Home; . Select one: b. 46.8016 g c. ionic bonding So first, we're gonna write, um, Thea appropriate reaction here so that we can know the extricate Emma tree between them. 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. So according to this, balanced the chemical in question, we can't see the racial sodium bicarbonate with hydrogen With with hydrochloric acid is well, is one to work. Which is the strongest acid? e. 400. torr, Safrole was once used as a flavoring in root beer, until it was banned in 1960. Ethylenediaminetetraacetic acid (EDTA) is What is the mass of the flask when filled with heavy water at 20.0C? The abundance of arsenic in the Earth's crust is about five grams per ton; . Select one: ;^ +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 2. Select one: You can see that this one this number is obviously don't be smaller. You use the periodic table to look up the mass of each atom (H is 1.01 and O is 16.00). (70 points) OH. d. O 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. Find the number of automobiles whose total mass is the same as 1.0 mol blueberries. Gold's (Au) molar mass from the Periodic table is "196.966" g/mol. Periodic Table. 0.20 a. For 12 C, the atomic mass is exactly 12u, since the atomic mass unit is defined from . So H two S. 04 would be are limited and reaction. d. Ether HCI was used as the tltrant: Other Information is given as follows Mass of baking powder 0.9767 g Molarity of titrant 0.05 M Volume of consumed titrant 8.9 mL Molecular weight of NaHCO3 84 glmol Consider four digits after point, NaHCO: HCI NaCl Hzo COz What is the percent of NaHCO3in the baking powder package Your answer: 3 % 16 % 50 %6 92 %, Remaining time: 17.37 Question 3 Which of the following statements is nor true? *Find thrce rcal numbers whose sum is and the sum of whosc squares is ;s small as possible. The segment Calculate the molecular or formula mass of rubidium carbonate, Rb2CO3. Converting the mass, in grams, of a substance to moles requires a conversion factor of (one mole of substance/molar mass of substance). 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. d. C6H6 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. One unified atomic mass unit is approximately the mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol. That's what we're given 2.5 grams. -True. Given Cu2+(aq) + 2e- Cu(s) E = +0.34 V Al3+(aq) + 3e- Al(s) E = -1.66 V Na+(aq) + e- Na(s) E = -2.71 VWhich of the following reactions will occur? Temperature Select one: + where and are constants: Calculate the values of will give less Idd-numbered homework and practice to and fewer easy problems sents what you will understand - find the material before responsibility to on the exam: This is to prepare determine how you doing the optional you study and what material ework practice and odd-numbered problems you nn Sign Save Homework: Chapter 14 Material Requirements Planning erations Score: 0 of 1 pt 15 of 20 (10 complete) HW Score: 42.75%, 8.55 of 20 pts Problem 14.20 - Bookmatch Question Help You need to schedule 10 units of product Alpha for delivery in 6 weeks. The molar mass of an element is found on the periodic table, and it is the element's atomic weight in grams/mole (g/mol). Select one: d. Hexane-diethyl ether A. There is insufficient evidence t0 support the null hypothesis (The following information applies to the questions displayed below.] c. atomic mass. c. Ester a. system heats up while surroundings lose energy. Chemistry The Mole Concept The Mole. CH; ~C== Hjc (S)-3-methyl-4-hexyne b. You need to add up the masses of all of the atoms in that one molecule and use them instead. (1lb = 453.6 g) b. Cl- and S When applied to molecules, one mole of molecules is the relative molecular mass of that molecule, which is the summation of the individual relative atomic masses . Select one: d. CH2.3 a. e. 48 torr, Cinnamaldehyde (132.16 g/mol) is used as a flavoring agent. I will list five. c. lower left, upper right So this is gonna be more mold conversions. c. P(0) - 0 3. 