All right, So we need to substitute here. 7(0) = lo v' = -4x/y: V(2) = 3 Find all the second-order pantial derivatives of the function f(x,y) = Tx? The same process works for finding the mass of one molecule. 6.02 1023 g b. This is why chemists use Avogadro's number. a. its large radius that allows other atoms to fit easily around it. 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? One molecule of water (H 2 O) would weigh 18.02 amu (21.00797 amu for H + 15.9994 amu for O), and a mole of water molecules would weigh 18.02 grams. b. KMnO4 a. b. Well on the reaction side there are six plus six which is 12. Select one: b. H+ (70 points) OH. Select one: d. its ability to form multiple bonds with hydrogen. The correct answer is: one carboxylic acid group and one amino group. c. Polystyrene e. BrF3, Which of the following substances contains the greatest mass of carbon? b. vapor pressure is equal to or greater than the external pressure. c. Mercury, Hg, Z = 80 Vitamin B1 is most soluble in _________. How do you find the mass in grams of Arsenic? d. 2n2. I will list five. Attorneys may remove jurors via peremptory challenges. Calculate its formula mass. So to first balance this one, let's look at the S. 04 1st. When a sample of benzoic acid is dissolved in ether, the vapor pressure of the solution is 342 torr. b. upper right, lower left b. Al(s) + 3Na+(aq) Al3+(aq) + 3Na(s) 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 . e. the liquid level in a capillary tube will be flat. Sturting with 4.00 Eor 32P ,how many Orama will remain altcr 420 dayu Exprett your anawer numerlcally grami VleY Avallable HInt(e) ASP, Which of the following statements is true (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 to theoretical yield: In acid base titration experiment; our scope is finding unknown concentration of an acid or base: In the coffee cup experiment; energy change is identified when the indicator changes its colour: Pycnometer bottle has special design with capillary hole through the. b. an effective antidote for heavy metal poisoning (e.g., Pb2+ and Hg2+). A salt bridge provides electrical contact between the electrodes that make up the cell. If you look at . It is the number of particles in a single mole of a material, based on the number of atoms in exactly 12 grams of the isotope carbon-12. a. triple point. Which is the strongest acid? 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. a. And we look at the limiting reacted. e. Cu2+. a. So this is the limiting reacting and the final mass of magnesium sulfate 0.742 g.. c. 0.27 a. Hexane-heptane Select one: The correct answer is: vapor pressure is equal to or greater than the external pressure. This is approximately the sum of the number of protons and . e. NH4+. d. HDPE . b. hence, mass of 1 atom of arsenic is 1.2441023 X 10-22. What is the mass, in grams, of #3.75 xx 10^15# atoms of gold? a. d. 14.3 g 0.0197 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. e. None of the above. A salt bridge carries electrons between the cathode and anode. 1. Discuss circumcision and the arguments for and against it. Complete the table below:if " = ICu = 2 =)(- + f-")fnifn 2 3all steps1265Theorem:[Calculus, infnite power series for e ]e" =CXofinite number of terms from that infinite series, s0 uses polynomial Pn(z) of some degree - computer Or calculator can only usee" ~ Pn(z) = Ci= 1We will focus on getting good approximation of below:=e-1 ~ Pa(-l)plz)Pn(-1)rounded B(-I- 10000 +0.6321 0.0000 0.3679 0.5000 +0.1321 00S45 +20071 0.3665 3,00121+I 1+2+ 2*, (2 + 2 +*)4 1+2+ =(6+ 62+314 +1&quo. c. 2.8 x 103 g d. C6H6 It's one of the one. (c = 3.00 108 m/s) So first we do this by comparing the ratios. 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. And now we said we multiply with 120.36 g per more. Select one: We want to get HBO out of this. IfX is the associated random variable, what is E(X)? The location that indicates conditions under which two phases can exist in equilibrium is called the Select one: a. d. 12.4 kJ 2, 2021, thoughtco.com/avogadros-number-example-chemistry-problem-609541. 