Show all work for all parts of the question for full credit and use your units. Use 2 decimal places for each answer. Answer all parts of the question below. For KNO3: a. What is the molar mass? b. What is the percent composition of each element in the formula?

Q: Determine the number of moles present in a 1000 g gold bar. Round off your answer to the nearest…

A: Mass of gold = 1000g We have to determine the no. of moles present in 1000g of gold bar.

Q: Use the equeation for questions below Cl2+F2 -->ClF3 How many grams of CLF3 form from 130.0 grams…

A: The value is given as follows:

Q: ny moles c

A:

Q: A compound contains iron and bromine. A sample of the compound contains 3 g of iron and 11.39 g of…

A: A sample of the compound contains 3 g of iron and 11.39 g of bromine.  as mass is provided , we can…

Q: Part B How many grams of sodium oxide can be synthesized from 17.4 g of sodium? Assume that more…

A: Given:Mass of sodium(Na)=17.4 g

Q: Part B Calculate the number of CO2 molecules in 1.19x102 mole of CO2. Express your answer using…

A:

Q: 11. Sodium sulfate is used in the manufacture of detergents. a. Identify each of the component…

A: From the present of the atom present in a molecule we can calculate the empirical formula .

Q: Briona Bensha Grams/Moles Calculations Given the following, find the number of moles: 1) 30 grams of…

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Q: Part B: NazCO; Reaction: 1. Determine the experimental mole-to-mole ratio of NazCO3 to NaCl from…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Show all work for all problems for full credit Percent Composition Calculate the percent composition…

A: Percentage composition of the element is percentage of that element in 100% of compound.  (1) In…

Q: Calculate the percent composition for the following compounds. Use the example above to help you.…

A:

Q: 1. Determine the experimental mole-to-mole ratio of Na2CO3 to NaCl from reaction data. a) First,…

A: Note - Since you have asked multiple questions, we will only do the first question for you. To get…

Q: How many moles are present in 0.868g of Mg? include units.

A: We have given that  How many moles are present in 0.868g of Mg? include units

Q: A compound containing nitrogen and oxygen is found to contain 1.52 g of nitrogen and 3.47 g of…

A:

Q: Using Molar Mass and Avogadro Part B Caffeine is a bitter stimulant drug and is found in varying…

A: Caffeine had molecular formula C8H10N4O2 Means,  1 mole of caffeine has 8 moles of carbon, 10 moles…

Q: Which has more mass, a mole of potassium or a mole ofsodium? Explain your answer.

A: The atomic mass of the element is equal to the sum of the number of protons and neutrons present in…

Q: For the formula  K3N  What is the percent Nitrogen in the compound

A: Given, compound K3N Molar mass of K = 39 g/mol Molar mass of N = 14 g/mol

Q: 1. Determine the experimental mole-to-mole ratio of NaHCO; to NaCl from reaction data. a) First,…

A: We have to find mol to mol rate of NaHCO3 and NaCl

Q: A 28.57 gram sample of X contains how many moles? (Assume that the molar mass of X is 25.77 grams…

A:

Q: A student measures out 12.1 grams of magnesium chloride. How many moles does he or she have?

A: Given Mass of magnesium chloride = 12.1 g Standard value  Molar mass of magnesium chloride…

Q: How many total moles of atoms are present in 4.00-mole samples of each of the following compounds?…

A: Given, a) S2N2  b) NSF     4.00-mole sample

Q: thimble of water contains 4.0×1021molecules. The number of moles of H2O is?

A: Moles =molecule/6×1023 Moles= 4×1021/6×1023 Moles= 0.66×10-2

Q: Find the percent compositions of all of the elements in the following compounds. Round to the…

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Q: What is the percent by mass of sulfur in SO1? Your Answer:

A: Introduction : We have to calculate the percent by mass of SO1.

Q: H2(g) + C12(g)    2HC1(g) How many moles of HC1 are produced from 10 moles of H2? (answer as a mole…

A:

Q: Aluminum oxide, Al203, is used as a filler for paints and varnishes as well as in the manufacture of…

A:

Q: In one experiment, a student used 0.21 g of aluminum and excess hydrochloric acid. a. Calculate the…

A: Given that 0.21 g aluminium react with excess hydrochloric acid.

Q: Conversions from moles to molecules involve how many steps? A. 1-step because 1 mole = 6.02X10^23…

A:

Q: 7.00 g of iron is reacted with 3.00 g of oxygen. Find the empirical formula.

A: Since moles of Fe reaction = mass of Fe / atomic mass of Fe  and moles of O reacting = mass of O /…

Q: please Answer this question in the same format thats in the picture below on paper, answer…

A: Number of moles = Mass/Molar mass

Q: A flask contains 3.75 moles of hydrogen gas. How many hydrogen molecules are present in the flask?…

A: We are having 3.75 moles of hydrogen gas. Hydrogen gas exists as H2 molecule.

Q: Part C How many moles are in 20.0 g of MgCl2 ? Express your answer to three significant figures.…

A: Mole concept:  A mole  is the quantity of a substance that contains atoms, molecules, ions,…

Q: 6NO + 4NH3 --> 5N2 + 6H2O Mole ratio of NO to N2 NH3 to N2…

A:

Q: 47) Calcylate the percent listed first in the formulas by mass of element

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Q: For the molecular compound silicon dioxide, what would you multiply "grams of SiO2" by to get the…

A:

Q: Chemistry Determine how many atoms are in each formula and then determine the molar mass. Show your…

A: Atoms are made up of neutrons, electrons and protons. Protons are positively charged particles.

Q: Calculate the number of CC atoms in 0.997 molmol of CC.

A: We know that the total number of atoms in 1mole of a substance is constant that is the avogadro's…

Q: %. The percent by mass of bromine in PNBR2 is (Enter your answer to four significant figures.)

A:

Q: This is the chemical formula for calcium phosphate: Ca,(PO,); Calculate the mass percent of oxygen…

A: Given :-  Chemical formula of Calcium phosphate = Ca3(PO4)2  To calculate :-  Mss percent of Oxygen…

Q: moles

A:

Q: Solve this attachment

A: The given balanced equation is rewritten below:  2N2  + 5O2 →2N2O5From this equation we can conclude…

Q: A beaker holds 4 x10^23 molecules of H2O. How many moles of H2O are in the beaker? Round to the…

A: The provided molecules of H2O=4×1023 molecules According to the Avagadro one mole of any substance…

Q: Consider the 124g sample of the compound? Determine the moles of calcium chloride present (a)number…

A:

Q: A standard number 2 pencil contains 3.0x10 grams of graphite (Formula: C). How many moles of…

A: Given : Mass of graphite i.e carbon = 3.0 X 10-4 g And molar mass of carbon = 12.011 g/mol.

Q: How many grams are present in 17.82 moles of X? (Assume that the molar mass of X is 40.38 grams per…

A: Given, Molar mass of X = 40.38 g/mol Moles of X = 17.82 moles Mass of X = ?

Q: 1. 5.6 moles of NaCl to grams

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Question 6 Complete the following dimensional analysis problem on a separate sheet of paper. This…

A:

Q: For the molecular compound phosphorus triiodide, what would you multiply "molecules of PI3" by to…

A: Answer: 1 mole PI3 =6.02 x 1023 molecules PI3 Molecules of PI31 mole PI36.02 x 1023 molecules PI3

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.