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PERIODIC LAW PUZZLE In this exercise, you will use your knowledge of periodic properties and a list of clues to arrange the main group (representative) elements into a periodic table. Use the clues be
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(a)(i) 20.57 moles of hydrogen and 5.22 moles of iodide were allowed to react to equilibrium at 4500C. At this point the mixture contained 10.22 moles of hydrogen Iodide. Show from the given data, tha
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answer the question
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hi i have attached a pdf of questions. please answer it, i just need answers not explanation.
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Hi, there are 10 questions. This is a volume measurements uncertainty lab quiz .I need their answer as soon as possible. Thankyou very much.
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A soap bubble of 8 cm diameter containing air at 27 degree centigrade and 760 mm hg pressure is expanded until it's radius is 8 cm, the temperature and pressure remaining constant. How many ml of air
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1. Escriba el símbolo del isótopo de la forma X-A para cada isótopo a. El isótopo de plata con 60 neutrones b. El isótopo de plata con 62 neutrones c. El isótopo de uranio con 146 neut
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Given that 1 vt is equal to 0.0000575 miles, how many m2 are there in 26.1 vt2?(NOTE: An vt and an vt2 are fictitious units of length and area, respectively. The other units that are mentioned in this
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Given that 1 vt is equal to 0.0000575 miles, how many m2 are there in 26.1 vt2? (NOTE: An vt and an vt2 are fictitious units of length and area, respectively. The other units that are mentioned in thi
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What is the molarity of an unknown NaOH solution if 50 mL of the solution is titrated to a phenolphthalein endpoint with 62.5 mL of 0.102 M HCl? This question requires the sudent to write a balanced e
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1. A chemist measured the pressure of a gas in atmospheres at different temperatures in °C: Temp (°C) -136 -25 0 25 100 273 Pressure (atm) 0.50 0.91 1.00 1.09 1
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An electron is accelerated in a cathode ray tube and moves at a velocity of 3.0*10^6 km/hour. Calculate the kinetic energy of the electron. You can find the mass of an electron on the Table of Constan
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In this assignment, you will complete the worksheet below and upload your answers for a grade. You can answer directly on the worksheet or on a separate paper with items properly numbered.
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I need help from question 2 d) to question 10 f)
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What mass of oxygen is required to oxidise 10.0g of ammonia to NO? 4NH3 + 5O2 ️ 4NO +6H2O
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Complete the following questions and Must show work on everything
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Hey can anyone help me with this?
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Calculate the potential (emf) of a working galvanic cell that is based on these two half cells and standard potentials (both written as reduction reactions) in an aqueous basic solution. Cr3+(aq) →
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can you please help me
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Need help with 2a and 2b please!
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Anyone who can help rn. Org Chemistry assignment ?
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Calculate the volume of Koh dispensed Calculate the number of moles of Koh
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2(a) Aluminium chloride exists in the form of dimer at room temperature. (i) Draw the Lewis structure of aluminium chloride when it is heated to 1000 °C. (2 marks) (ii) Mr Andrew plans to replace the
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naturally occurring argon consists of three isotopes, 36Ar, 38Ar, 40Ar, in the ratio of 4.86: 1: 1423 i) calculate percentage abundance of each isotope ii) calculate the relative atomic mass of argon
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Suppose 2.23 g of barium nitrate is dissolved in 250 of a 50.0 m M aqueous solution of sodium chromate. Calculate the final molarity of barium cation in the solution. You can assume the volume of the
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examples of a branched hydrocarbon
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The pH (at 37°C, where KW = 2.4 × 10−14) of a certain metal hydroxide of formula M(OH)3 is 11.10. What is Ksp for the metal hydroxide at 37°C?
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Sodium-24 has a half-life of 14.8 hours. How much of a 819.3 mg sodium-24 sample will remain after 3.7 days?
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Approximately (3.230x10^0) g of lead(II) acetate, Pb(CH3COO)2, is weighed out and placed in a (2.85x10^2) mL solution of 0.150-mol/L sodium hydroxide. Calculate the mass of precipitate produced in thi
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the questions are in the file
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name the following molecule
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draw a curve similar to that shown in figure for a series of solutions of nh3. plot [oh−] on the vertical axis and the total concentration of nh3 (both ionized and nonionized nh3 molecules) on the hor
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Help please!
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Consider the following concentration cell. M(s) | M+(satd MX) || M+(0.100 M)| M(s) Ecell = 0.417 V At the anode, a metal electrode (M) is placed in a saturated aqueous solution containing ions of
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Can someone please help me with these chemistry questions
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An electrolytic cell containing one half-cell consisting of a nickel electrode in a 1 mol/L nickel (III) chloride solution and the other half-cell consisting of a cadmium electrode in a 1 mol/L cadmiu
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Please help me.I am unsure how to do the question. Thank you in advance!
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All the question from the attached files
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this picture
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How many formula units (aka "molecules") are contained in 0.812 mole of Pb(NO3)2?
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In the human body, C-12 has an abundance of 98%, and C-13 has an abundance of 2%. What would you expect to be true about the average atomic mass?
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A flask contains 0.190 mol of liquid bromine,Br2, determine the number of bromine molecules present in the flask.
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A gas occupies 1.57 L at 1.00 atm. What will be the volume of this gas if the pressure becomes 3.00 atm?
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1. Which substance is a liquid at 25°C? 2. Which substance is a gas at 25°C? 3. Which three substances contain simple molecules?
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explain why 4-nitrobromobenzene 21 predominates in the product mixture over the 2-nitrobromobenzene 22
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C=5/9 (F−32) The equation above shows how temperature F, measured in degrees Fahrenheit, relates to a temperature C, measured in degrees Celsius. Based on the equation, which of the following must b
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Analyze the assigned neurological disorder and prepare a report in a two- to three-page document. Evaluate the causes of stroke. Discuss the differences between transient ischemic attack and cerebrova
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Consider the following reaction: H2O(g) + CO(g) H2(g) + CO2(g) The equilibrium constant Kp for this reaction is 0.55 at 1023 K. (3 marks) (2 marks) (2 marks) (i) In a reaction vessel, water vapour and
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need help pls
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