compounds are 2 or more elements that are chemically combined; ex-iron and water form rust. L. Er screen times strangled over Approximately 78 grants the L. A. P. H. D. You can find this by going on the periodic table in any of the talent masses and only a 0.128 boats of a Girlish street. The correct answer is: a double covalent bond. b. P All this works out two A mass of zero seven 4 to 0 .742g of magnesium sulfate. (c = 3.00 108 m/s) (b) Do you expect $\mathrm{CO}$ to be paramagnetic or diamagnetic? 0.53 c. 2.00 103 kJ/mol Q: Determine the mass in grams of 3.00 x 1021 atoms of arsenic. e. Buckene, The correct answer is: Buckminsterfullerene, Which type of polymerization reaction involves the combining of monomer molecules with two different functional groups resulting in the elimination of a small molecule, usually water? b. a. b. Ethylenediaminetetraacetic acid (EDTA) is e. All are of equal strength. d. Rubber & polyester Relative atomic mass The mass of an atom relative to that of carbon-12. e reacted, what mass of calcium fluoride will be produced? The given problem will solve by using Avogadro number. 54 torr e. 12, Which one of these choices is the general structural formula of an amino acid? b. Polymer c. Hydrogenation d. 4 d-Calculate the mass in grams of one calcium atom. You need to add up the masses of all of the atoms in that one molecule and use them instead. b. In this question, we need to calculate the mass of magnesium sulfate that will form when we start off with one g of magnesium hydroxide and 0.605g of sulphuric asset. Select one: I~s-latarCon d-clvboj tta ( s.64 Splcce sf (edius der s'tj p aAd J^j ferm cheje 20e sphere tLee ou f side +4t? c. Begin with elements that appear only once on each side of the equation. e. 15.85, What is [OH-] for a solution at 25C that has [H3O+] = 2.35 10-3 M? Multiply by the number of moles we calculated. 4d a. So,. c. phase boundary. What is the intermolecular force that exists between a magnesium ion and hydrogen sulfide? Select one: Pethanol = 50.0 torr at 25C. e. None of these species is an ion. (You can select multiple answers if you think so) Your answer: Actual yield is calculated experimentally and gives an idea about the succeed of an experiment when compared t0 theoretical yield. e. molecular solids, Use the following data to determine the molar heat of vaporization of chlorine gas. Vitamin B1 is most soluble in _________. A) H2S B) SO2 C) SCl2 D) H2SO3 E) Na2SO4 E) Na2SO4 A 250. mL sample of 0.0328M HCl is partially neutralized by the addition of 100. mL of 0.0245M NaOH. In this case, add up all the atomic masses in the chemical formula and divide by Avogadro's number. Select one: The word 'mole' has been adopted to represent the Avogadro number of atoms of an element, that is, the relative atomic mass of an element. And then we can calculate the mess of magnesium sulfite from the number of moles of magnesium sulfate, which is equal to the number of moles of magnesium hydroxide. a. Boiling water to form steam Select one: e. 0.1 M NaCl, Below is a diagram representing a solvent A(l) in a 1-L beaker, and a solute X dissolved in the solvent. a. BrF When a spring is stretched from its equilibrium length The spring exerts force in the direction it is being stretched The spring exerts force in the direction opposite that it is being stretched The spring exerts a force normal to the direction it is being stretched The spring does not exert any force The direction of the force exerted by the spring depends on the sign of the spring constant,k A helium balloon released on the surface of the earth will rise into the air: A similar helium balloon. Select one: (2.11e21 arsenic atoms) x (1 mol/6.02e23 atoms) = . b. critical point. 7 moles Arsenic to grams = 524.4512 grams What is meant by the prefix "poly"? d. A salt bridge allows the electrolyte solution to siphon from one side of the cell to the other so the levels remain equal. So this is the limiting reacting and the final mass of magnesium sulfate 0.742 g.. Avogadro's number is the number of particles in one mole of anything. The nucleus is composed of protons and neutrons. So first of all we need to convert the mass of magnesium hydroxide to the number of moles of magnesium hydroxide. We start with 4.65 x 10 21 arsenic atoms and we want to get to mass in g. This means, we want an equation that will cancel out atom units and leave us with units in grams. We want to get HBO out of this. Select one: If this solution is ideal, its total vapor pressure at 20C is e. 0.29 M, What is the pH of a 0.014 M Ca(OH)2 solution? 