Question 7) A vat holds 25 pounds of ethanol. How many moles of ethanol does the vat contain? Round your answer to the nearest decimal place.

Q: The Alka-Seltzer experiment produced 0.000712 moles of carbon dioxide. What is the mass of NaHCO3…

A:

Q: How many moles are there in a 30.476 g sample of titanium? Your Answer: Answer units

A: Given, Weight of the Titanium sample is = 30.476 g Molecular mass of Titanium is = 47.867 g/mol

Q: Determine the formula weight of NH₄F. Provide an answer to two decimal places.

A: Formula weight can be calculated from the given molecular formula just by adding the atomic mass of…

Q: For every 1 mole of CO, there are g of CO, (rounded to 2 decimal places) Blank 1:

A: It is given that: moles of CO2 = 1 mol It is known that: where n: moles of CO2 (1 mol) m: mass of…

Q: An experiment requires that enough ethanol be used to yield 14.0 g of oxygen. How much ethanol must…

A: Theoretically, two moles of ethanol (C2H5OH) are required to produce one mole of oxygen gas from an…

Q: How many grams are there in a 0.5978 mol sample of carbon? Your Answer: Answer units

A: Given,

Q: How many chlorine atoms are present in 6.62 moles of diatomic chlorinet Cive your answer in…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: Which of the following graphs shows the relationship between the number of moles in the sample,n,and…

A: For the different mass of N2 gas, the temperature and the pressure of the N2 gas is given. To draw…

Q: A chemist weighed out 66.4 g of beryllium. Calculate the number of moles of beryllium she weighed…

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Q: What is the mass of the sample?

A: Formula :-  q = mc∆T  Where : q = heat enery  m = mass of sample  c = specific heat of the sample…

Q: The percent by mass of oxygen in C3HsO is %. (Enter your answer to four significant figures.)

A: Percent mass of an element in a compound can be calculated by using the following formula: Percent…

Q: Which has more mass, a mole of potassium or a mole ofsodium? Explain your answer.

A: The atomic mass of the element is equal to the sum of the number of protons and neutrons present in…

Q: How many moles are in 105 g of K? Use 2 decimal places in your molar mass for the calculation.…

A: Mass of K (potassium) = 105 g  And as molar mass of K (potassium) = 39.09 gmol-1   Use formula for…

Q: Find the percent composition of chlorine in sulfur hexachloride. Round your answer to the hundredths…

A: Sulfur hexachloride has a chemical formula SCl6.

Q: How many moles of fructose are in a sample containing 1.43 x 1024 Molecules of fructose? (Answer…

A: We will solve this problem with the help of Avagadro's number. One mole of a compound contain…

Q: A 28.57 gram sample of X contains how many moles? (Assume that the molar mass of X is 25.77 grams…

A:

Q: Calculate the number of phosphorus atoms in 0.9 g of phosphorus.Answer in units of atoms.

A: Given,Mass of phosphorus = 0.9 gMoles of phosphorus can be calculated as:

Q: Calculate the number of atoms in 940 μg of scandium. Answer in scientific notation.

A: The number of moles for a given compound or a molecule refers to the ratio of its mass to the…

Q: a) How many moles of methanol are present in the sample? b) Calculate the number of methanol…

A: Since you asked multiple questions, so as per Q&A guidelines of portal i solved first three part…

Q: A compound containing copper and chlorine contains 0.01026 moles of copper and 0.01721 moles of…

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Q: How many moles of methanol (CH3OH) are in a 4.375 g sample? Your Answer: Answer units

A: 1- First we calculate the molar mass of Methanol :  Molar mass of C, H and O are 12, 1 and 16gmol-1…

Q: Find

A: Molar mass of NO2 = ( molar atomic mass of N ) + 2 • ( molar atomic mass of O )  Molar mass of NO2 =…

Q: What is the mass of 83.89 moles of X? (Assume that the molar mass of X is 27.78 grams per mole.)…

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Q: Find the mass of 1 molecule of HF  in gram.

A: 1 mole = 6.022×1023 [ Avogadro number ] The mass of 1 mole of molecules of a substance is called its…

Q: Determine the molar mass of Ca(OH).. Provide an answer to two decimal places.

A: General chemistry.

Q: How many oxygen atoms are there in 28.37 moles of carbon dioxide? Avogadro's number 6.022 x 1023…

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Q: Determine the mass, in grams, of 0.452 moles of lithium fluoride.  Record your answer to three…

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Q: Complete the following problems. Show all work. Determine the number of moles in each of the…

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Q: A 78.0-g sample of an unknown compound contains 12.4 g ofhydrogen. What is the percent by mass of…

A: Given: Weight of the compound = 78 g Weight of hydrogen = 12.4 g The calculation of the % by mass is…

Q: Convert to moles and find the total number of atoms.

A: Since you have asked multiparts, we will solve the first eight questions for you. If you want any…

Q: How many molecules of carbon monoxide, CO,  are there in 6.037 moles of carbon monoxide? Enter a…

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Q: What is the percent composition of carbon in methane, CH? Round off your answer to the nearest tenth…

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Q: The chemical formula for diethyl sulfoxide is: (CH,CH,),SO Calculate the molar mass of diethyl…

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Q: What is the percentage of potassium in a 10 g sample of potassium sulfate? Report your answer to the…

A:

Q: Be sure to answer all parts. Calculate the number of atoms in 0.422 g of potassium (K). Enter your…

A: Solution The mole thought may be a convenient methodology of expressing the number of a substance.…

Q: Determine the mass of one mole of sodium chloride.

A: Answer - the basic formula is - In the given question, mole of NaCl given =1. So here, mass = molar…

Q: This is the chemical formula for calcium phosphate: Ca,(PO,); Calculate the mass percent of oxygen…

A: Given :-  Chemical formula of Calcium phosphate = Ca3(PO4)2  To calculate :-  Mss percent of Oxygen…

Q: number of moles of electrons

A:

Q: How many moles of water are in 2.83 g of Kolbeckite,ScPO4⋅2H2O Type in your numerical answer…

A: Given: Mass of ScPO4⋅2H2O = 2.83 g.

Q: How many moles of hydrogen atoms are in a 7.6 g sample of H2 gas? [Express your answer to at least…

A: Mole is defined as unit of amount.It describes number of atoms in a substance.

Q: ny moles

A:

Q: How many grams are in 7.8 mol of H2SO4. Round your answer to two decimal « Previous

A: Given  The molar mass of  H2SO4=98.079 g/mol. The molar mass of Fe          =55.845 g/mol. No. of…

Q: QUESTION 4 How many moles of NH3 are contained in a 30.83L sample at 91.5°C and 6.28atm? Express…

A: Volume of sample = 30.83 L Temperature = 91.5 °C  ....Or  because  °C + 273 = k     .....so, 91.5 °C…

Q: How many moles of hydrogen atoms are in a 5.5 g sample of H2 gas? [Express your answer to at least…

A: The given problem can be solved by using the formula given below as; Moles = Given massMolar mass…

Q: QUESTION 9 How many moles of H20 are in a sample with a mass of 14.9 grams? Report your answer to 3…

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Q: Determine the molar mass of CH;OCH3. Provide an answer to two decimal places.

A: The molar mass of dimethyl ether is 46.06 g/mol.

Q: Calculate the average molar mass of acetic acid based on your experimental results. Round your final…

A: Given: Concentration of acetic acid solution = 2.40 g/L   Trial-1 Trial-2 Initial buret reading…

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.