What percent is Chromium (Cr) in the compound Cr,0, O 52 % 70 % 20 % 48 %

Q: What is the mass percent of iron in iron(II) phosphide

A: Fe2P Molar mass of Fe2P=142.66gm/mole Atomic mass of Fe = 55.85gm/mole

Q: Complete the ionization reaction of Cr2 (S04)3. • Cr,(S04)3→ Calculate the molar mass of Cr2(S04)3 (…

A: Ionisation Reaction Ionisation or ionisation reaction is a process by which a molecule splits into…

Q: Manganese sulfate forms the hydrate MnSO4⋅?H2O(s)MnSO4⋅nH2O(s) . If this hydrate is heated to a…

A: Given : Mass of MnSO4.nH2O taken = 10.140 g And mass of MnSO4 produced = 9.0592 g The mass of water…

Q: A sample of an iron alloy contains 89.4 g Fe, 2.50 g C, and 1.47 g Cr. Calculate the percent by mass…

A: Given :-  Mass of Fe = 89.4 g  Mass of C = 2.50 g  Mass of Cr = 1.47 g  To calculate :-  Percent by…

Q: What is the empirical formula of a compound composed of O and Mn in equal weight ratio?[Mn = 55]

A: It is the simplest formula for a molecule i.e. Glucose (C6H12O6) has an empirical formula of CH2O.

Q: What is the empirical formula for the following compound C5H702CH3? O CSH,04 O C3H5O O C2H30 O…

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Q: Calculate the mass of copper(II) sulfate pentahydrate (CuSO4•5 H2O, FW = 249.685 g/ mol) needed to…

A: The mass of tetraamminecopper(II) sulfate monohydrate is = 3.00 g The molar mass of…

Q: A certain hexahydrate was heated to evaporate off all the water. The remaining material was found to…

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Q: How many atoms of titanium are there in  0.570 mole of each of the following? ( In Ti atoms)   a.…

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

Q: Dolomite is a carbonate of magnesium and calcium. Analysis shows that 7.81 g of dolomite contains…

A: The given data contains, mass of dolomite = 7.81 g. mass of calcium = 1.70 g

Q: Which titanium-containing mineral, rutile (Ti O 2 ) orilmenite (FeTi O 3 ), has the larger…

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Q: The density of solid Cr is 7.15 g/cm3. How many atoms are present per cubic centemeter of Cr?

A: Mass = Volume x density Number of moles = Mass/molar mass Number of molecules = 6.0224 x 1023 x…

Q: In mass spectrometry, there are patterns in the molecular ion region due to isotopic abundances.…

A: in mass spectroscopy we will see peak due to molecule ions which are formed after molecule undergo…

Q: How many vanadium atoms are contained in 158 kg of vanadium?

A: 1 mole of substance contains 6.022 x 1023 atom.

Q: A compound had the following % composition by mass: C= 25.4%; H=3.2%; Cl=37.5%; 0=33.9% a)…

A: Molecular weight: It is defined as one mole of a substance No of moles= WeightMolecular weight…

Q: 9.) If 438g of Magnesium sulfate react with an excess of sodium chloride, how much magnesium…

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

Q: Madagascar is one of the most important gem-producing countries. three tonnes of Madagascar rock…

A: In order to solve this question, we will be using basic mole concepts. Also, since you have asked…

Q: 2. Calculate the percentage by mass of oxygen in the following compounds a. NO2 b. CH;COOCH3

A: Since you have posted question with multiple subparts as per guidelines we can answer only three per…

Q: * ?Which one of the following is definitely NOT an empirical formula .3 )2 نقطة( C3HO2 O C12H22011 O…

A: Answer

Q: What is the empirical formula of a compound containing 89.14% gold (Au) and 10.80% O? A) Au2O3 B)…

A: Given that: mass % of Au = 89.14 % mass % of O = 10.80 % To find, the empirical formula?

Q: K(s) + + (6)1) (soD + (6)o a How many moles of KCIO, can be made from 89 moles of 0,? b. If you have…

A: The balanced reaction is: 2 K(s) + Cl2 (g) + 3O2 (g) → 2KClO3 (s)

Q: How many C atoms are in 1.00 mole of C12H22O11?

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Q: The molecule TFM is used as a lampricide to control the sea lamprey population in the Great Lakes.…

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Q: Calculate the percent composition of Cr203.

