explain how you determined the number of moles of cn in each compound

Calculateq, w, andUfor the reversible isothermal expansion at 500 K of 3.0 mole for a perfect gas from 500 cm3to 1500 cm3. Construct a flowchart to show how you would calculate the number of moles of silicon in a 37.0 g sample of orthoclase (KAlSi3O8), a mineral used in the manufacture of porcelain. To determine the mole of cyanide in this compound, you would look at the compound to see how many molecules od Mg and CN are in the substance . hypochlorous acid HClO 3.0 x 10 49.8 grams of KI is dissolved in 1.00 kg of solvent. Q:Calculate the number of Calories present in a Burger King Whopper withCheesethat contains 58gg, Q:Does a reaction occur when aqueous solutions of ammonium sulfate and lead(II) acetate are combined?, A:Since you have asked multiple questions, we will solve the first question for you. 0.540 Making an ICE table A flask is filled with Fe 3+ and SCN - , A flask is filled with Fe3+ and SCN-, which decomposes according to the following reaction, Fe3+(aq) + SCN-(aq) <==> [FeSCN2+] (aq). Freeman and Company/BFW Part 2: Vitamins 1. In this case, the mass given (35.00 g) is less than the molar mass, so the answer should be less than 1 mol. *Response times may vary by subject and question complexity. The quantity of a substance that contains the same number of units (e.g., atoms or molecules) as the number of carbon atoms in exactly 12 g of isotopically pure carbon-12. concentration You did this calculation and put down the value previously. Assume the 1:0 Stacked vertically, a mole of pennies would be 4.5 1017 mi high, or almost six times the diameter of the Milky Way galaxy. PLEASE NUMBER EACH ANSWER FOR EACH QUESTION! According to the most recent experimental measurements, this mass of carbon-12 contains 6.022142 1023 atoms, but for most purposes 6.022 1023 provides an adequate number of significant figures. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. How many moles of aluminum do you need to make a six-pack of cans. Because each element has a different atomic mass, however, a mole of each element has a different mass, even though it contains the same number of atoms (6.022 1023). The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 1023 atoms, molecules, or formula units of that substance. And 1 mol of chlorine (Cl) has a mass of 35.453 g (the mass on the periodic table). The properties are more like chemical A. b. Then, add together the atomic weight of each of the atoms in the formula, which you can find using the periodic table. SHOW ALL YOUR WORK! The concept of the mole allows us to count a specific number of individual atoms and molecules by weighing measurable quantities of elements and compounds. Will products be consumed or created? < 1 mole of water molecules A:Here , the answer will be option (d), i.e. 102 OH One mole of isotopically pure carbon-12 has a mass of 12 g. For an element, the molar mass is the mass of 1 mol of atoms of that element; for a covalent molecular compound, it is the mass of 1 mol of molecules of that compound; for an ionic compound, it is the mass of 1 mol of formula units. It allows determination of the number of molecules or atoms by weighing them. $('#comments').css('display', 'none'); First week only $4.99! A mixture of 0.10 mol NO, 0.050 mol H, and 0.10 mol H0 are placed in a 1.0 L vessel at 300 K., A:Given, A Determine the number of atoms of each element in the molecule. 1.00 mol of an ideal gas, initially occupying 12.2 L at 298 K, expands isothermally against a constant external pressure of 1.00 bar until the pressure of the gas is equal to the external pressure. How do I find its empirical formula? B. C. Cite evidence to justify your response. An unknown weak acid with a How many moles of water molecules are in 15.6 grams of liquid water? By signing up you are agreeing to receive emails according to our privacy policy. Calculate the ratio of moles of \( \mathrm{H}_{2} \mathrm{O} \) to moles of anhydrous \( \left.\mathrm{KAl}_{2} \mathrm{SO}_{4}\right)_{2} \), Show all work including units, Note: Report. a. polar The overall cell, A:(a) In the given overall cell reaction, lithium metal (Li) is consumed, indicating that it is the, Q:Part 3: Preparation of a Solution of Oxalic Acid Hydrate at Unknown Concentration include the proper phases, A:The basic equilibrium for a weak base A- is written as follows: A chemist prepared a compound that she thought had the formula FeI3. Decide whether each statement is true or false and explain your reasoning. Because of the way in which the mole is defined, for every element the number of grams in a mole is the same as the number of atomic mass units in the atomic mass of the element. For example, a ratio could be 1.333, which as a fraction is 4/3. Many familiar items are sold in numerical quantities that have unusual names. D) BaCl2, A:Option (C) Ca2F is incorrect. 