A substance has a molecular mass of 143151 u. Find the mass of one molecule of this substance.

Q: A sample containing 15.23 moles of calcium fluoride is equal to how many gram

A: A gram is a scientific unit of mass that was defined as the actual weight of a volume of distilled…

Q: A student obtains 50.00 grams of calcium hydroxide.  Determine the number of hydroxide ions present…

A: The chemical formula of calcium hydroxide is Ca(OH)2. One molecule or unit of it contains one…

Q: 1) a chemical mole A-is a kind of material B-is a large molecule C-contains an undetermined number…

A: Mole concept: Avogadro's number = 6.022 × 1023 1 mol of any substance contain 6.022 × 1023 molecules…

Q: An experiment requires that enough ethanol be used to yield 14.0 g of oxygen. How much ethanol must…

A: Theoretically, two moles of ethanol (C2H5OH) are required to produce one mole of oxygen gas from an…

Q: The molar mass of a compound was determined to be 23.99 g/mol. If the sample contains 3.2 mol, then…

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Q: 80 grams of sodium hydroxide contains how many molecules?

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Q: 25.  Determine which of the following contains the greatest mass of aluminum: 122 g of AlPO4, 266 g…

A: Molar mass is defined as mass of one mole of a substance.One molecule of AlPO4 contain one atom of…

Q: order to convert the number of particles of a substance into the number of grams of that substance,…

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Q: mass in grams

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Q: Assume that the molar mass of A is 82.93 grams per mole and the molar mass of E is 24.61 grams per…

A: Atoms are the smallest unit of the matter, anything which occupies space and has mass is known as…

Q: A compound is found to consist of 1.37g of iron and 2.62g of chlorine. What is the percent by mass…

A: Given that: mass of iron = 1.37 g mass of chlorine =  2.62 g  To find: the percent by mass of…

Q: How many grams of zinc will contain the same number of atoms as 24.6 g of copper? Express your…

A: Given weight = 24.6 g of copper

Q: Q9) How many moles of Cl atoms are in 65.2g of CHCI3 ? a) 15 b)35 c) 30 d) 3.5

A: Provided amount of CHCl3=65.2g Molar mass of CHCl3=119.38g

Q: on is 1.00 g/mL. The molar mass of LizPO, is 115.79 g/mol and the molar mass of H20 is 18.02 g/mol.…

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Q: Number of atoms of C in 16 moles of C,H10 are: O 6.64x10^23 385.41x10^23 O 24.09x10^23 O 96.35x10^23

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Q: A) Suppose one molecule of Chlorophyll X contains 5 oxygen atoms. Chlorophyll X is 8.95% oxygen by…

A: Molecular mass of Chlorophyll X can be found out by using the mass percentage of Oxygen and number…

Q: What is the mass, in grams, of 557 copper atoms?

A: We have to calculate the mass, in grams, of 557 copper atoms.

Q: What is the percent by mass of carbon

A: Percent by mass = (mass of C/total mass of compound) × 100%

Q: Suppose a student measured the mass of a sample that has a known mass of 40.5809 g using an…

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Q: - Part A If Avogadro's number of pennies is divided equally among the 276 million men, women, and…

A: We know that, Avogadro's number of pennies = 6.022 x 1023 pennies. Convert these pennies into…

Q: Determine the mass in grams of 2.25 × 10²¹ atoms of copper. (The mass of one mole of copper is 63.55…

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Q: Determine the number of moles of the compound and determine the number of moles of each type of atom…

A: a) Since molar mass of KBr = 119 g/mol Hence moles of KBr = mass / molar mass = 2.12 / 119 = 0.0178…

Q: Determine the mass in grams of 3.75 × 10²¹ atoms of zinc. (The mass of one mole of zinc is 65.39 g.)…

A: Mass of one mole of zinc is 65.39 g. Number of atoms of zinc are 3.75×1021 .

Q: What mass of barium bromate, Ba

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Q: What is the mass of 29.4 mol of benzene (C6H6)?

