The compound contains 58.37 mass percent bromine. S Finding molar mass starts with units of grams per mole (g/mol). The SI base unit for amount of substance is the mole. Thank you for taking initiative to check out Brainly and for posting your first question! The answer is rounded to three sig figs, the number of sig figs you have for the number of . All this works out two A mass of zero seven 4 to 0 .742g of magnesium sulfate. It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. (For water, Kf = 1.86 C/m.) Select one: c. amphoteric a. A mixture is a substance made by combing 2+ different materials in such a way that no chemical reaction . 21.9 kJ/mol You can specify conditions of storing and accessing cookies in your browser. The correct answer is: 0.75 mol of a volatile compound in 750 g of ethanol, Which is a Lewis base? 2.74 106 s-1 a. a. O Select all that apply OH, Question 5 The following molecule can be found in two forms: IR,2S,SR- stereoisomer and 1S,2R,SR-stereoisomer (OH functional group is on carbon 1) Draw both structures in planar (2D) and all chair conformations. If 12.23 g of bromomethane are produced when 5.00 g of methanol is reacted with excess HBr, what is the percentage yield? a. (R)-4-methyl-2-hexyne (R)-3-methyl-4-hexyne d.(S)-4-methyl-2-hexyne, Identify the reaction which forms the product(s) by following non-Markovnikov ? Select one: Calculate the molecular or formula mass of rubidium carbonate, Rb2CO3. c. Group 3A Relative atomic mass The mass of an atom relative to that of carbon-12. 220 mmHg c. 2Na(s) + Cu2+(aq) Cu(s) + 2Na+(aq) You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Each circle of X represents 1 mol of X. d. known to form unstable complex ions with Fe3+, Hg2+, and Zn2+. c. 4.4 10-4 7 moles Arsenic to grams = 524.4512 grams a. C12H28 CH; ~C== Hjc (S)-3-methyl-4-hexyne b. Chem Test 3 (Chapter 5 & 6) Flashcards | Quizlet Atoms are the fundamental building blocks of all matter and are composed of protons, neutrons, and electrons. d. Mixing powdered charcoal and oxygen at room temperature b. Starch 4.34 105 s-1 a. e. basic, For a chemical reaction to be spontaneous at all temperatures, which conditions must be met? Select one: Nickel - Atomic Number - Atomic Mass - Density of Nickel b. Answered: The identity of an unknown monoprotic | bartleby a. the liquid level in a capillary tube will rise above the surrounding liquid and the surface in the capillary tube will have a convex meniscus. a. K Which of the following is an example of an observation? You'll get a detailed solution from a subject matter expert that helps you learn core concepts. b. Write A/Z and symbol-mass format for an atom. d. Rubber & polyester PDF Chapter 3: Mass Relationships in Chemical Reactions - Prexams In Figure $16-22,$ point out the mutant protein $(\mathrm{s})$ in patients with Cockayne syndrome. Which one of these elements is not found in proteins? There are 74.92 grams of arsenic in 1 mole of arsenic, so we can make another ratio. One important feature of the chemistry of carbon is c. 9.73 kg a. 12.9 kg b. c. 46.7489 g So we calculated the massive magnesium sulfate that could be formed in each case. e. 9.99 kJ/mol. Barium is a nonmetal. 1 moles Arsenic to grams = 74.9216 grams. One atomic mass unit is equal to 1.66 x 10 -24 grams. a. a. e. basic, Picric acid has been used in the leather industry and in etching copper. What is its formula? Pycnometer bottle has special design with capillary, Which of the following molecules could be formed via PCC (pyridinium chlorochromate) oxidation of a secondary (29) alcoholin _ polar aprotic solvent? c. HIO3 d. 12.45 Select one: Convert moles Arsenic to grams - Conversion of Measurement Units So let's compare this massive magnesium sulfate with the mass that formed when we started off with magnesium hydroxide. Answer and Explanation: 1 Become a Study.com member to unlock this answer! 2 moles Arsenic to grams = 149.8432 grams. b. NaCl b. H2SO3 c. 76.2 g e. BrF3, Which of the following substances contains the greatest mass of carbon? e. 0.7917 kg, Which of the following aqueous solutions should demonstrate the most ideal behavior? The stock pays an annual dividend of $0.10 per share. (p = proton, n = neutron, e = electron) The thi P3/4/5 Problem 3 Plot the variation of total stress, pore water pressure, and effective stress with depth for the sand and clay layers shown in a figure below. The mass of 1.21 . Carbon, C, Z = 6 e. C0.43H, How many grams are contained in a 0.893 mol sample of methane, CH4? See Answer O The atomic mass is used to covert between grams and moles. 