to prepare zinc carbonate by precipitation reaction involving mixing 2 aqueous solutions together. (b) Write a
  77. Science Chemistry

    LIST: SODIUM CARBONATE. CALCIUM CARBONATE. ZINC SULFATE. ZINC NITRATE. (a) State a pair of chemicals from the list above that can be used to prepare zinc carbonate by precipitation reaction involving mixing 2 aqueous solutions together. (b) Write a
  78. Physics

    A ball and a thin plate are made from different materials and have the same initial temperature. The ball does not fit through a hole in the plate, because the diameter of the ball is slightly larger than the diameter of the hole. However, the ball will
  79. chem question i need help

    I need help on this question. Could someone give me tips on how to solve it? thanks An emergency breathing apparatus often placed in mines works via the following chemical reaction: 4KO2(s) + 2CO2(g) to make 2K2CO3(s) + O2(g) If the oxygen supply becomes
  80. chem

    For the reaction: N2+3H2 <-----> 2NH3 1.000 mol N2 and 1.000 mol H2 are placed in a 1.000 L container and allowed to establish equilibrium. When equilibrium is established the [N2] =0.921M. Calculate the equilibrium concentrations of hydrogen and
  81. chemistry

    For the reaction below, KP = 1.6 × 106 at 400.0 °C. HCHO2( g ) <--> CO( g ) + H2O( g ) A mixture of CO( g ) and H2O(l ) was prepared in a 2.00 L reaction vessel at 25 °C in which the pressure of CO was 0.177 atm. The mixture also contained 0.391 g
  82. Chemistry

    The equation for the reaction that occurs when lead(II) oxide is heated with coke in a blast furnace is: 2PbO+c -->2Pb+CO2 (i)State, with a reason, whether PbO is oxidised or reduced in this reaction. (ii)Calculate the minimum mass, in tonnes, of coke
  83. chemistry

    Consider the following chemical equilibrium: SO3(g) --> SO2(g) + 1/2 O2(g) and Delta H = 98.9J a. Predict weather the forward or reverse reaction will occur when the equilibrium is disturbed by: i. adding oxygen gas ii. compressing the system at
  84. Chemstry

    For the reaction A(g) + B(g) <==> C(g) + D(g) the equilibrium constant K is defined as K = Y(sub y) * Y(sub D) / (Y (sub A) * Y(sub b)) where y is the molar fraction of the gas phase of a species At 620.00 K, the equilibrium constant is 1.100.
  85. chemistry

    Benzoic acid reacts with water to form the benzoate ion by the following reaction C6H5COOH(aq) + H2O(l) ⇀↽ C6H5COO−(aq) + H3O +(aq) The equilibrium constant for this reaction is 6.4 x 10−5 . In a 0.1 M solution of benzoic acid, what
  86. chemistry

    Using the activity series, write a balanced chemical equation for the following reactions: 1. iron metal is added to a solution of copper (II) nitrate 2. zinc metal is added to a solution of magnesium sulfate 3. hydrobromic acid is added to tin metal 4.
  87. Chemistry-nudge the

    A 4.30 g nugget of pure gold absorbed 298 J of heat. The initial temperature was 22.0°C. What was the final temperature? °C
  88. Physics

    A car is traveling at 7.0 m/s when the driver applies the brakes. The car moves 1.5 m before it comes to a complete stop. If the car had been moving at 14 m/s, how far would it have continued to move after the brakes were applied? Assume the braking force
  89. Chemistry

    Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a
  90. ap chem

    At a certain temperature, the equilibrium constant Kc is 0.154 for the reaction 2 SO2(g) + O2(g) *) 2 SO3(g) What concentration of SO3 would be in equilibrium with 0.250moles of SO2 and 0.578 moles of O2 in a 1.00 liter container at this temperature? Note:
  91. ap chemistry

    At a certain temperature, the equilibrium constant Kc is 0.154 for the reaction 2 SO2(g) + O2(g) *) 2 SO3(g) What concentration of SO3 would be in equilibrium with 0.250moles of SO2 and 0.853 moles of O2 in a 1.00 liter container at this temperature? Note:
  92. Chemistry 12

    4. a. Using Le Chatelier's principle, what effect will an increase of temperature have on the following system? H2O(l) + 57 kJ ↔ H+(aq) + OH-(aq) b. What is the expression for the constant for this reaction? c. What effect will an increase in
  93. physics

    I need help understanding these, please. Thanks! 1. A 2 kg body moves with constant velocity when a force of 10 N is applied. What is the coefficient of kinetic friction between the table and the body? (Would I use F=m*g for this??) 2. Which of the
  94. Chemistry

    A solution containing Pb2+ and a solution containing IO3- are poured together and quickly mixed. After mixing, the solution contains 0.0030 M Pb2+ and 0.040 M IO3-. Immediately Pb(IO3)2(s), which has Ksp=2.510-13, begins to precipitate. Calculate the free
  95. half-life

    1. The half-life of a first-order reaction is 9.89 minutes. How many minutes will have elapsed after 27 half-lives? My answer is 267.03. 2. The half-life of a second-order reaction is 2.508 days. How many days will have elapsed after 8 half-lives? My
  96. Chemistry

    For the following reaction: 6ClO2 (g) + 3H2O (l) = 5HClO3 (l) + HCl (g) If a chemist wants to make 55.0 g of HCl, how much ClO2 is needed?
  97. chemistry 11

    what conclusion can you make from the ratio of moles of copper to moles of iron in this reaction fe+cucl2---> fecl2+ cu
  98. Chemistry

    The equilibrium constant is 16 for the gas phase reaction SO2 + NO2 <--> SO3 + NO at a certain temperature. If 3.0 moles each of SO2 and NO2 are placed together in an empty 1.0 liter flask and the system is allowed to come to equilibrium at this
  99. Mechanics NYA

    Assume you are driving a car at a constant speed of 75.0 km/h. Suddenly you see a deer standing on the highway and you must put on the brakes. Your reaction time (time elapsed between the moment you see the deer and your foot hitting the brakes) is 0.116
  100. Physics

    Jenny measured the temperature of the water in a beaker, set the beaker aside, and then measured the temperature again after an hour. If the initial temperature of the water was 30°C and the final temperature was 20°C, which of the following could be the