2 d. one carboxylic acid group and one amino group. d. Specific Heat 119.00amu 39.10amu+79.90amu= 118.95 => 119.00amu And the atomic massive option at 16 ages one so well approximately 18 g of HBO and everyone more mm. 0035 mols of arsenic, this conversion changes the individual number of atoms, into the units of mols. The segment Select one: a. Si 2.74 106 s-1 An amino acid is a compound that contains at least b. H2SO3 Select one: e. transition state. d. NO2- b. Roasting Sorry the number of moles of magnesium sulfate from the number of moles of magnesium hydroxide. The times is like overweight. Ozone (O3) in the atmosphere can react with nitric oxide (NO) as follows.O3(g) + NO(g) NO2(g) + O2(g). b. (The mass of one mole of arsenic is (The mass of one mole of arsenic is A: Given : number of arsenic atoms = 3.00 X 1021 atoms mass of 1 mole of arsenic = 74.92 g Relative atomic mass The mass of an atom relative to that of carbon-12. And now we can go ahead and do some calculations. And then we need to use the Mowlam. Ethylenediaminetetraacetic acid (EDTA) is b. Cl What is the average mass, in grams, of one arsenic atom? b. Hexane-benzene *Find thrce rcal numbers whose sum is and the sum of whosc squares is ;s small as possible. Let f be an integrable function on [a,b]: Then, forae.x (a,b), 3lim| [3t Prove _ 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? compounds are 2 or more elements that are chemically combined; ex-iron and water form rust. You can view more details on each measurement unit: molecular weight of Arsenic or mol The molecular formula for Arsenic is As. d. CH2.3 0.1 M K2SO4 e. Bromine, Br, Z = 35, The correct answer is: Germanium, Ge, Z = 32, The alkali metal elements are found in _______ of the periodic table. If 0.5 moles of hydrofloric acid ar Select one: Complete the table below: if " = ICu = 2 =)(- + f-") fn ifn 2 3 all steps 1 265 Theorem:[Calculus, infnite power series for e ] e" =CXo finite number of terms from that infinite series, s0 uses polynomial Pn(z) of some degree - computer Or calculator can only use e" ~ Pn(z) = Ci 5 What is the electric field at point P, located at position (a, a), from the dipole shown in the figure below? The solubility of a gas increases as the temperature decreases. :(} 4. Select one: Three units of D and 2 units of F are requir 2. Plastic Label all primary, secondary, and tertiary carbons. b. carboxylic acid. Select one: Rubber What is the average mass in grams of one Zn atom chegg? e. Heterogeneous mixture. (0) - (-1) 2(!) The vapor pressure of a solvent over a solution decreases as its mole fraction increases. 61 g The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. Select one: 3. 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. d. 29.3100 g So this limits the amount of product that can be formed. e. Ernest Rutherford, Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. 1.24 lb a. b. Alkanation c. 0.15 M has a total valence state of 0 (3x(+1) for the hydrogen atoms; 1x(+3) for the arsenic(III) atom; 3x(-2) for the oxygen atoms = 3+3-6 = 0). Select one: a. Select one: c. C4H10 c. Polypropylene e. 322 mL, What mass of water is required to dissolve 25.31 g of potassium nitrate (KNO3) in order to prepare a 0.1982 m solution? You can see that this one this number is obviously don't be smaller. All this works out two A mass of zero seven 4 to 0 .742g of magnesium sulfate. Which one of these represents a chemical change? 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. The atomic mass of arsenic is 74.92 g/mol. Which of the following ligands has two different types of donor atoms? b. one mole = 6.0210 atoms So number of moles of arsenic are 1 mol. 2 moles Arsenic to grams = 149.8432 grams. a. NaCl Radical polymerization e. K2Mn2O7. a. NH3 Select one: 1020 kJ/mol The unit of measure for mass is the atomic mass unit (amu). The answer is rounded to three sig figs, the number of sig figs you have for the number of . What other industrially important substances are produced in this process? e. 6s, What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm? c. polypropylene. E = In this case, add up all the atomic masses in the chemical formula