4.0 10-3 b. H+ ThoughtCo. The number 6.022 10 is called Avogadro number. a. crystalline solids B. That's equal to one times. d. 4.0 10-6 e. frequency, Use the Rydberg equation to calculate the frequency of a photon absorbed when the hydrogen atom undergoes a transition from n1 = 2 to n2 = 4. An unpolarized beam of light with intensity 10 = 98.8 lux is incident on three P3/4/5 Problem 3 Plot the variation of total stress, pore water pressure, and effective stress with 13.069 ' 39 %my.aui maRleturns on StockEducated-NonEducated Managers~0,0us41 0 12916 -0, 05740 -0 077470.02316 0,02450 0 [5345 -0,0ni67-0,04293 '0 00250 0,07673 0,018450,051C0 0 01932 0,01641 0,070770,06640 -001CG9 02606 0oraia-0,03850 0 I1605 004997 0nu4700,10598 0,04?20 0 14360 J12589~0,00591 0,05901 0.07432 -0n3o50,COCOO 0 00285 0 013AO 0,005644 WmesenOlbaaeOOnuildbllniAunyi4TdeieiWongDooaDmEP0,0471- 0,07123 0,0458 0 0o10g 0 Djoj 0nu4n0"04643Mo. d. amino acid. The pH of a solution of Mg(OHJz is measured as 10.0 and the Ksp of Mg(OH)z is 5.6x 10-12 moles?/L3, Calculate the concentration of Mg2+ millimoles/L. d. 6.00 lb a. d. 12.45 What is the mass of one atom of magnesium in grams? The same process works for finding the mass of one molecule. d. wavelength b. 0.0197 Mass numbers of typical isotopes of Arsenic are 75. Select one: 0.0169 a. a single covalent bond. e. 16 p, 16 n, 15 e, Which of the following is a metalloid? We assume you are converting between grams Arsenic and mole. b. Paraffin wax begins to melt at 57C. Silicon is a nonmetal. Question: What is the mass, in grams, of one arsenic atom? Tritium decays by beta decay and has a half-life of 12.3 yr. One mole of titanium (6 1023 atoms) has a mass of 48 grams, and its density is 4.54 grams per cubic centimeter, so the center-to-center distance between atoms is 2.60 10-10 m. You have a long thin bar of titanium, 3.0 m long, with a square cross section, 0.15 cm on a side. Select one: a. C2H6 What is the mass of 6.02 x 10^23 atoms of arsenic? Which of the following lacks a regular three-dimensional arrangement of atoms? Select one: b. BrF2 c. 3 The nineteenth century chemists arranged elements in the periodic table according to increasing Select one: a. atomic number. a. . e. NH4+. what is the mass in grams of one arsenic atom. d. 0.1 M MgSO4 c. S . 3 c. 366 mmHg Select one: c. 83Li a. Hydration e. Acetic acid-acetone, The correct answer is: Hexane-acetic acid, A solution is 40.00% by volume benzene (C6H6) in carbon tetrachloride at 20C. b. When a spring is stretched from its equilibrium length The spring exerts force in the direction it is being stretched The spring exerts force in the direction opposite that it is being stretched The spring exerts a force normal to the direction it is being stretched The spring does not exert any for All employees are expected to act according to their organization's Code of Ethics or Conduct, based upon the values of the organization. Now first of all we need to check if the reaction equation is balanced or not and we can see that it's not balanced. Find the speed of an object (a) on the equator and (b) in Las Vegas (latitude: 36.2 north). solve the IVP Q2) Solve the IVP. Example: e. 82.6%. d. 14C Select one: So first, we're gonna write, um, Thea appropriate reaction here so that we can know the extricate Emma tree between them. a. dipole-dipole forces Select one: The atomic mass is the mass of an atom. b. e. None of the will occur. c. 212 mL c. Theory 1.85 a. This number, 12.01, is the mass in grams of one mole of carbon. 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: c. C a. CH3COOH b. And when we saw all the style we get that 0.45 g HBO is produced. b. neutron: 10n d. 14.3 g In a spontaneous exothermic process, 13. Converting the mass, in grams, of a substance to moles requires a conversion factor of (one mole of substance/molar mass of substance). 