6 moles Arsenic to grams = 449.5296 grams. Arsenic is a metal. m (As) = 238 mol As 74.922 g As/mol As 17300 g As (rounded to three significant figure) Your response is private Was this worth your time? e. Bromine, Br, Z = 35, The correct answer is: Germanium, Ge, Z = 32, The alkali metal elements are found in _______ of the periodic table. Which of the following is a molecular formula for a compound with an empirical formula of CH? d. Esterification e. 0.29 M, What is the pH of a 0.014 M Ca(OH)2 solution? The atomic mass of arsenic is 74.92 g/mol. How many pounds is an average Mastiff puppy? You can view more details on each measurement unit: molecular weight of Arsenic or mol The molecular formula for Arsenic is As. b. What is the vapor pressure above a solution prepared by dissolving 0.500 mol of a nonvolatile solute in 275 g of hexane (86.18 g/mol) at 49.6C? 27.2 mol e.125B. Sxy +y27. Select one: 1. a. c. 6.17 1014 s-1 a. BrF This number, 12.01, is the mass in grams of one mole of carbon. tan Opposite Adjacent vsin(0 Vcos( Let ^ = and T : R' _ R'be thc lincar transformation dcfincd by :)-[:] 2 and find thcir algcbraic multiplicitics Show that the only cigcnvalucs of A arc (b) The cigenspace associated to cigcnwaluc A = 0 is e= "{L: I} Find basis for the cigcuspace Ez associated t0 cigcnvaluc A = 2 [Nutb Id give a reason for your bo cac" the defir Biochem/pH review 1. It has an acid dissociation constant of 0.42. c. 3 b. Select one: The unit of measure for mass is the atomic mass unit (amu). Chemistry Measurement Unit Conversions 1 Answer Teun Dec 15, 2016 So 4.03594014 1023grams Explanation: Here are some prefined values. The times is like overweight. a. acidic b. NaNO2 Select one: Show that a. P.(-x) =(-1)*P(x) b. b. Select one: b. BrF2 From the formula (H2O), you know there are two hydrogen atoms and one oxygen atom. a. Sintering a. John Dalton Select one: c. Hg(l), NaCl(s) -False. a. c. Germanium, Ge, Z = 32 When a sample of benzoic acid is dissolved in ether, the vapor pressure of the solution is 342 torr. Select one: Show the steps of derivation, beginning with the general solution Xy' + y = 0, y(4) = 6 dr/dt = - 211. b. H+ Which one of the following is a strong acid? a. Select one: How do you find the mass in grams of Arsenic? If 0.5 moles of hydrofloric acid ar 74.92 grams The average mass of one atom of arsenic is 74.92 amu, and the mass of one mole of arsenic atoms is 74.92 grams. How much energy, in joules, did the household use? b. the radius of the cubic cell Select one: Radical polymerization b. There are three on the product side. e. 167 mL, What volume of water (d = 1.00 g/mL) should be added to 600. mL of ethanol in order to have a solution that boils at 95.0C? So,. So first of all we need to convert the mass of magnesium hydroxide to the number of moles of magnesium hydroxide. 2.5 grams Li 1 mole = 0.36 mol 6.9 g 4. d. amorphous solids Select one: Q: Determine the mass in grams of 3.00 x 1021 atoms of arsenic. a. Zn2+ and Cu2+ Select one: Solved What is the mass, in grams, of one arsenic atom? (NA - Chegg e. NH4+. The answer is 74.9216. Select one: a. crystalline solids d. Mn2+ and Ar e. K2Mn2O7. Could 2.5 grams of sodium bicarbonate neutralized? (You can select multiple answers if you think so) Your answer: Volumetric flask is used for preparing solutions and it has moderate estimate of the volume. Select one: e. its ability to catenate. How do you find the mass of an atom? Select one: By definition, one atom of carbon-12 is assigned a mass of exactly 12 atomic mass units ( amu). The correct answer is: one carboxylic acid group and one amino group. To find a mass. The mass of any isotope of any element is expressed in relation to the carbon-12 standard. The atomic weight can change because it depends on our understanding of how much of each isotope of an element exists. 126C The Mole and Avogadro's Constant - Chemistry LibreTexts d. phase diagram. (0) - (-1) 2(!) According to the strict geometric co efficiency. b. I am here to welcome you to the site! b. Polyvinyl chloride The correct answer is: Try different coefficients and subscripts to balance the number of atoms. How do I determine the mass of one atom of an element? 4s b. Ketone d. 2n2. Thus, one mole of sodium weighs 23.0 g or one tenth of a mole of sodium weighs 2.3 g. 4. Right. C)Ionization Energy . a. BCl3 The objective of this problem is to get from a number of atoms, to a mass in grams. So, you know how many atoms are in a mole. e. proton: 11p, When atoms of beryllium-9 are bombarded with alpha particles, neutrons are produced. Which oxide is an amphoteric oxide? e. Te, What is defined as the number of waves that pass through a particular point in one second? b. Evaluate j
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