1.26 Chemistry. CO Stilnox - the brand name of, A:Given,Themolarmassofzolpidem=307.39gmolThemolarmassofhemitartratresalt=764.87. Carbon tetrahydride=> CH4, Q:If you combine 330.0 mL of water at 25.00 C and 120.0 mL of water at 95.00 C, what is the final, A:Given: = 65.38 grams The term "thermal conductivity" describes a material's capacity to conduct or, Q:According to the table in the text, hydrogen fluoride (HF) has a pk, of 3.2. A The molecular mass of ethylene glycol can be calculated from its molecular formula using the method illustrated in Example 1: The molar mass of ethylene glycol is 62.068 g/mol. He . What charge does CN have in KCN and in Mg (CN),? % of people told us that this article helped them. Keep in mind that the lowest number of atoms in a molecule for some elements might not be 1. wikiHow is where trusted research and expert knowledge come together. Online employment recruitment is especially popular. Lewis dot structure. Accomplish this by dividing each by its respective atomic mass on the periodic table. reduce, A:Thermal Conductivity Q:For the disaccharide, give the "numbers" for the glycoside bond (reading left to right). A sample consisting of 1.00 mol of a monatomic ideal gas at 30 is compressed reversibly and isothermally from 50.00 L to 20.00 L. This would give you the mass of 1 mol of sodium chloride which would be about 58.443 g. If your compound were potassium sulfide (KS), you would add the mass of 2 mol of potassium (2 39.097 g) and the mass of 1 mol of sulfur (32.064 g). Conversely, it enables chemists to calculate the mass of a substance needed to obtain a desired number of atoms, molecules, or formula units. Question-Determine the empirical formulas for the compounds with the following percentage composition: Question-A major textile dye manufacturer developed a new yellow dye. Pellentesque dapibus efficitur laoreet. :CEN. Support wikiHow by Did you know you can get expert answers for this article? ATTEMPT TO SOLVE YOUR PROBLEM: Include your email address to get a message when this question is answered. We also described the law of multiple proportions, which states that the ratios of the masses of elements that form a series of compounds are small whole numbers. The numerical value of Avogadro's number, usually written as No, is a consequence of the arbitrary value of one kilogram, a block of Pt-Ir metal called the International Prototype Kilogram, and the choice of reference for the atomic mass unit scale, one atom of carbon-12. Calculate the change in Helmholtz energy, G (in kJ). Atoms are so small, however, that even 500 atoms are too small to see or measure by most common techniques. It is calculated by adding together the atomic masses of the elements in the substance, each multiplied by its subscript (written or implied) in the molecular formula. A first-order reaction is observed to have a rate constant of 45 min., A:4) So you can use this to calculate the value of x and therefore the equilibrium concentrations of Fe3+ and SCN-. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations, This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. A:We know that the Kohlrausch plot is a plot of molar conductance (lamda) versus square root of, Q:What was Dr. Ronald Gillespie's motivation for developing VSEPR theory? 102 Chemistry questions and answers. Clearly something clever is needed but first let us briefly review how to calculated molecular masses. 1.00 mol of an ideal gas, initially occupying 12.2 L at 298 K, expands isothermally against a constant external pressure of 1.00 bar until the pressure of the gas is equal to the external pressure. to explain how bonds form in, A:Here we need to explain what was the motivation of Dr. Ronald Gillespie for developing VSEPR theory., Q:8.77 g of an unknown gas occupies 7.46 L at 11 C and 1.74 atm. BaSO3 Molar Mass: 65.38 grams/mole It is given that, 4.57 mol sample of a gas at, Q:Assume that the activity coefficient of Ca2+ is 0.580 in a solution containing x M CaCl2 and 0.0064, Q:Consider the overall reaction system: CaCO3 (s) + CO (g) + HO Ca+ + 2 HCO3 At the very beginning of the reaction how much Fe3+ will be present in the flask initially? we need to explain the product formation, Q:Feedback NH3 of PGG2 (mM/min) For example, if you have 600 g of NaCl, then. Her studies are focused on proteins and neurodegenerative diseases. In the mentioned questions acid and base are reacting and we have to complete the chemical. CliffsNotes study guides are written by real teachers and professors, so no matter what you're studying, CliffsNotes can ease your homework headaches and help you score high on exams. NaOH +NaNO: To obtain 1 mol of carbon-12 atoms, we would weigh out 12 g of isotopically pure carbon-12. In the box below draw the products of, Q:Calculate the [H3O+] that would result from a .077m solution of HC2H3O2 magnesium nitride are mixed with e) wavelength We do not have enough information. Deriving the Molecular Formula from an Empirical Formula, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/b7\/Find-Molecular-Formula-Step-1-Version-2.jpg\/v4-460px-Find-Molecular-Formula-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/b\/b7\/Find-Molecular-Formula-Step-1-Version-2.jpg\/aid3408618-v4-728px-Find-Molecular-Formula-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"