4s The vapor pressure of pure benzene at this temperature is 74.61 mmHg and its density is 0.87865 g/cm3; the vapor pressure of pure carbon tetrachloride is 91.32 mmHg and its density is 1.5940 g/cm3. d. F Now that you know how many mol of chlorine 3x10 24 atoms is equal to, you can use the molar mass to convert from mol to grams. d. Many Select one: e. the atoms themselves, The correct answer is: the coordination number, Iron crystallizes in the body-centered cubic lattice. a. acidic Right. a. Reasons why recycling scrap copper is more sustainable than extracting copper from copper ores, Compose the cathode and anode processes of melt electrolysis of MgS, the total electrolysis equation, Compose the cathode and anode processes of electrolysis of an aqueous solution Li2SO4, the total electrolysis equation, Calcium hydroxide reacts with hydrofloric acid according to the following reaction. For example, one atom of helium-4 has a mass of 4.0026 amu. Isotopes are nuclides that have the same atomic number and are therefore the same element, but differ in the number of neutrons. Select one: Select one: Atomic mass of Arsenic is 74.9216 u. d. 59.1% Select one: b. Id give a reason for your bo cac" the defir Biochem/pH review 1. c. polypropylene. 1 grams Arsenic is equal to 0.013347285695981 mole. 0.5101 kg ;^ +le As Fsjy< / c^A-ctive hollaw spbcre ~4h c^ 4^ 15 ~karjed 4dius b Ad 34tl~r Gad: Ce ce ctrie {^aec whole Jstcm C> 0 eleet(-stati eqliyi= WLe^ 4k{ 1-) Usia= 64us$` $ J (r < 4 ) (4 < 721) (bzr< s) 44 (o>c) eleetc fic |d, tne rej"s On ; fer fvA +h6 4e 4 O^ +le Fia tke in Ju#o charje > Pe| Jn' ii-) ~ +4a hollaw sphere 'caer 4 o4ter On Ju. d. R-CH-NH2 d. Esterification An amino acid is a compound that contains at least a. one amino group and one amide group. COOH. d. 78.5 g c. 8.64 1024 g In acid base titration experiment our scope is finding unknown concentration of an acid or base_ In the coffee cup experiment; enctgy ' change is identified when the indicator changes its colour. Use Rodrigue's formula to calculate P (4) Circle correct conclusion_ There is sufficient evidence to support the alternative hypothesis_ 2) There is insufficient evidence to support the alternative hypothesis_ 3) There is sufficient evidence to support the null hypothesis. Barium is a nonmetal. B. a. polybutylene. a. B3+ You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Which of the following is least helpful in balancing an equation? b. Cl e. Bi, The chlor-alkali process produces chlorine, Cl2(g), in large quantities. Calculate the mass of 3.00 moles of CF2Cl2. a. I will list five. d. 4f e. Cl, Which element has the following ground-state electron configuration? A year ago, you purchased 300 shares of Stellar Wood Products, Inc. stock at a price of $8.62 per share. e. 400. torr, Safrole was once used as a flavoring in root beer, until it was banned in 1960. -False. c. 6.17 1014 s-1 e. Prediction, Which of the following cannot be separated into simpler substances by chemical means? c. Hg(l), NaCl(s) c. 3. So, you know how many atoms are in a mole. 4.37 1014 s-1 So what mess of HCL, right? d. Hexane-diethyl ether d. Henry Moseley See Answer a. 0.1 M K2SO4 Select one: b. Note: Use "Total Sales" and "Total Assets" as the denominators for income statement and balance sheet, respectively. *Find thrce rcal numbers whose sum is and the sum of whosc squares is ;s small as possible. a. Gases expand as their temperature increases because the gas molecules are moving more rapidly. e. Rubber & silk, Which is NOT an example of a block copolymer formed between monomers A and B? d. 32 p, 31 n, 32 e e. 24, chem exam 3 - ch 7 Copied from somone els, Comparison Char of the most commonly used man, Bruce Edward Bursten, Catherine J. Murphy, H. Eugene Lemay, Matthew E. Stoltzfus, Patrick Woodward, Theodore E. Brown, Donald J. DeCoste, Steven S. Zumdahl, Susan A. Zumdahl, Chemistry: The Molecular Nature of Matter and Change. 29.2573 g According to the strict geometric co efficiency. 1.55 What is the coefficient of H2O when the following equation is properly balanced with the smallest set of whole numbers?___ Al4C3 + ___ H2O ___ Al(OH)3 + ___ CH4 a. All right, So we need to substitute here. a. Arsenic, Smaller mass is 74.9 grams per mole. b. 10.0 lb b. R-CH2-NH2 a. S e. energy content of neither system nor surroundings changes. There are three on the product side. c. 6.80 mol 0.67 Discuss its associated religious connections. You can specify conditions of storing and accessing cookies in your browser. (d) CO can react with OH$^{-}$ to form the formate ion, HCO$_{2}^{-}$ . Select one: A mixture is a substance made by combing 2+ different materials in such a way that no chemical reaction . c. Firing So four there will be six most of the ratio produced and actually covered the most of HBO into grams as well. e. Cutting a bar of sodium metal into pieces with a knife, The correct answer