1.) Calculate the molar mass of each compound. Keep at least one decimal place in atomic masses from the periodic table. KBr:        g/mol Al2S3:            g/mol   2.)Calculate the formula mass of each compound. Keep at least one decimal place in atomic masses from the periodic table. MgCl2:        amu

Q: Determine the empirical formula for a compound that is found to contain 10.15 mg P and 34.85 mg Cl.…

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Q: The ratio of each element's mass in a compound changes when the size of the sample changes.

A: In this question we have to tell that above statement is true or false with explanation.

Q: A salt crystal has a mass of 0.20 mg, How many NaCl formula units does it contain?

A: Given:Mass of NaCl = 0.20 mg = 2.0x10-4 g.Molar mass of NaCl = 58.44 g/mol.

Q: How many molecules are in sample? 85.26 g CCl4

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Q: 47: Determine the number of moles of molecules (or formula units) in each sample. 38.2 g sodium…

A: Answer 47 :- In this question we have to find out number of moles in each sample . Number of moles…

Q: 1. How many MOLES of carbon tetrabromide are present in 1.74 grams of this compound ? moles. 2. How…

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Q: Example How many molecules of O, are present in 6.25 moles? (why is this a molecule and not an…

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Q: Determine the chemical formula of each compound andrefer to the formula to calculate the mass…

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

Q: What is the correct empirical formula for glucose (C6H12O6)? O C3H,O3 O C2H4O2 O CH2O O C,H120

A: The molecular formula for glucose is C6H12O6 . The subscripts represent a multiple of an empirical…

Q: Consider a 7.36 gram sample of Calcium Phosphate.  1. How many formula units of calcium phosphate…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: many grams of hydra n atomic masses: C: 1 n: Avogadro's numbe r the numerical value

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Q: Complete the following table. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in…

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Q: Determine the number of moles (of molecules or formula units)in each sample.a. 55.98 g CF2Cl2…

A: a.

Q: What is the contribution of each Cs+ to the formula unit?

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Q: omplete the folowing sentences. 1. How many hydrogen ions (H+) are in a mole? . 2. What is the mass…

A: Fill in the blanks

Q: Determine the chemical formula of each compound and then use it to calculate the mass percent…

A: a.

Q: A compound is 82.6% carbon and 17.2% hydrogen. What will be the empirical Formula of the compound?

A: ANSWER

Q: Element, lonie Compound, Molecular Compound, Acid, or lon Formula Name 76) Ni(OH) 77) Na:CrO lonie…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: Calculate the mass percent composition of carbon in each carbon-containing compound. a. CH4 b. C2H,…

A: The mass percent of any element in any molecule/compound is its mass share towards the total mass of…

Q: How many molecules are in sample? 389 g CBr4

A: Given information,          Mass of CBr4 is 389 g

Q: 16. How many atoms are in one (molecule) formula unit of Fe2(CrO4)3?

A: Given -> Molecular formula = Fe2(CrO4)3

Q: 1. How many MOLECULES of boron tribromide are present in 2.51 moles of this compound ? molecules. 2.…

A: Number of moles is calculated by dividing given mass with molecular mass.

Q: 1. How many MOLECULES of carbon tetrafluoride are present in 1.59 moles of this compound ?…

A: Welcome to bartleby ! As per company norms we can't solve more than one question per session .So,I…

Q: 2. Determine the number of molecules or formula units in each sample. a. 32.4 g of lead(II)…

A: Given: a). 32.4 g of Pb3(PO4)2(s). b). 48 kg of MoO3(s). The molar mass: Pb3(PO4)2(s).=  811.54…

Q: Which is the correct formula for the compound whose percent composition is shown? к, 38.62 0, 47.51…

A: Sol.

Q: 1) Sasha has 4.83 x 1034 molecules of Ammonia (NH3). How many moles of Ammonia does Sasha have?

A: We are given molecules and of ammonia and we have to tell moles

Q: 6) 8.31 x 10 atoms magnesium (8.31X1024)(1) /6.02x1023-13.8mol 7) 4.52 x 10ª formula units NaCl 8)…

A: This problem can be solved by knowing that one mole consists of 6.022×1023 particles.

Q: You have a 125-g sample of one of these substances. You determine that it is made of 16.7 g H, 75.0…

A: A chemical compound often comprises the same elements in very same compositions by mass, according…

Q: Determine the number of moles (of molecules or formula units) in sample. 55.98 g CF2Cl2

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Q: Part 5-Calculating the molar mass (10 points)- You will need the periodic table for this part of the…

A: 1 mole of substance = 6.022 x 1023 unit (It may be atom or particle or ion).

Q: Calculate how many molecules there are in 16.4 g HF.

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Q: Classify the types of matter below: Name Formula Picture  Atom (Y/ N) Molecule (Y/ N)…

A: An atom is mainly composed of three sub-particles; electrons, protons and neutrons. These particles…

Q: 1. How many MOLECULES of water are present in 3.00 moles of this compound ? molecules. 2. How many…

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Q: Calculate the mass percent composition of carbon in each carbon-containing compound.a. CH4 b. C2H6…

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Q: 1. How many MOLES of phosphorus pentachloride are present in 1.47 grams of this compound ? moles. 2.…

A: 1.)Given: The mass of PCl5 is 1.47 g. Introduction: The number of moles can be expressed as he ratio…

Q: Calculate the molar mass of each compound. Keep at least one decimal place in atomic masses from the…

A: Given compounds are LiCl and Al2S3The atomic number of Li, Cl, Al and S from the periodic table with…

Q: how to get molecules count in the formula? for example H2O how many hydrogen molecules are in the…

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Q: What is the mass of exactly 1 mole of each of the compounds? N,O: Fe(CIO),: Fe(CIO, )3:

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Q: Calculate the formula mass for compound. HNO2

A: The given Compound is HNO2 To find:The formula mass of HNO2

Q: 1. How many ATOMS of nitrogen are present in 4.59 moles of nitrogen dioxide ? atoms of nitrogen. 2.…

A: Nitrogen Dioxide = NO2  Moles of NO2 = 4.59 Number of Molecules of NO2 = Moles × 6.022 × 1023 = 4.59…

Q: 1. How many atoms is 6.00 mole of sodium? 2. Convert Ó.024 mole to formula units of table salt. 3.…

A: Since you have posted questions with multiple subparts we will solve the first three subparts for…

Q: 1. How many MOLECULES of sulfur dichloride are present in 3.81 moles of this compound ? molecules.…

A: Moles of compound = 3.81mole 1mole = 6.023 × 10^23 molecule Hence,3.81 mole = 3.81 × 6.023 × 10^23…

Q: 1. How many GRAMS of calcium fluoride are present in 3.21 moles of this compound? grams. 2. How many…

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Q: Determine the number of moles of molecules (or formula units) in each sample. A. 48.4 g sodium…

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Q: A salt crystal has a mass of 0.12 mg. How many NaCl formula units does it contain?

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Q: Complete the following statement: 1 mole of any compound contains 6.0221 × 1023 atoms molecules or…

A: In chemistry, the Mole concept plays a very important role in describing the composition and…

Q: An unknown compound is said to have 67.6% mercury, 10.8% sulfur and 21.6% oxygen. Calculate its…

A: Empirical formula refers to the formula of a compound in which the elements are present in the…

Q: 5. How many moles are equal to 6.54x1025 formula units of potassium permanganate? 6. How many…

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Q: 1. How many MOLECULES of nitrogen monoside ace present in 4.22 grams of this compound ? molecules 2.…

A: Avogadro number: Given by Avogadro, According to him, 1 mole of substance contain 6.022×1023 number…

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.