Calculate the mass percent of manganese (Mn) in potassium permanganate (KMnO4).

Q: etermine the number of atoms in 37.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Mass of sodium =37.0g Atomic mass of sodium = 22.99g/mol Moles of sodium = 37.0g/22.99g/mol = 1.61…

Q: If 44.0 g of molten iron(III) oxide reacts with 35.0 g of aluminum, what is the mass of iron…

A: Iron(III) oxide reacts with aluminium to form iron and aluminium(III) oxide. The equation for the…

Q: What is the mass percent of bromine in lithium bromide?? 1.47.6% 2.52.4% 3.92.01% 4.7.99%…

A: Answer: option 3) 92.01 % is the mass percent of bromine in lithium bromide.

Q: Calculate the mass percent of Cu in CuCl2. (Mass of Cu= 63.55 g and Cl= 35.5 g) ii) Calculate the…

A: Mass percent is the percent ratio of mass of element in the compound to the total mass of the…

Q: The percentage by mass of nitrogen is 46.7% for a species containing only nitrogen and oxygen.…

A:

Q: Balance the following equation by filling the gaps with appropriate numbers. Na + NANO3 Na20 N2

A: Given here an unbalanced chemical reaction and we are asked to balance the reaction.

Q: The reaction of sulfur powder (S8) with oxygen gas (O2) results in the formation of one of many new…

A: We know that, molar mass of O = 15.999 g/mol molae mass of S = 32.065 g/mol

Q: 148 gimol 3.82 x 103 73.9 g/mol 80 g/mol * 00 00 O000

A:

Q: Determine the molecular formula if the molar mass of the compound is 957.86 g/mol.

A:

Q: Calculate the mass % composition of Lithium in Li3PO4.

A: The mass percent of Li in Li3PO4 is calculated below.

Q: The mass ratio of sodium to fluorine in sodium fluoride ls 1.21:1. A sample of sodium fluoride…

A:

Q: Calculate the grams of nitrogen in 23.4 g of Ca(NO3)2.  2. Calculate the mass percent of chlorine…

A: The given data : 1.The mass of the Ca(NO3)2 = 23.4 g To determine = The mass of nitrogen 2.…

Q: Br 1) Mg(metal) 2) H,0 OH MgBr

A:

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: The mass of 5.20 moles of glucose, C6H12O6 is   1.56 × 10‑21 g   31.2 g…

A: Given, Moles of glucose (C6H12O6) = 5.20 mol Mass of glucose (C6H12O6) = ? Note; Molar mass of…

Q: Calculate the mass percent composition of lithium in Li3PO4. O 30.72% O 17.98% 26.75% 20.82% 55.27%

A: Mass % of Li in Li3PO4 ?

Q: a)Using the data provided, determine the mass percent of water and the mass percent of anhydrous…

A: Given, mass of hydrated copper (II) sulfate: 131.4g mass of anhydrous copper (II) sulfate: 130.26g…

Q: What is the mass percent of silicon dioxide (SiO2) if you are able to separate 2.202g out of a…

A: The mass percentage of a compound in a mixture is equal to the ratio of the mass of that compound…

Q: A mixture consisting only of lithium chloride, LiCl, lithium carbonate, Li2CO3, and lithium nitrate,…

A: Introduction to Elemental Analysis In the process of elemental analysis, a sample of a substance…

Q: In hydrogen oxide (H20), the exact value of the % composition of the Hydrogen (H) is ________.…

A: Mass % of an element:

Q: What is the mass percent composition of S in Al,(50,,? 21.38 % O9.372 % 42.73 % )35.97 % 28.12 %

A: The compound give is Al2(SO4)3. Assuming 1 mole of the compound. Molar mass of Al2(SO4)3 = Atomic…

Q: White phosphorus consists of a molecule made up of four phosphorus atoms. It burns in pure oxygen to…

A: The given balanced chemical equation                                               P4…

Q: 15. An oxide of lead contains 90.65% Pb, by weight. The empirical formula is: * Pb02 O Pb304 Pbo Pb…

A: Pb, atomic mass = 207 g/mol Percentage = 90.65 Relative number of moles = 90.65/207 =  0.437 O2,…

Q: A mixture contains 78% apatite (Ca3(PO4)2 . CaF2). The rest of the mixture does not contain…

A: Given: Mass percent of Ca3(PO4)2.CaF2 = 78% And there is no P in the mixture apart from that in the…

Q: 2) sodium bicarbonate (s) → sodium oxide (s) + carbon dioxide (g) +

A: We have to tell which product is formed from thermal decomposition of sodium bicarbonate

Q: What is the mass of oxygen atoms in 0.305 moles of Fe(CO)5 ?