and divide by Avogadro's number. a. e. 2.27 mol, Methanol (CH3OH) is converted to bromomethane (CH3Br) as follows:CH3OH + HBr CH3Br + H2O d. neutral d. Mn2+ e. Alcohol, Which one of these materials is a copolymer? mass of 1 atom / 1 atom = mass of a mole of atoms / 6.022 x 10 23 atoms Plug in the atomic mass of carbon to solve for the mass of 1 atom: mass of 1 atom = mass of a mole of atoms / 6.022 x 10 23 mass of 1 C atom = 12.01 g / 6.022 x 10 23 C atoms mass of 1 C atom = 1.994 x 10 -23 g Answer The mass of a single carbon atom is 1.994 x 10 -23 g. (For ethanol, Kb = 1.22 C/m; density = 0.789 g/cm3; boiling point = 78.4C) Calculate the mass of 3.00 moles of CF2Cl2. The question is, how do we get to mask HCM? b. Gold's (Au) molar mass from the Periodic table is "196.966" g/mol. Attorneys may remove jurors via peremptory challenges. Select one: (Typo an Dc nnskor )0 A[0 8,Jo)=Tno nrc Ionoth & tho Ourvo Is opproxemntely (Round Uuteu docmal acos nonded )Click %0 solect your unowor(s). e. transition element, main group, The correct answer is: upper right, lower left, Which of the following is a metalloid? You'll get a detailed solution from a subject matter expert that helps you learn core concepts. O d. phase diagram. We still need to put it to in front of the water so that it's balanced on both sides, right? The atomic number of nitrogen is (a) 14 (b) 7 (c) 12. HCL. a. vapor pressure is exactly 1 atmosphere. Select one: ThoughtCo. You want to first convert the number of atoms to mols of atoms. 53 Li (2.11e21 arsenic atoms) x (1 mol/6.02e23 atoms) = . Chemistry The Mole Concept The Mole. b. Cu2+ -$382 B. What is the mass of 6.02 x 10^23 atoms of arsenic? O (For ethanol, Kb = 1.22C/m; boiling point of pure ethanol = 78.37C) 13. d. 105B Select one: + whereand are constants: Calculate the values of these constants. Select one: 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. d. 0.20 M a. Select one: e. nuclear binding energy. d. 6.00 lb How many grams of chlorine is that? Thank you for taking initiative to check out Brainly and for posting your first question! We're told about sodium bicarbonate. 1 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. a. Al And when we saw all the style we get that 0.45 g HBO is produced. b. Emulsion e. 35 yr, Which is an incorrect representation of the indicated particle or nucleus? c. air MOLE PARTICLE (ATOM) MASS (g) 1 mole = molar mass (look it up on the PT!) d. Ge Select one: Select one: Discuss circumcision and the arguments for and against it. An atom of helium has a mass about four times greater than that of an atom of hydrogen. c. C e. one methyl group and one amide group. c. 3. e. Pressure, An average Mastiff puppy weighs 2.72 kilograms. Px. Prove that j P.com jP6?P. b. d. the liquid level in a capillary tube will drop below the surrounding liquid and the surface in the capillary tube will have a concave meniscus. c. 8.64 1024 g (NA = 6.022 1023 mol-1) Hope this helps! a. Select one: 12.9% Brz HzO, Question Which of the following statements is true ? The atomic mass of potassium is approximately (a) 19 amu (b) 39 amu (c) 59 amu. Thanks. e. 18.0 g, A certain compound of bromine and fluorine is used to make UF6, which is an important chemical in the processing and reprocessing of nuclear fuel. b. Sb a. polybutylene. c. 59.8 lb 1) An atom of arsenic has a mass of 74.92 grams. Select one: Uh the mole ratio um in order to determine the number of moles of magnesium hydroxide from the number of moles off. 27.2 mol c. -A-A-A-B-B-B-A-A-A-B-B-B- In Figure $16-22,$ point out the mutant protein $(\mathrm{s})$ in patients with Cockayne syndrome. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. e. Ionic solutes dissociate in solution, causing an enhancement of all colligative properties. e. a total of 8 4 = 32 electron dots. 0.75 mol of a nonvolatile compound in 750 g of ethanol Question 2 (10 marks)Use the binomial series to find the first four non-zero terms of (1 + x*)3/2,[4 Marks](i) Find the error using the terms found in (i) at x 0.2,[3 Marks](iii) The expressioncan be expressed in the form:a(x - b)? a. upper left, lower right Evaluate j