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Q: What is the percentage of metal in the compound Iron (III) Chromate (Fe2(CrO4)3)? А. 24.30% В.…

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Q: Calculate the percent composition by mass of scandium in Sc203-

A: Molar mass of Sc = 44.95 g

Q: Calculate the mass percent of each element in bismuth subsalicylte. It's simplest formula is…

A: The formula of the compound given is C7H5BiO4. Assuming 1 mole of compound. Molar mass of C7H5BiO4 =…

Q: What is the alumina content in weight % of the garnet with Al as the only 3+ cation has Mg2.508…

A: It is given that Al and Mg2.508Fe0.492 are the part of mineral. The oxidation state of Al in the…

Q: 87.2 grams of IrCl3 contains____ moles of the compound. (AW: Ir=192.217; Cl=35.45)

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Q: what is the mass percent of fluorine in C2Cl4F2 9.323% 11.78% 69.58% 18.65% or 5.893%

A: Mass percent is the mass of  total mass of element divided  by total mass of compound.

Q: Calculate the mass percent of H in C,HgO.

A: Since, molar mass of carbon = 12.0107 g/mol Molar mass of hydrogen = 1.0079 g/mol Molar mass of…

Q: Calculate the mass of sodium aurothiomalate (CH.AuNaO4S) that contains 100 g of go

A: we are given 100 gram of gold in C4H4AuNaO4S  we need to find the mass of C4H4AuNaO4S

Q: Calculate the mass percent of H2O2

A: To solve this problem first we calculate the mass of Hydrogen peroxide .then mass Percent is…

Q: Calculate the mass percent of 0 in ClO,F.

A: Given compound is ClO3F  Molar mass of Cl = 35.5 g/mol  Molar mass of O = 16 g/mol  Molar mass of F…

Q: 4. A student had a sample of CaCl2 • nH20. He heated the sample until the mass did not change. From…

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

Q: 9. What is the % composition of sodium in CH,COONA? а. 3% b. 13% C. 29.3% d. 82%

A: PERCENT COMPOSITION: Percent composition is of an element present in a compound is defined as the…

Q: 2. When excess dry chlorine was passed over 1.12g of heated iron, 3.25g of a chloride was obtained.…

A: Here chlorine is present in excess, so iron is the limiting reagent.  Iron will be consumed totally…

Q: Calculate the percent of iron in the compound K4Fe(CN)6.

A: Molar mass of K = 39.0983 g Molar mass of Fe =55.845 g Molar mass of C = 12.012 g Molar mass of N =…

Q: What is the percent of chromium in magnesium di chromate.(MgCr207)

A: The mass percent of chromium in magnesium dichromate can be calculated by using the formula Pecent…

Q: What is the empirical formula for C3H10N4O2 CHNO C4HSN20 O C3H10N402 O CAH10N202 O C2H2N2O2

A: the empirical formula is the formula in which the elements are combined in the simplest whole number…

Q: 4. Cr(NO3)3 is chromic (III) nitride. 5. Ca(NO2)2 is cadmium nitrate.

A: ->Cr(NO3)3  ->Ca(NO2)2

Q: 87.2 grams of IrCl3 contains ____ moles of the compound. (AW: Ir=192.217; Cl=35.45)

A: Moles = weight /Molar mass Weight (given)= 87.2 g  Molar mass of IrCl3 = 192.217 + 3×35.45…

Q: レ31 2- The mass percent of water in a hydrate of MnCl2 is 36.41%. What is the empirical formųla of…

A: Assuming the empirical formula of the hydrate is MnCl2.nH2O and 100 g of the hydrate. where n =…

Q: A sample of Ni(CO)4, a toxic transition-metal complex, has 5.23 x 1024 atoms of carbon. How many…

A: One mole of any substance contains 6.022 ×1023 atoms.  this is called as avogadro's number.

Q: What is the mass percent of calcium in CaCO3? 25.7% 33.3% 60.0% 15.0% 40.0%

A: The compound given is CaCO3. Assuming 1 mole of compound.

Q: Calculate the mass percent of H in C3H120.

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Q: What is the mass percent of oxygen in calcium oxide? 39.7 25.8 28.5 17.0 none of the above

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Q: Question attached

A: The non-metals are the element that has the ability to accept an electron from metals. These are…

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".