Acetaldehyde has the molecular formula C2H4O. Given 55.0 g of Acetaldehyde answer the following question. Find the molar mass of acetaldehyde (C2H4O) and the number of moles in 55.0 g of acetaldehyde (C2H4O)?

Q: Calculate the number of moles in each sample. a. 72.5 g CCI4 c. 25.2 kg C2H2 b. 12.4 g C12H22011 d.…

A: The number of moles of a substance is calculated by dividing the given mass of that substance with…

Q: How many grams of NaCl are present in 8.39x1022 formula units of NaCl? a) 0.139g b) 2.38 x 10-3g…

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Q: What number of atoms of nitrogen are present in 3.54 g of each of the following? a. glycine: C2H5…

A: Given, Calculate the number of atoms of Nitrogen are present in 3.54 grams of each of the following:…

Q: How many MOLECULES of water are present in 9.27 grams of this compound? A 3.10 x 1023 molecules H20…

A: Given that: Mass of water = 9.27 g Molar mass of H2O = 18g/mol Moles of water = 9.27g÷18g/mol =…

Q: 1. How many ATOMS of carbon are present in 6.03 grams of carbon tetrafluoride ? atoms of carbon . 2.…

A: Given, (1) The mass of carbon tetrafluoride = 6.03 grams. (2) Number of molecules of Carbon…

Q: which contains the larger numbers of molecules 25.0 g HCI or 85.0 g C6H12O6

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Q: How many molecules are in one drop of water if 1.00 g of water contains 3.34 × 10 ²² molecules?…

A: 1 gm is equal to 1 mL. Given 1mL=20 drops.

Q: Show all steps in the answers for the following questions and use significant figures in the…

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Q: Ascorbic acid ( vitamin C)  molar mass 176g/mol   A healthy adult's daily requirement is 70-90 mg a…

A: The daily requirement of vitamin C for a healthy adult's  is = 70-90 mg The molar mass of vitamin C…

Q: How many grams are in 8.96x1015 molecules of CO

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Q: How many atoms of oxygen are present in 12.5g of nitrogen dioxide?

A: Given: Mass of nitrogen dioxide (NO2) is 12.5 g. To find: Number of oxygen atoms.

Q: How many grams of Cl are in 555 g CaCl2?

A: Given Mass of CaCl2  =  555 gram  Mass of Cl  = ?

Q: 2. A compound composed of carbon and hydrogen with the formula CxHy was burned. The balanced…

A: • Since, in the given chemical equation we have to calculate the number of carbon and hydrogen in…

Q: Determine which of the following contains the greatest mass of aluminum: 122 g of AlPO4, 266 g of…

A: Molar mass is defined as mass of one mole of a substance. One molecule of AlPO4 contain one atom of…

Q: What is the number of molecules in 319g of Li2SO4? (Take NA = 6 x1023)

A: The question is based on mole concept. We have  to determine number of molecules present in the…

Q: How many molecules are in 52.35 grams of aspartame? C14H 18 ,05 2.89 X 1022 Atoms C subscript 14 H…

A: Option( B) is correct.

Q: How much would 2.4 x 1024 molecules of N2O5 weigh?

A: Moles=2.4*10^24/(6.022*10^23) = 4

Q: B. Calculate the number of moles for each given. 1.) 2.45 x 1023 atoms of Lithium (Li) 2.) 8.30 x…

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Q: How many MOLECULES of water are present in 9.27 grams of this compound? (A) 2.80 x 1032 molecules…

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Q: How many molecules are in the sample? 17 g C6 H12O6

A: No. Of molecules= (given mass/molecular mass) * Avogadro's no. Avogadro's no. is 6.023*1023

Q: 5. Determine the number of moles of the compound and determine the number of moles of each type of…

A: Applying concept of mole calculation.

Q: What is the percent by mass of carbon

A: Percent by mass = (mass of C/total mass of compound) × 100%

Q: Hexane, C6H14, is known to have a density of 0.655 g/mL at room temperature.  How many moles would…

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Q: What is the percent (by mass) of oxygen in citric acid, C6H8O7.

