The volume of a sample of copper is 7.14 mL.  The density of copper is 8.9 g/mL. How many moles of copper are in the sample?

Q: What is the number of moles of hydrogen gas in the sample

A: The number of moles of hydrogen gas can be calculated by the ideal gas equation which is given by…

Q: Sea salt is formed by natural evaporation of ocean water and contains 98% sodium chloride. The…

A: Mass of sodium Chloride can be calculated as :

Q: A chemist weighed out 101.g of magnesium. Calculate the number of moles of magnesium she weighed…

A: Mass of magnesium = 101 g  Molar mass of magnesium = 24.3 g/mol

Q: How many moles of KI are in 1.22×10241.22×1024 formula units?

A:

Q: Calculate the mass (in g) of sample. 1 water molecule

A: Given, 1 water molecule

Q: Why is the mole an important unit to chemists?

A:

Q: Mass --> Moles 1. What is the mass of 3 moles of potassium nitrate? 0 75 moles of aluminum oxide?

A: Since you've posted multiple questions, we'll solve only the first question for you. If you want any…

Q: How many particles are contained in 20.0 mole of NaCl? Type in answers without units, using…

A: Given: Moles of NaCl = 20 moles Avogadro's number is a specific numerical value which used to…

Q: Aluminum has the density of 2.70g/cm3 . How many moles are in a 13.2cm3 block of the metal…

A: At the standard temperature and pressure conditions, density of a substance is given by:

Q: Aluminium has a density of 2.70 g/cm3. How many moles of aluminum are in a 13.2 | cm block of the…

A:

Q: What are all the mole formulas such as, mole-mole, mole to liters, moles to grams, mass to mass,…

A: The formula for  mole-mole calculation has to give, A mole fraction indicates the number of chemical…

Q: Explain how you can use the mole number (6.02 x 1023) to count atoms.  Answer in complete sentences.…

A: According to Avogadro's law for mole concept, one mole of any substance contains number of atoms…

Q: Aluminium has a density of 2.70 g/cm. How many moles of aluminum are in a 13.2 cm block of the metal…

A: We have density as 2.7 g/cm3 , we have to calculate the moles of Al in 13.2Cm3 of Al.

Q: ow many moles in 56g carbon dioxide

A: To determine the number of moles in 56g carbon dioxide.

Q: 1. The formula for ibuprofen is C13H1802. How many moles of ibuprofen are present in 250.0-mg…

A: Here, we can answer only the first question which allows us to determine the number of moles of…

Q: Total moles of magnesium

A: We have to find moles of Magnesium

Q: . The formula for ibuprofen is C3H1O2. How many moles of ibuprofen are present in 250.0-mg tablet?

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: A tank contains 325 moles of compressed helium qas. How many Helium atoms are in the tank?

A:

Q: .

A: Molar mass of O2 = 2 • molar atomic mass of Oxygen atom Molar mass of O2 = 2 • 16 = 32gmol-1

Q: What is the mole ratio of all the substances represented in this figure?

A: A mole ratio can be described as ​the ratio between the amounts in moles of the any two compounds…

Q: number of moles

A:

Q: A glucose solution is frequently used as an intravenous (IV) solution to supply hydration and/or…

A:

Q: A compound contains arsenic and oxygen as its only elements. A 1.626g sample of the compound…

A: A 1.626 g of the sample contain 1.060 g of arsenicSo, Oxygen = (1.626 -1.060)g…

Q: Consider 1.00 g of Copper (Cu) metal. How many Cu moles are present in this sample? How many Cu…

A: Since moles of element = mass of element / Atomic mass of element  Atomic mass of Cu = 63.5 g/mol…

Q: How many moles are equal to 2.40 x 1023 formula units of sodium chloride? Round to two decimal…

A: Since, Avogadro number (6.022 × 1023) of formula units are equal to 1 mole of any substance…

Q: For an experiment, a student used 17.50 g sodium chloride.  How many moles of sodium chloride did…

A: Number of moles of any substance can be calculated by using the formula :               number of…

Q: A sample of I2 has a mass of 154g.How mant moles are in the sample of I2

A: Given, mass of I2 = 154 gMoles of I2 can be calculated as:

Q: How many molecules are contained in a glass that holds 250 g of water? How many moles does that…

A: Number of moles is given by the ratio of mass of the substance to that of the molar mass of the…

Q: What is the molar mass of magnesium phosphate? A. 310 grams / mole B.263 grams / mole C.71.3…

A: 1- First we will see the molecular formula :  Magnesium ion  : Mg2+  Phosphate ion : PO43-  Both are…

Q: moles 12.00

A:

Q: Determine the number of moles

A: Number of moles = mass/molar mass  Molar mass of glycine = 75.07 g/mol  Molar mass of…

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: A student calculated the number of moles of carbon dioxide present in a 100.0 g sample of a gaseous…

A: Mass of sample = 100 g Number of mole of carbon dioxide present in sample = 0.30 mol

Q: 1. How many grams of water (H20) are there in 2 mol of water? 1 mol H20 = g (round to hundredth)

A: atomic mass of H = 1 g/mol atomic mass of O = 16 g /mol 1 mol H2O =  2 x1 + 16 = 18  g H2O

Q: How many grams are in 0.00156 molecules of water?

A:

Q: 1.671g anhydrous copper (II) sulfate to moles

A:

Q: Suppose you are performing an experiment in which you produce a solid and measure its mass. You run…

A: Solution:- Given Data => Trial number Mass of product 1 2.59 g 2 2.26 g 3 1.91 g 4…

Q: the moles

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

Q: A 1.30 g sample of titanium chemically combines with chlorine gas to form 5.16 g of titanium…

A:

Q: How to convert ML to moles? I have 10.61 ml of NaOH How do I convert it to moles?

A:

Q: The oxygen gas (O2) in a cylinder has a mass of 360 grams. How many moles of oxygen are present in…

A: The number of moles of solute is defined by the ratio of the mass to the molar mass.

Q: Aluminium has a density of 2.70g/cm(cubed). How many moles of aluminum are in a 13.2cm(cubed) block…

A: Given, Density = 2.70 g/cm3 Volume = 13.2cm3

Q: How many grams of Na are present in a 15 g sample of NaCl?

A: The number of moles for a given chemical species can be defined as the ratio of mass to the molar…

Q: What would you multiply "grams of sodium" by to get the units "moles of sodium"? grams Na x (number)…

A: Element Sodium (Na) The molar mass of sodium Na=23 mole per gram.

Q: Molar mass is the relationship between ____________. A. grams and liters B. moles and grams…

A: Since molar mass is defined as mass of substance in grams in 1 mole of it.

Q: Vitamin C has a formula of C6H8O6, calculate the number of vitamin molecules present in a 0.250g of…

A:

Q: number of moles

A:

Q: How many moles of hydrogen chloride are contained  in a 52,6 g sample of this gas?

A: The moleculer weight of HCl is 36.5 gm/mol That 36.5 gm HCl=1 mol

Q: what mass of ethanol and water would you need to make an 80.0g mixture containing equal number of…

A: Mass=No. of moles×molar mass⊙ molar mass of Ethanol CH3CH2OH=2×atomic⊙ mass of C+6×atomic mass of…

Q: mole ratios

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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.