What number of atoms of nitrogen are present in 3.54 g of each of the following? a. glycine: C2H5 O2N atoms N b. magnesium nitride atoms N c. calcium nitrate atoms N

Q: A binary covalent compound contains 78.3% baron and the rest is hydrogen. Its molar mass is…

A: We have  Percentage of Boron (B)=78.3% Percentage of Hydrogen (H)=100-78.3=21.7% Atomic mass of…

Q: Which element is in excess?

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Q: inside the front cover of this book to calculate the mass in grams of each of the following samples.…

A: Note : As per our guidelines we are supposed to answer only first 3 subparts of first question.

Q: 1. A sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g. a. Record each step needed to calculate the…

A: We can calculate the moles of any substance from the following formula : Moles of substance = mass…

Q: A sample is found to contain 0.650 mole of a chemical substance. a. How many atoms are present if…

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Q: What is the molar mass of the following compounds?     N2H4                                     b.…

A: The molar mass of a substance can be defined as the mass of that substance present in one mole. It…

Q: D. Calculate the mass (g) of the following samples. 25) 238 moles of lead 26) 1.54 x 10° moles of Zn…

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

Q: Calculate the mass of 1 mole of the following compounds (round each elements to nearest 0.5 AMU,…

A: The molar mass of the elements rounded off is as follows:- Ca - 40.078 = 40 Br - 79.904 = 80 Fe -…

Q: Which one of the following molecular formulas is also an empirical formula?

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Q: A compound is 36.9% nitrogen and 63.1% oxygen. What is the empirical formula of the compound? s is…

A: To determine the empirical formula of the compound, we need to find the simplest whole-number ratio…

Q: What is the molar mass of the following compounds?     N2H4…

A: Molar mass of compounds depand molar mass of atom

Q: The semi-precious stone turquoise is a hydrate and with the chemical formula CuAl₆(PO₄)₄(OH)₈･4 H₂O.…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: What mass of compound is present in 4.10 moles of each of the following compounds? a. b. Mass= Mass=…

A: molar mass of NH3 = 17.03 g/molmolar mass of N2H4 = 32.04 g/molmolar mass of (NH4)2Cr2O7 = 252.06…

Q: Calculate the number of atoms of silver that are in 0.212 moles of silver. (Avogadro's number = 6.02…

A: Avogadro’s number, one mole of any substance (defined as its molecular weight in grams), is equal to…

Q: A compound containing carbon, oxygen, and hydrogen was found to have an empirical formula of CH,0.…

A: Empirical Formula is CH2O Formula mass of CH2O = 1 x Atomic mass of C + 2 x Atomic mass of H + 1x…

Q: How many hydrogen atoms are in a 1.0 g sample of CH3COOH? The molar mass of CH3COOH is 60.06…

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Q: When Oxygen is bubbled through a solution of sodium polysulfide, photographic hypo is produced. If…

A: answer is option a

Q: Cocaine has the structure shown below. It has a molar mass of 303.358 g.mol-1. Determine the number…

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Q: A compound is found to contain 31.42% sulfur, 31.35% oxygen, and 37.23% fluorine by mass. a. What…

A: we have to calculate the empirical formula and molecular formula of the compound

Q: Use compound formulas to determine element composition. A sample of pentanol, C5H120, contains 1.69…

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Q: Which of the following compounds has the largest molar mass?   a. BF3    b. H2O   c. NH3   d.…

A: Molar mass of B = 10.8g/mol Molar mass of F = 19.0g/mol Molar mass of N = 14.0g/mol Molar mass of C…

Q: Consider the following made-up compound: (JZ)3D8 Determine the percent composition of JZ in compound…

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Q: A compound has the mass % composition of 49.97 % tungsten, 15.23 % nitrogen, 34.79 % oxygen. What is…

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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.