A: Mole is a unit of measurement to represent the amount of substance. It can be expressed as,…

Q: e mass of this piece of magnesium

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Q: A certain ore is 30.3% nickel by mass. How many kilograms of this ore would you need to dig up to…

A: Introduction: We have to calculate the mass of ore.

Q: Determine the mass in grams of 4.78 × 1021 atoms of chromium. (The mass of one mole of chromium is…

A: The number 6.023 × 1023 indicates the number of atoms or molecules in a mole of any substance is…

Q: A sample of a compound is found to contain 21.82 g of carbon, 9.16 g of hydrogen, 20.42 g of oxygen,…

A: Mass of compound is,

Q: How many molecules of NO are in a 22.5 g sample of the compound?

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Q: 25. A sample of a compound contains 9.49g silver and 3.12g chlorine. A second sample of the compound…

A: Given: 1) A sample of a compound contains Silver with mass = 9.49 g 2) A sample of a compound…

Q: sample of Ammonia gas ( NH3) has a mass of 76 grams. How many molecules are in the sample.?

A: Given mass of Ammonia is 76 grams  molar mass of NH3 = 17.031 number of moles= mass / molar mass =…

Q: How many MOLECULES of carbon dioxide are present in 6.99 grams of this compound ?  molecules. and…

A: 1) Given: Mass of CO2 = 6.99 g.

Q: How do you determine the starting mass before an experiment when given the collected mass of…

A: A chemical reaction refers to the process in which one or more substances also known as the…

Q: What is the mass of 136 molecules of HCL ?

A: We have to find the mass of 136 molecules of HCl. Molar Mass of HCl = 36.5 g mol-1

Q: Dichloromethane CH2Cl2  (given density=1.33g/mL) volume: 21.0mL Find the Moles, molecules, and…

A: The density of dichloromethane CH2Cl2 is = 1.33 g/mL The volume of dichloromethane CH2Cl2 is =…

Q: What is the mass of 22.8 moles of copper atoms? Round your answer to the nearest hundredth. Be sure…

A: Given : Moles of copper = 22.8 mol Atomic mass of Cu = 63.546 g/mol

Q: Part B How many grams are in 0.290 mole of Cl2 ? Express your answer to three significant figures.…

A: Solution:-  Mass of Cl2 is 35.5+35.5=71 gm

Q: Convert mass % to grams (assume 100gexactly)•Convert grams to moles.•Write simplest ratio of the…

A: Hello. Since your question has multiple questions, we will solve the first question for you. If you…

Q: Q 7) If the mass of barium sulfate is 0.372 g, find the number of the moles.

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Q: 1) Determine the number of moles in each sample: a) 38.2g sodium chloride b) 36.5g nitrogen monoxide…

A: Interpretation -  To determine the number of moles in each sample - 38.2g of sodium chloride  36.5g…

Q: 1. Vitamin C has the formula C,H¸Og. Calculate the number of vitamin C molecules present in a 0.250…

A: The molecular formula of the vitamin C is = C6H8O6 The mass of vitamin C is = 0.250 g The number of…

Q: Can the mass of one mole of sample A be the same as the mass of one mole of sample B? Explain your…

A: 1 mole of any substance contains 6.023 × 1023 molecules, atoms or ions.

Q: 1. What does the mole measure? a. mass of a substance b. volume of a substance c. density of a…

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Q: A 2.33 mole sample of a substance weights about 137 grams. What is the substance

A: 137/2.33 = 58.79  Nearly equal to the mass of NaCl.

Q: you

A: Careful mass measurement in chemistry lab is very necessary. In lab we use analytical balance or…

Q: Vitamin C has a formula of C6H8O6, calculate the number of vitamin molecules present in a 0.250g of…

A:

Q: Boric acid, H3BO3 is a mild antiseptic and is often used as an eye was. A sample contains 0.543…

A: Given: the number of moles of boric acid=0.543 mol. Molar mass of boric acid =61.83 g/mol To find:…

Q: How many grams of C are present in 1.66 grams of carbon tetrachloride?  how many grams of carbon…

A: To calculate the mass of constituents present in a compound, we must have the molar mass of…

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.