The percent by mass of chromium(II) in CrO is __________________ %

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Q: . If I wanted to make 100. grams of sodium acetate then how many grams of sodium bicarbonate and…

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Q: How many grams of KCIO, are needed to form 23.1 g of O,? 2 KCIO, (s) → 2 KCI(s) + 30,(g)

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Q: a. How many molecules of carbon dioxide are present in 3.99 moles of this compound? molecules b. How…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Elements 5B and 1H react to make a binary compound BxHy with 22 % by mass of 1H. A) Find the…

A: Given percent by mass of 1H = 22 % => Percent by mass of 5B = 100 - 22 = 78%

Q: Mass percent of an element in a compound represents _________________________. Answers: the…

A: Mass percent of an element in a compound represents _________________________ Answer of the question…

Q: 1. Calculate the percentage of Oxygen content on the following compounds, write the correct formula.…

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Q: [Review Topics] [References] Use the References to access important values if needed for this…

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Q: References] Use the References to access important values if needed for this question a. How many…

A: 1 mol of boron trichloride (BF3) contains 1 boron(B) atom and 3 fluorine(F) atoms.

Q: How many hydrogen ????? are there in 75.9 g of octane, C8H18

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Q: 29. Dinitrogen pentoxide           __________             30. Diphosphorus tetraoxide __________…

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Q: What is the mass percentage of O in C,H,O,? 42.051 % C 8. 9. +/- x 100 3. 2. 4. 7,

A: Given: C3H8O2

Q: 26. Calculate the empirical formula from the information given below: a. 63.5% Fe; 36.5 % S d. 25.9%…

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Q: 2 1 3\ 5. Find the percent compositions of all of the elements in the following compounds: 1) CuBr,…

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Q: Methyl 5.31 98 hydrogen, and 31.6go oxygen. Calcylate the empirical pormi methyl salicylaté.…

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Q: 6. Determine the Percentage composition of all the elements in: MgCr,O,

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Q: 9. A sample of silver ore is tested to be 1.55% Ag. How many grams Ag are in 68Kg of ore?

A: Given that,  Amount of silver ore = 68 Kg Mass percentage of Silver in ore = 1.55%

Q: . A compound with an empirical formula of C20H4 and a molar mass of 88 grams per mole. What is the…

A: 3) Given: Empirical formula = C2OH4  And molar mass = 88 g/mol.

Q: Z4 ORMULA MASS : PARTICIPATION FM? 1 C,H,NO, acetaminophen, a pain-killing drug 2. Cu,…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Example Sample Answers A. Common name or the Chemical name of the compound- EX. WATER ** If there is…

A: 1) Common name or chemical name - sodium bicarbonate 2) IUPAC of compound - sodium hydrogen…

Q: Q11. By analysis, a compound was found to contain 26.58% K and 35.45% Cr by mass; the reminder was…

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Q: Q. Caleulate Moler Mars of Alb(So,). a % compaiken of P in MgalpO) 2

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Q: A chemist weighed out 6.64 g of gold. Calculate the number of moles of gold she weighed out. Round…

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Q: 28. Calculate the molar mass of each of the following compounds. a. NažPO4 c. Cr2(Cr,O7)3 b.…

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Q: Please show all work. 1. Find the mass of 4.52 x 10^23 particles of each of the following: N2…

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Q: 1. How many grams of Co3+ are present in 1.78 grams of cobalt(III) carbonate? grams Co3+. 2. How…

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Q: 1. Which element comprosing Mg(OH)2 has the highest % by mass? 2. Determine the % composition of…

A: Molar mass of Mg(OH)2 = 58.32 g/mol  Atomic mass of Mg = 24.30 g/mol  Atomic mass of O = 16.00 g/mol…

Q: 18.4 molmol HgHg Express your answer using three significant figures.   How many atoms are in each…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".