How many atoms or ions of each element are in 164.5 g of the following substances?   (a) H2       ×  1025 H atoms   (b) Ca(NO3)2       ×  1023 Ca2+ ions       ×  1024 NO3− ions   (c) N2O2       ×  1024 N atoms       ×  1024 O atoms

Q: Name each compound and calculate its formula mass. (a) PtO2 (b) N½O5 (c) Al(CIO3)3 (d) PBr5

A: Chemical formula provides the chemical composition of the elements and all compounds has unique…

Q: How many atoms of O there in 30.6 grams of cadmium (II) phosphate?

A: Ans : 2.79 × 1023 atoms of O

Q: (a) A compound MX2 is formed from the M²+ and X¯ ions. The compound contains 86.8% of X by mass. In…

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Q: A patient is having an allergic reaction and takes a 50.0 mg tablet of the over‑the‑counter…

A: Given, Mass of diphenhydramine hydrochloride = 50.0mg. Moles of diphenhydramine hydrochloride can be…

Q: What number of atoms of nitrogen are present in 4.50 g of each of the following? (a) calcium nitrate…

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Q: In 0.45 moles of CaCo3. How many Ca +2 ions are there?

A: moles of CaCO3 is 0.45 mol We have to find Ca +2 ions in CaCO3  1 mol = 6.022 × 1023 ions/ atoms

Q: Calculate the mass in grams of each sample. (a) 5.94 × 1020 H,O2 molecules (b) 2.8 × 1022 SO2,…

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

Q: how many atoms of each element is in the molecule CuSO(subscript4)^+1

A: Atoms in the molecule of CuSO4+1 can be estimated directly as in next step.

Q: Compound Y contains lead and oxygen only. 15.0 g of Y was found to contain 12.99 g lead. Find out…

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Q: Give the formula, name, and molecular mass of the following molecules:

A: a).  Formula-NO Name-Nitric oxide. Molecular mass=(mass of O+mass of N)…

Q: Determine the molecular or formula mass of each of the following compounds. (For this exercise,…

A: When the masses of all the atoms present in a molecule are added, the value obtained is referred to…

Q: (a) The number of atoms in 6.95 moles of potassium.

A:

Q: Name each compound and calculate its formula mass.(a) Al2(SO4)3(b) P2O3(c) HClO(aq)(d) Cr(C2H3O2)3

A: Formula mass is termed as the summation of all atomic weights of the atoms in its empirical formula.…

Q: 1- KF(ag) + H_o()

A: Intrdouction:  We have to balance the given reaction .

Q: What is the mass of the compound C8H18 (Mm = 114.26 g.mol-1) that contains 7.20x1022 hydrogen atoms?

A: Given :- molar mass of C8H18 = 114.26 g.mol-1  Number of H atoms = 7.20 × 1022 atoms   To calculate…

Q: The molecular formula for benzene is C6H6. What is its empirical formula?

A: We have to predict the empirical formula of benzene.

Q: How many atoms of Oxygen (O) are in 3.25 g K2Cr2O7 (MM = 294.19 g/mol)?

A: Molecular weight of one molecule of K2CrO7 = 294.29g One molecule of K2CrO7 contains 7 atoms of…

Q: Explain the difference between the terms molecularmass and formula mass. To what type of…

A: The difference between molecular mass and formula mass has to be explained and the type of compound…

Q: How many atoms in total are there in one molecule of Mg(NO3)2?

A: In a molecular formula, symbols of all the constituting atoms are shown along with their numbers in…

Q: Determine the empirical formula of each of the following compounds. (Type your answer using the…

A: Data given:  (a) Number of moles of chlorine = 0.063 mol Number of moles of oxygen = 0.22 (b) Mass…

Q: 9. Which of the following has the greatest number of particles? (A) 9.012 g of Be (B) 1 mole of Na…

A: The no of moles is the ratio of given mass to that of molar mass of that substance.  For more than…

Q: How many Fe(NO3)3 formula units are there in 351.0 g Fe(NO3)3 ?

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Q: Allyl sulfide (below) gives garlic its characteristic odor. Calculate (a) the mass (g) of 2.63 mol…

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Q: Compute the númber of ions present in 5.85 g of sodium chloride. (Given, NA = 6.022 x 102, atomic…

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Q: How many individual oxygen atoms are there in 0.1488 g of phosphoric acid (H3PO4)?

A: To solve this problem we have to find the mole of phosphoric acid and then we will able to calculate…

Q: How many moles of iodine atoms are there in a sample that consists of 1.35e+23 molecules of…

A: Mole=no of molecule÷6×1023 Mole=1.35×1023÷6×1023 Mole= 0.225 1 mole iodine elememental have 2 mole…

Q: A 3.87g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 5.30x1022 N2O…

A: a) 1 molecule of N2O contains 2 nitrogen atoms, Hence, 5.30 ×1022 N N2O molecules will contain…

Q: A 2.78 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion…

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

Q: A patient is having an allergic reaction and takes a 12.5mg tablet of the over‑the‑counter…

A: The mass of the tablet is = 12.5 mg = 12.5 x 10-3 g The molecular formula of diphenhydramine…

Q: How many molecules are there in 1,975.0 g of table sugar, sucrose, C12H22011?

A: Given,  1975 g of table sugar, C12H22O11

Q: A.)If 4.76  mL of seawater contains about 5.46×10-14  moles of gold, how many atoms of gold are in…

A: Given, A.)If 4.76  mL of seawater contains about 5.46×10-14  moles of gold, number atoms of gold are…

Q: What is the molecular mass in amu of copper(I) sulfate? Use these values from the periodic table…

A: The answer to the following question is given as:

Q: How many molecules of isolentyl acetate (C7H14O2) are there in 5.00 grams?

A: 2.31 x 1022 molecules

Q: compound has the composition of 66.6% Carbon, 11.2% Hydrogen, and 22.2% Oxygen, by mass. If the…

A: Given is, 66.6% Carbon, 11.2% Hydrogen, and 22.2% Oxygen Molar mass= 144.2 g/mol

Q: = carbon atoms or

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Q: How many ions of nitrate (NO3-) are present in 14.33 g of iron (III) nitrate (Fe(NO3)3)?

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Q: What is the total number of oxygen atoms on the left-hand side of this chemical equation?…

A: Since, Balanced reaction means that both side number of atom present in equal number. Thus,

Q: Calculate the molar mass for each of the following compounds: CH₂ g/mol (a) cyclopropane, CH₂ Molar…

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Q: What is the mass of 5.34 x 10^23 molecules of sodium hydrogen carbonate. So far I have Na:22.99 +…

A: Given,the molecules of sodium hydrogen carbonate = 5.34 x 1023 molecules.Atomic mass of Na = 22.99…

Q: How many total ions are there in one formula unit of Al2(CO3)3?

A: Compound is a chemical species which is composed of more than than one elements. For example water…

Q: 4.) How many moles are present in 9.15 x 1021 molecules of CO2? (type the final answer with a…

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Q: Calculate the mass percent composition of each constituent element in the following molecules: (a)…

A: The question is based on the concept of stoichiometric calculations. we have to calculate mass…

Q: 3 Serotonin (C10H12N2O) is a neurotransmitter that when balanced is responsible for happiness,…

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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.