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.There is insufficient evidence t0 support the null hypothesis. e. basic, Picric acid has been used in the leather industry and in etching copper. What process involves the addition of a hydrogen molecule to compounds containing multiple bonds? b. PVC b. Select one: Select one: e. 0.045, The structure of Vitamin B1, thiamine, is shown here. Which of the following statements is not true? Arsenic | As | CID 5359596 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards . e.125B. Which acts as a Lewis acid this reaction? The atomic weight can change because it depends on our understanding of how much of each isotope of an element exists. IfX is the associated random variable, what is E(X)? d. 81.63 mmHg I want to know if she was a four on the bottom to cancel it out for every three moles of H two. e. 2.5 105, Since arsenic is a nonmetal, As2O3 is expected to be a/an _____ oxide. d. 55.85 g d. 2n2. c. P(0) - 0 3. b)How far from the base of the cliff does the stone strike? S a. (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 a. polybutylene. d. KBr d. Amino acid b. ICl2 e. Coagulation, Enflurane is an effective gaseous anesthetic with relatively low flammability. A) Beaker #1 because one sulfur atom weighs less than one arsenic atom so you need more of the sulfur atoms to fill the beaker. The correct answer is: Try different coefficients and subscripts to balance the number of atoms. How many grams Arsenic in 1 mol? d. 8.23 1014 s-1 a. C2H6 b. ICl3 c. 16 p, 31 n, 16 e So first we do this by comparing the ratios. Pethanol = 50.0 torr at 25C. d. 0.21 c. As The correct answer is: the liquid level in a capillary tube will rise above the surrounding liquid and the surface in the capillary tube will have a concave meniscus. We want to get HBO out of this. a. . (For water, Kf = 1.86 C/m.) 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)? So 0.125530 point 01285 by two. the mass of exactly 1 mole of methanol. Id give a reason for your bo cac" the defir Biochem/pH review 1. Which of the following is the empirical formula for hexane, C6H14? 2, 2021, thoughtco.com/avogadros-number-example-chemistry-problem-609541. c. K2MnO4 Please consider the following alkane. a. b. HFO3 d. 3.8 x 103 g Which one of the following is a strong acid? e. 0.29, Estimate the age of a bottled wine that has a tritium, 3H, content 60% that of freshly bottled wine. So to first balance this one, let's look at the S. 04 1st. 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. Label all primary, secondary, and tertiary carbons. 109 mmHg d. 4f 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. The . e. n2. b. C6H14 Carbon, C, Z = 6 c. 46.7489 g 81 from chapter eight in this problem were asked to, uh, her first. 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? d. Mn2+ and Ar 54 torr Which oxide is an amphoteric oxide? When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. 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. How many grams of chlorine is that? An unpolarized beam of light with intensity 10 = 98.8 lux is incident on three ideal polarizing filters (lux = 2.). d. ion-dipole forces Barium is a nonmetal. My name is agenthammerx, a Master Answerer and Engagement Team Member here on Brainly. 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. The strongest elemental oxidizing agents are found in the _________ _________ region of the periodic table while the strongest reducing agents are found in the ________ ________ region of the periodic table. c. 4.26 10-12 M You can view more details on each measurement unit: molecular weight of Arsenic or mol The molecular formula for Arsenic is As. Select one: Using dimensional analysis: . 40.8C What is your total dollar return on this investment? a. a. 12.9% It has an acid dissociation constant of 0.42. Silicon is a nonmetal. e. K+ and Cl-, What products are formed from the reaction of Cl2(g) with I-(aq)? c. Srxn< 0, Hrxn < 0 a. Polystyrene-polybutadiene 1.48 10-24 g So this is 1/1. e. molecular solids, Use the following data to determine the molar heat of vaporization of chlorine gas. c. 8 We got 0.125 rolls of H two. So let's compare this massive magnesium sulfate with the mass that formed when we started off with magnesium hydroxide. ThoughtCo, Jun. a. light The nineteenth century chemists arranged elements in the periodic table according to increasing Select one: a. atomic number. Assume that the solute addition does not significantly change the volume of liquid in the beaker. Carbon monoxide is produced by incomplete combustion of fossil fuels. e. Ernest Rutherford, Potassium permanganate is a strong oxidizer that reacts explosively with easily oxidized materials. Select one: The atomic mass of arsenic is 74.92 g/mol which suggests that the mass of 1 mol of arsenic atom is 74.92 g. 1 mol of arsenic atom contains 6.023 1023 number of arsenic atoms. e. H3C-CH2-O-H, A metal such as chromium in the body-centered cubic lattice has _______________ atom(s) per unit cell. d. 79.2C 34.7 kJ/mol And the atomic massive option at 16 ages one so well approximately 18 g of HBO and everyone more mm. a. Zn2+ and Cu2+ c. Mass Um So for acid and from this point we can calculate the mass of magnesium sulfate by multiplying with the molar mass of magnesium sulfur, which we said is 1 20 .36 g per month. Which of these describes the amount of energy required to remove an electron from an atom? Select one: a. (b) Do you expect $\mathrm{CO}$ to be paramagnetic or diamagnetic? e. 8. Jump to main content . So the mess off hydrochloric acid equals through the most of hydrochloric acid. 126C e. 165.93 mmHg. b. surroundings heat up, but there is no change in system's energy. a. K 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. c. 100 g CCl4 Select one: e. None of the above. d. Br3F Select one: Select one: Select one: (b) Do you expect $\mathrm{CO}$ to be paramagnetic or diamagnetic? If this solution is ideal, its total vapor pressure at 20C is From the formula (H2O), you know there are two hydrogen atoms and one oxygen atom. The correct answer is: one carboxylic acid group and one amino group. d. system heats up but there is not change in the energy of surroundings. 1 mole = 6.022 X 10 -23 atoms. 100 g C2H4 A given number of Arsenic atoms was 2.11e21 (or 2.11x10^21, e and x10^# mean the same thing). e. its ability to catenate. H Solute X has a molar mass of 30 g/mol. c. 0.145 d. 4.0 10-6 The September 30 bank statement for Cadieux Dear staff, This is Yu.Zhou. Select one: (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. Calculate the molecular mass of tetraphosphorus decaoxide, P4O10, a corrosive substance which can be used as a drying agent. (R = 1.096776 107 m-1; c = 3.00 108 m/s) a. Select one: 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: d. 12.4 kJ The nucleus is composed of protons and neutrons. e. ion-ion forces. b. Note that mole 1000 millimoles, Purine ' K comoe 6a 0 6mmtz atucta hused Sand 6tenbened ~ n nbora and pyridine aphosphate Srat and a bas6 deoxyribose and pyridine, Phosphomus 32 has hall-lite ol 14,0 duys. Select one: If the mass of a substance is known, the number of moles in the substance can be calculated. b. Select one: e. Not enough information is given to determine which solution has the highest vapor pressure. The atomic mass is used to covert between grams and moles. a. R-CH2-C-NH2 This would be 0.25 liters time 0.5 solar concentration is able to 0.125 malls of H two S. 04 Well on this side we do some bold conversion. So the Miller masses 36.46 grams per mole for h c e o. Select one: e. More that one of these oxides are amphoteric. Vitamin B1 is most soluble in _________. a. Sn b. a. LDPE Round The original measurement of atoms (4.83 10 ) has 3 significant figures, so our answer must have the same. a. Si d-Calculate the mass in grams of one calcium atom. Thank you for taking initiative to check out Brainly and for posting your first question! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. e. Polyethylene, The correct answer is: Polystyrene-polybutadiene, What is the term used for findings that are summarized based on a pattern or trend? Atomic weight is a weighted average of the mass of all the atoms of an element, based on the abundance of isotopes. 4 Select one: b. 15 p, 16 n, 15 e b. a. a. e. 43.9140 g, Which of the following is a nonmetal? Atomic Mass of Arsenic. 3.0 10-2 65.39 g 1.09 x 10-22 8 3.94 x 10258 65.39 amu. 100 g CH4 a. Hexane-heptane Which of the following polymers is used in plastic food bags and wraps? And now we can go ahead and do some calculations. Select one: d. The greater the pressure of a gas over a solution, the greater its solubility. That's equal to one times. Discuss circumcision and the arguments for and against it. What is the mass of one atom of magnesium in grams? This is approximately the sum of the number of protons and . (c = 3.00 108 m/s) c. C3H7 If 0.5 moles of hydrofloric acid ar Now we have two aluminum isles on the product side, but only one on a reaction size or put you here and now for a number of hydrogen is there are only two on the product side. Capillary tube is used in "coffee cUp calorimeter" experiment Indicator is used in "stoichiometry" experiment Mass balance is used in all CHEICOI laboratory experiments. Turning hair yellow with bleach e. 2.43 kg, The half-life of 14C is 5730 yr. O Select one: The cost of electricity is $0.126/kWh. Select one: mass (m) = moles (n) molar mass (M) The molar mass of the element arsenic (As) is 74.922 g As/mol As. a. Gases expand as their temperature increases because the gas molecules are moving more rapidly. However, its laboratory use has been restricted because it dehydrates on standing and can become shock sensitive. If there