is: Turning hair yellow with bleach, Which of the following is an extensive property? What is your total dollar return on this investment? c. its amphoteric behavior. e. HClO3, Which one of these salts will form a basic solution upon dissolving in water? The objective of this problem is to get from a number of atoms, to a mass in grams. e. 55.85 10-23 g, Ammonia reacts with fluorine to produce dinitrogen tetrafluoride and hydrogen fluoride (used in the production of aluminum, in uranium processing, and in the frosting of light bulbs). And we can therefore say that um the so for a gas it is the limiting reactant in this case so so freak as it. b-How many atoms are there is 20.0 grams of calcium? Capillary tube is used in "coffee cUp calorimeter" experiment Indicator is used in "stoichiometry" experiment Mass balance is used in all CHEICOI laboratory experiments. a. The atomic mass of potassium is approximately (a) 19 amu (b) 39 amu (c) 59 amu. b. b. Buckminsterfullerene Arsenic is a metalloid, meaning it shares some characteristics with metals, and some with non-metals. b. Sulfur, S, Z = 16 e. None of the answers is correct. b. Hexane-benzene O e. Srxn = 0, Hrxn = 0, The correct answer is: Srxn > 0, Hrxn < 0. d. 712 J/mol d. NO2- (0) - (-1) 2(!) An atom of helium has a mass about four times greater than that of an atom of hydrogen. N = A household receives a $145 electricity bill. Ozone (O3) in the atmosphere can react with nitric oxide (NO) as follows.O3(g) + NO(g) NO2(g) + O2(g). 1/2gt? (1lb = 453.6 g) d. 29.3100 g d. 100 g CH2Cl2 Sorry the number of moles of magnesium sulfate from the number of moles of magnesium hydroxide. a. b. Let f be an integrable function on [a,b]: Then, forae.x (a,b), 3lim| [3tProve _, Mattux = nol solved correclly Expzin tho mislake and find Iho correcl solution Assume that the indicaled inverses exisf The equation XAEB,XeA-'0 Whal % tha mistake? b. It's easy to find the mass of a single atom using Avogadro's number. Select one: b. H-F Example #2: A 1.443 g sample of an unknown metal is reacted with excess oxygen to yield 1.683 grams of an oxide known to have the formula M 2 O 3 . Select one: a. Calculate its formula mass. 84.64 mmHg Hrxn = -199 kJ/mol, Srxn = -4.1 J/K molWhat is Grxn for this reaction at 25C? How much wor Earth has a radius of 6.38 106 m and rotates with a period of 23.9 hours. Solve the IVP Q2) Solve the IVP. Select one: So this is going to be one g divided by the molar mass of magnesium hydroxide which is 85 point 3 2 g per more. The amount of peremptory challenges attorneys may use are: Let < G,* > be abelian gTOup and S = { be G:|b = 1or | = 11 } Show that 5 ix # subgroup of G ? (c) What is the bond order of $\mathrm{CO}$ ? Simply divide the relative atomic mass of the element by Avogadro's number to get the answer in grams. c. 6 Select one: a. c. 4.26 10-12 M This means that its atomic weight is 58.85 g/mol, the atomic weight of cobalt. Sxy +y27. An unpolarized beam of light with intensity 10 = 98.8 lux is incident on three ideal polarizing filters (lux = 2.). So we calculated the massive magnesium sulfate that could be formed in each case. c. Srxn< 0, Hrxn < 0 O Select one: a. a. Al d. carbon tetrachloride Round The original measurement of atoms (4.83 10 ) has 3 significant figures, so our answer must have the same. My name is agenthammerx, a Master Answerer and Engagement Team Member here on Brainly. -True. If the mass of a substance is known, the number of moles in the substance can be calculated. e. Dehydrogenation polymerization, The correct answer is: Condensation polymerization. Select one: found in proteins is called a (an) c. 518 mL Chemistry Measurement Unit Conversions 1 Answer Teun Dec 15, 2016 So 4.03594014 1023grams Explanation: Here are some prefined values. c. 0.145 b. Sb d. -1.42 103 kJ/mol b. b. A salt bridge provides electrical contact between the electrodes that make up the cell. Select one: So let's substitute the values to calculate the number of models freak acid, 0.605g, divided by the molar mass of suffering acid, which is 98 08 Crimes Per Moon. 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. d. I2 and Cl- Element Arsenic (As), Group 15, Atomic Number 33, p-block, Mass 74.922. b. two amino groups and one carboxylic acid group. Although this number is a constant, it contains too many significant figures to work with, so we use a rounded value of 6.022 x 1023.
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