QUESTION 1 Calculate the molar mass of carbonic acid (H2CO3). There may be slight differences depending on your version of the periodic table, however one answer should be extremely close to yours.

Q: Question 8: For sugar (C12H22011), what is the percentage of carbon, hydrogen and oxygen in the…

A: 8.  molecular formula of sugar = C12H22O11 Number of oxygen atoms in Sugar = 11 Number of carbon…

Q: When 1.449 grams of a hydrocarbon, C,Hy, were burned in a combustion analysis apparatus, 4.441 grams…

A: The empirical formula represents the smallest number of each element in a compound, which is…

Q: rgahic compound has a gram molecular weight of 372 g/mol, and its composition is 38.6% carbon, 9.76%…

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Q: When I calculate 9.89g of caffeine (C8H10N4O2) into number of atoms I divide the mass by atomic mass…

A: Your calculations are on the right track, but it's important to understand the concept of the mole…

Q: When 1.615 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 5.545 grams…

A: The molecular formula is a formula generated from molecules that represents the total number of…

Q: How many molecules of hydrogen chloride (HCI) are there in 25.0 g of hydrogen chloride? (Given: H=…

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Q: molecular weight

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Q: An unknown compound contains only carbon, hydrogen, and oxygen. Using combustion analysis, you…

A: Here we are required to find the empirical formula of the compound.

Q: A compound isolated from the rind of lemons is found to be 88.14% carbon and 11.86% hydrogen by…

A: As this question has multiple questions, we are solving first three for you. If you want remaining…

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: Formula of the compound = XBr3 4.737 g sample of this compound contains 5.329×10−2 mol Br

Q: How many molecules are in 4.83×1020 H2O2?   I don't quite understand how to do these calculations. I…

A: Note: Hey there! Thank you for posting the question. Since the unit is not given, we have taken…

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3 (Si₂05), (OH)2 An…

A: 1 mole of A2B2 contains 2 mole A and 2 mole B

Q: Determine the number of molecules of ethanol( C 2 H 5 OH) in 47.0 g.

A: In the International System of Units, the mole (symbol: mol) is the unit of measurement for the…

Q: Para-cresol, a substance used as a disinfectant and in the manufacture of several herbicides, is a…

A: Para cresol is used to disinfectant  severel Herbicide. It is made with C,H,O.

Q: When 4.993 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 15.67 grams…

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Q: Convert 1.59 x 1022 molecules/formula units of X5Z4 into grams of the same compound. (Assume that…

A: The given data contains, mass of X5Z4=1.59×1022molecules/formula molar mass =(5×54.94 g/mol)+(4×8.72…

Q: The formula of acetic acid is CH3COOH (alternatively written as C₂H4O₂). What is the molar mass of…

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Q: Convert 2,58 x 10 22 grams of X4Z2 into molecules/formula units of the same compound. (Assume that…

A: Answer :- Here I have explained the complete solution . Hope this will really help !!!!!!!!!!!!   So…

Q: . He can tell from elemental analysis that the polymer is made up of only three elements: carbon,…

A: To solve this we have to consider the mass of polymer = 100.0g  Then  Mass of C = 56.45 g  Mass of H…

Q: A typical deposit of cholesterol, C27H46O, in artery  is detected to have a mass of 3.9 mg. How many…

A: Given: Mass of C27H46O = 3.9 mg = 0.0039 g                                   (Since 1 g = 1000 mg)

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: Tartaric acid is the white, powdery substance that coats tart candies such as Sour Patch Kids.…

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Q: Which contains the greatest number of moles of oxygen atoms: 1 mol of ethanol (C2H5OH), 1 mol of…

A: Given : Moles of ethanol i.e C2H5OH = 1 mol. Moles of formic acid i.e HCO2H = 1 mol. And moles of…

Q: Convert 9.83 x 1022 grams of X4Z4 into molecules/formula units of the same compound. (Assume that…

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Q: Menthol is a flavoring agent extracted from peppermint oil. It contains C, H, and O. In one…

A: The combustion of menthol is given by

Q: When 4.876 grams of a hydrocarbon, C,H,, were burned in a combustion analysis apparatus, 15.30 grams…

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Q: Vitamin B12, cyanocobalamin, is essential for human nutrition. Its molecular formula is…

A: Cyanocobalamin is vitamin B12 with molar mass of 1355.38 g/mol

Q: The composition of a compound was found to be 66.7% C, 25.9% N and 7.41% H by mass? What is the…

A: Empirical formula represnts number of atoms of various elements present in a molecule in simple…

Q: Vitamin B12 , cyanocobalamin, is essential for human nutrition. It is concentrated in animal tissue…

A: The molar mass of cyanocobalamin is calculated using cobalt’s molar mass in step two.

Q: Consider a sample of carbon tetrafluoride that contains 1.59 × 1024 atoms of fluorine. Using the…

A: Recall the data from the question, Atoms of fluorine in carbon tetrafluoride=1.59*1024 atoms moles…

Q: Imagine that all our balances displayed mass in units of slugs instead of grams. Would we still…

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Q: Click in the answer box to activate the palette. Menthol is a flavoring agent extracted from…

A: Atomic mass of carbon (C) = 12.01 g/mol Atomic mass of hydrogen (H) = 1.008 g/mol Atomic mass of…

Q: Convert 1.43 x 10^23 molecules/formula units of X5Z3 into grams of the same compound. (Assume that…

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Q: Consider a sample of carbon tetrafluoride that contains 1.05 × 10²⁴ atoms of fluorine. Using the…

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Q: Enter the elements in the order presented in the question. empirical formula = molecular formula =

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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.