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Q: How many moles of atoms are contained in 12.4 g CH4? Group of answer choices 198 moles 0.773 mole…

A: 1) How many moles of atoms are contained in 12.4 g CH4?

Q: Calculate the mass of carbon dioxide produced from 15.6 g of octane, C8C18, in the 2C8H18(g)…

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Q: Match each of the following with its correct answer The empirical formula of a compound is CH. If…

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Q: Which of the following has the highest number of molecules? 1.0g F2 1.0g O2 1.0g Cl2 1.0g H2

A: One mole of a substance is equal to the mass of carbon-12 which contains 6.023 × 10²³…

Q: Determine the number of moles of the compound and determine the number of moles of each type of atom…

A: a) Since molar mass of KBr = 119 g/mol Hence moles of KBr = mass / molar mass = 2.12 / 119 = 0.0178…

Q: High fructose corn syrup (HFCS) is a sweetener that was designed in the 1970s, which takes corn…

A: Given, Amount of HFCS used = 67.5 g Percentage of fructose molecules =55.1 % Percentage of glucose…

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: How many formula units make up 35.8 gg of magnesium chloride (MgCl2MgCl2

A: The formula of magnesium chloride is MgCl2  hence the molar mass of MgCl2 is  = (24.30 + 2 × 35.45)…

Q: How many moles of C2H4 contains 2.75x1023 atoms of H?

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Q: The number of molecules in 0.556g of PF6 is

A: We have given that Mass of PF6 = 0.556g Molar mass of PF6 = 144.9642 g/mole No. of mole of PF6 =…

Q: How many molecules of hydrogen fluoride (HF) are in (2.1x10^-2) moles of hydrogen fluoride (HF)?…

A: Given  2.1×10-2 moles of HF  N0 = 6.022×1023

Q: Determine the percentage by mass of each element in the following compounds. (Round your answers to…

A: Mass percent of an element:

Q: How many mole of C13H18O2 contain 7.4x10'25 atoms of C

A: The given compound is C13H18O2. The question is 7.4 * 10^25 atoms of Carbon are present in how many…

Q: 5. How many molecules are in 142.69 L of CH4? A V-M. a. 8.59 x1025 molecules b. 6.37 molecules C.…

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

Q: The number of hydrogen atoms in 0.500g of glucose (C6H12O6) is a. 12 b. 1.67x1021 c. 2.78x10-3 d.…

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Q: 1. How many moles are in each of the given samples? a) 2.50 mL of water (assume density of water is…

A: Note : As per our guidelines we are supposed to answer first 3 parts .please resubmit the other…

Q: How many molecules are present in 3.46  10–4 g hydrogen gas? The answer is 1.03 x 10^20 H2 . How to…

A: Given :  Mass of hydrogen (H2) gas = 3.46 x 10-4 g  Also,  Molar mass of H2 gas = 2 g/mol

Q: Part A: How many atoms of hydrogen does it contain?         Express your answer using four…

A: Given: Number of carbon atoms in C6H12O6 = 1.300 × 1021 atoms.

Q: Acetaldehyde has the molecular formula C2H4O. Given 55.0 g of Acetaldehyde answer the following…

A: Given : Mass of C2H4O = 55.0 g Molar mass of C2H4O = Atomic mass of C X 2 + Atomic mass of H X 4 +…

Q: Which of the following contains the greatest number of molecules? A. 1 g of CH3CI В. 1 g of CH,Cl2…

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Q: Calculate the number of grams in each 1.01 x 10 22 molecules of  CCl4.

A: One mole of a species contains avagadro number of atoms,  molecules and ions .

Q: Drag each amount of nitrogen to a box to correctly order the following from smallest to largest…

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Q: Consider 68.9 g of Pb(SO4)2 to answer the following questions. a. How many moles of Pb(SO4)2 is…

A: Given mass of Pb(SO4)2 = 68.9 g

Q: How many grams of CaCl, are in .48 moles? 53 g 230 g 36 g 0043 g

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Q: Which of the following contains the largest number of atoms? Select one: a. 1.0 mol of water (H2O)…

A: The numbers of atoms present in any substance can be calculated by help of Avogadro's Number. One…

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.