How many moles of tin atoms are in a pure tin cup with a mass of 31.7 g ? Express your answer in moles to three significant figures.

Q: Part B How many grams are in 0.290 mole of Cl2 ? Express your answer to three significant figures.

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

Q: How many grams are in 1.11 molecules of N2?

A: Given:-Number of molecules of N2 = 1.11 molecules  To calculate :- mass (in g)

Q: The molar mass of a compound was determined to be 23.99 g/mol. If the sample contains 3.2 mol, then…

A:

Q: 1.51x1022 atoms of iron, Fe.

A: 1 mol contains atoms or molecules equal to the Avagadro's number.  Avagadro's number = 6.022 × 1023…

Q: A mole of carbon has a mass of 12.01 g. and a mole of aluminum has a mass of 26.98 g. • Define what…

A: The mole is the standard unit of measurement for amount of substances. The mole is essentially a…

Q: A sample of trifluoroacetic acid, C,HF,O2, contains 72.1 g of fluorine. Calculate the mass of the…

A: 1- First calculate the moles of fluorine atoms :  We know that,  moles of F = ( mass / molar atomic…

Q: How many molecules of sulfur trioxide are in 78.0 grams?

A: Given , mass of SO3 = 78.0 g Molar mass of SO3 = 80.06 g/mol

Q: How many moles are in 239 g of iron?

A: Given :- mass of iron = 239 g  To calculate :- number of moles of iron

Q: mass in grams

A:

Q: Calculate the mass percent composition of nitrogen in CO(NH2)2. Express your answer using four…

A: The percent composition of a component present in the mixture is calculated by dividing the mass of…

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

A: We can determine Moles of silicon by using unitary method

Q: This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar):…

A: The chemical formula for acetic acid is CH₃COOH. In each mole of acetic acid, there are;2 Moles of…

Q: How many grams of zinc will contain the same number of atoms as 24.6 g of copper? Express your…

A: Given weight = 24.6 g of copper

Q: How many moles of iron are in (3.7x10^36) atoms of iron (Fe)? For Avogadro's number use:  6.022 x…

A:

Q: Determine the mass in grams of 6.26 × 1021 atoms of arsenjc. (The mass of one mole of arsenic is…

A:

Q: What is the mass of 1.11 x 1021 formula units of KBr?

A: 1 mole = 6.022x 1023 molecules or atoms  mole (n) = Mass / molar mass   Mass = mole x molar mass

Q: Determine the mass (in grams) of 9.44 x 1024 molecules of NO2. Do not submit units in your answer.

A: Atomic weight of N= 14g Atomic weight of two O atoms = 32 Molecular mass of NO2=  46g  One mole of…

Q: 1. How many molecules of oxygen are in 50.0 g of oxygen?

A:

Q: How many carbon atoms are present in 3.95 moles of carbon atoms? Give your answer in scientific…

A:

Q: The chemical formula for diethyl amine is: (CH,CH,), NH Calculate the molar mass of diethyl amine.…

A: mass of C= 12.01 g/mol mass of H= 1.00794 g/mol mass of N= 14.0067 g/mol

Q: Calculate the mass percentage of oxygen in the organic molecule whose line structure is shown below.…

A:

Q: How many total atoms are there in 67.9 g of water (H,O)?

A: Given: Mass of water = 67.9 g Known: Molar mass of water = 18 g/mol

Q: Convert 1.89 × 1024  atoms of carbon to moles of carbon

A: Number of moles = Number of atoms/6.0224 x1023

Q: The black powder used to propel a firework into the sky is made up of 64% by mass potassium nitrate…

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

Q: 1: How many carbon atoms are present in a mole of ¹2C? 12 Express your answer using four significant…

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

Q: How many moles in 1 gram of gold

A: Here, we have to find the number of moles present in 1 gram of gold.

Q: The mass in grams of 10.0 million molecules of sulfur dioxide is:

A: Number of molecules of sulfur dioxide = 10.0 million = 10×106 Moles of sulfur dioxide=Number of…

Q: This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar):…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: The black powder used to propel each firework into the sky made up of 75% by mass potassium nitrate,…

A: Given, 75% by mass potassium nitrate15% by mass charcoal10% by mass sulphur65.0 grams of charcoal

Q: The formula for alum has 1 Al. How many units alum could be made from 7 Al atoms? Answer with a…

A: The molecular formula of alum is K2(SO4)·Al2(SO4)3·24H2O or KAl(SO4)2·12H2O

Q: convert 1.89 • 1024 atoms of carbon to moles of carbon

A: Calculation of moles of Carbon :

Q: How many moles of iron atoms do you have if you have 4.10 x 1023 atoms of iron. (The mass of one…

A:

Q: How many moles are in 33.0 g of Se? How many atoms of N are in 5.6 g of N?

A: Given :-  Mass of Se = 33.0 g  Mass of N = 5.6 g  To calculate :-  i) no. of moles of Se  ii) number…

Q: how many moles of sodium atoms do you have if you have 7.10x10^23 atoms of sodium. (The mass of one…

A: One mole comprises of 6.022×1023 particles.

Q: Calculate the mass of 1.00 × 1024 (a septillion) molecules of water. Express the answer numerically…

A:

Q: How many atoms are in 19.1 g of lithium hypochlorite (LİCIO)?

A: Lithium hypochlorite has a molar mass of 58.4 g/mol This means that 1mol of LiClO has a mass of…

Q: Calculate the amount of anions (in moles) in 24.4 g of calcium iodate. Express your answer with…

A:

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

A:

Q: How many moles of cesium are in 66.45 g Cs?

A:

Q: What is the mass of 22.8 moles of copper atoms? Round your answer to the nearest hundredth. Be sure…

A: Given : Moles of copper = 22.8 mol Atomic mass of Cu = 63.546 g/mol

Q: Part B How many grams are in 0.290 mole of Cl2 ? Express your answer to three significant figures.…

A: Solution:-  Mass of Cl2 is 35.5+35.5=71 gm

Q: Q 7) If the mass of barium sulfate is 0.372 g, find the number of the moles.

A:

Q: How many molecules of C8H18C8H18 would you have if you have 2.51 mol? Report your answer with 3…

A: The molecules of C18H18 when you have 2.51 mol, number of molecules is calculated as given below.

Q: What is the mass in grams of 0.402 mol of magnesium fluoride? Round your answer to the correct…

A: Given: Number of moles of magnesium fluoride (MgF­2) = 0.402 mol Molar mass of MgF­2 = 62.3018 g/mol

Q: How many carbon atoms are present in a mole of 12C? Express your answer using four significant…

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

Q: How many moles are there in 16.64 grams of calcium hydroxide, Ca(OH)2? Round your answer to the…

A: The given mass of calcium hydroxide is 16.64 g The molar mass of calcium hydroxide is 74.093 g/mole

Q: how many moles of calcium atoms do you have if you have 8.83x10^21 atoms of calcium.

A: Given: Number of calcium atoms = 8.83×1021 atoms

Q: How many moles are in 228.6 g of H,O? Round to 2 decimal places.

A: Given data,Mass of H2O=228.6gMolar mass of H2O=18g/mol

Q: Calculate the mass percentage of oxygen in the organic molecule whose line structure is shown below.…

A: The formula of the above mentioned organic molecule is : C18H34O2

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.