is one. When a sample of benzoic acid is dissolved in ether, the vapor pressure of the solution is 342 torr. b. Srxn > 0, Hrxn < 0 Plastic it tells us how many grams are in one mole of that substance. b. an effective antidote for heavy metal poisoning (e.g., Pb2+ and Hg2+). You want to first convert the number of atoms to mols of atoms. b. P d. polyvinyl chloride. Top Answer. c. 0.27 One important feature of the chemistry of carbon is 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. The density of "heavy water" at 20.0C is 1.1053 g/mL. c. He 33.8% And then we need to use the Mowlam. c. BaO The answer is rounded to three sig figs, the number of sig figs you have for the number of . b. a. Select one: . b. Al2O3 Which of the following is an example of an observation? d. the area of the cubic cell b. I am here to welcome you to the site! d. 12.45 b. an ionic bond. If 12.23 g of bromomethane are produced when 5.00 g of methanol is reacted with excess HBr, what is the percentage yield? Select one: Thanks. a. acidic The orbitals have the same energy order as those of the $\mathrm{N}_{2}$ molecule. B) Beaker #1 because it contains more moles of sulfur atoms versus the number of moles of arsenic atoms in Beaker #2. But that's not relevant to this problem and sodium chloride. a. its large radius that allows other atoms to fit easily around it. Let's say, for example, you want to know the mass of a single atom of water. The axis of the first filter (filter A) makes an angle of 18 with the vertical and the axis of the second filter (filter B) makes an angle of 37 with the vertical. H We assume you are converting between grams Arsenic and mole. (R = 8.314 J/K mol) b. ionic Select one: d. 5.44 mol Which one of these represents a chemical change? one mole = 6.0210 atoms So number of moles of arsenic are 1 mol. Which of the following ligands has two different types of donor atoms? Circle the most stable moleculels. c. 3 And now we want to find a mass of Htoo produced. So, you know how many atoms are in a mole. What is its formula? Radical polymerization Although the problem was worked using carbon (the element upon which Avogadro's number is based), you can use the same method to solve for the mass of an atom or molecule. b. water If the rope makes an angle of 30 with the positive x-axis and the coefficient of kinetic friction between the crate and ground is 0.560. So this is 1/1. a. vapor pressure is exactly 1 atmosphere. An amino acid is a compound that contains at least Select one: b. upper right, lower left Which of the following is least helpful in balancing an equation? c. NH3 2 moles Arsenic to grams = 149.8432 grams. To do this, we'll use the above relationship in italics (6.02 x 10 23 atoms in one mole) and the molar mass. d. 32 p, 31 n, 32 e b. c. the liquid level in a capillary tube will drop below the surrounding liquid and the surface in the capillary tube will have a convex meniscus. Does this match the bond order predicted by the electron-dot structure? One mole of carbon is 6.022 x 1023 atoms of carbon (Avogadro's number). Which of the following is a molecular formula for a compound with an empirical formula of CH? Solvent A has a density of 0.8 g/mL, and a molar mass of 40 g/mol. Select one: b. H2SO3 Select one: c. 246 torr What is the coordination number for Fe? c. Cl- Select one: In this context, it is the number of atoms in one mole of an element. Atoms are the fundamental building blocks of all matter and are composed of protons, neutrons, and electrons. d. 2.35 10-17 M a. Select one: 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. How much wor Earth has a radius of 6.38 106 m and rotates with a period of 23.9 hours. d. amorphous solids 19.5 kg c. S c. 6 c. Silk e. polyethylene. One atomic mass unit is equal to 1.66 x 10-24 grams. 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. (c) What is the bond order of $\mathrm{CO}$ ? 12.9 kg d. lower right, upper left What is the intermolecular force that exists between a magnesium ion and hydrogen sulfide? 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. Which of these pairs consists of isoelectronic species? All this works out two A mass of zero seven 4 to 0 .742g of magnesium sulfate. 1.8 torr Finding molar mass starts with units of grams per mole (g/mol). d. K(MnO4)2 b. KMnO4 d. neutral b. Paraffin wax begins to melt at 57C. To find a mass. 119.00amu 39.10amu+79.90amu= 118.95 => 119.00amu It's easy to find the mass of a single atom using Avogadro's number. 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.
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