A: 1 mol Fe(CO)5 contains 5 moles of oxygen atom. Mass of oxygen = number of moles of oxygen × molar…

Q: A sample containing NaCl, Na,SO, and NaNO, gives the following elemental analysis: Na: 33.807…

A:

Q: 17. A 5.0 g sample of calcium nitrate (Ca(NO3)2, M=164) contaminated with silica (SiO2, M=60.1) is…

A:

Q: Ca₃(PO₄)₂(s) + H₂SO₄(aq) → CaSO₄(s) + H₃PO₄(aq) calculate the mass in grams of Ca₃(PO₄)₂ that will…

A:

Q: How many grams of magnesium are required to produce 3.000 kg of Si? (At mass: Mg=24.31; Si=28.09)…

A:

Q: Complete the table, and then analyze the data to determine if Compounds Iand II are the same…

A: The concentration of a substance can be measured in terms of mass by mass percentage. This…

Q: Which element comprising Mg(OH)2 has the highest percentage by mass? RSK. Oxygen KRS. Hydrogen RKS.…

A: % w/w for an element in a compound = (mass of element/total mass of compound) × 100%

Q: Calculate the mass of 1.92 x 1018 atoms of Mg. O 1.08 x 10 10g O 2.73 x 10 10 g O 7.75 x 105g O 1.62…

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Q: Pill 1 Pill 2 Mass percent of FESO4 7 H,O (%) Average mass percent of FESO, 7 H2O (%) 6. unrounded…

A: Mass percent of a substance can be calculated as follows; Mass percent=Mass of substanceTotal…

Q: Determine the empirical formula of the compound according to its elemental analysis:  38.13% C by…

A: Determination of empirical formula The percentage composition of elements present in given compound…

Q: A 1.58 mole sample of a pure unknown substance has a density of 1.87 g/cm3. If the sample occupies a…

A: Given,Density = 1.87 g/cm3Volume = 188 cm3Mole = 1.58 mole

Q: A sample containing NaCl, Na,SO, and NaNO, gives the following elemental analysis: Na: 32.08…

A:

Q: Calculate the mass percent composition of nitrogen in each following nitrogen compounds B. BN C. NO2…

A: The mass percent of N = (Total Molar Mass of N in the compound / Molar Mass of compound) * 100%

Q: A block of gold (Au) has the dimensions (I × b x h) = 0.7600 in x 8.558 mm x 1.816 cm. 1 in = 2.54…

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Q: Calculate the mass (in kg) of 4.87 x 1025 atoms of Zn. O 8.09 kg 1.24 kg 5.29 kg 1.89 kg O 1.09 kg

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Q: Portland cement contains some Fe2O3. Calculate the mass percent composition of iron in this…

A: Weight percent: The mass of one component divided by the total mass of the mixture, multiplied by…

Q: Calculate the percent by mass of each element in the following compounds: Calculate the mass percent…

A:

Q: Show your work and report your results with the corre figures. 8008. 1. Calculate the mass percent…

A: Mass percent of Ca=(mass of Ca/ total mass) x 100. Molar mass of CaSO4=1x atomic mass of calcium +…

Q: For each group of three samples, determine the sample with the largest mass. 13.7 mol of strontium…

A: Given samples: 13.7 mol of strontium iodate, Sr(IO3)2 (s) 15.9 mol of gold (III) chloride, AuCl3…

Q: 3. Determine mass percent of nitrogen and iron in Fe(NO3)3.

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Q: Consider 11.5 g Na2SO4. a. Determine the number of moles of Na2SO4. b. Determine the number of Na +…

A: A numerical problem based on mole concept, which is to be accomplished.

Q: 9. What is the mass of one-half mole of SO2? а. 8 g с. 24 g b. 12 g d. 32 g 10. How many grams are…

A: We know ; Mole of compound =  Mass of compound/ Molar mass of compound     1 mole of substance has…

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: Find the mass of 2.45 X 1023 molecules of Ca(OH)2? Use: Ca = 42.0g, H = 1.25g and O = 15.7g as…

A:

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.