For 1.88 g of a compound containing only copper and oxygen, CuxOy, a student found that it contained 1.371 g Cu. How many moles of Cu are there in the sample?

Q: Sorbose, C6H12O6, is used in making vitamin C. A sorbose sample contains 36.0 g of carbon atoms.…

A: Mass of carbon =36 g  Moles of carbon in sorbose=36 g ×1 mol12.01 g=2.9975 mol Moles of H atom can…

Q: How many grams of C are present in 4.19 grams of carbon tetrafluoride?   How many grams of carbon…

A: Given   (i)   Mass of CF4  = 4.19 gram       Mass of carbon = ? (ii)  Mass of F = 4.61 gram…

Q: How many atoms of C are in a sample 1.0 mol sample of C7H16C7H16? 9.73⋅10249.73⋅1024…

A: We have asked for the number of carbon atoms in 1 mole of C7H16

Q: a. How many moles of disulfur decafluoride, S₂F10, are present in 2.98 grams of this compound? moles…

A:

Q: moles of atoms are in each elemental sample?

A: 1) Using the molar equation- n: number of moles of the elemental sample. m: given mass of the…

Q: A 2.19 g sample of a compound consisting of carbon, hydrogen, oxygen, nitrogen, and sulfur was…

A: The mass of compound containing Carbon, hydrogen, oxygen, nitrogen and sulfur combusted in excess…

Q: a. How many moles of sulfur hexafluoride, SF6, are present in 1.87 grams of this compound? moles b.…

A: • Thus, 0.0128 moles of sulfur hexafluoride are present in 1.87 grams of this compound in correct…

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 grams of magnesium, Mg, would contain the same number of atoms as 58.69358.693 g of nickel,…

A: Given: 58.69 g of Nickel

Q: atoms

A:

Q: What is the mass of 4.27 moles of lithium nitrate?

A: Mass = Number of moles x Molar mass Molecular formula: Ti(NO3)4 Molar mass of Ti(NO3)4 = 295.89…

Q: 1.aDo a mole of Na and a mole of NaCl contain the same number of Na atoms ? Explain your answer .…

A: Same moles of any particle will have same number of that particles .

Q: How many grams of Al are in 7.23 x 10²* Al atoms? Enter your answer to the ones place,

A: Convert the number of atoms into moles by using Avogadro Number and then determine the mass in grams…

Q: A sample of trifluoroacetic acid, C,HF,O2, contains 62.1 g of oxygen. Calculate the mass of the…

A: The mass of oxygen in the trifluoroacetic acid, C2HF3O2 is = 62.1 g The mass of the trifluoroacetic…

Q: For 1.817 g of a compound containing only copper and oxygen, CuxOy, a student found that it…

A:

Q: An experiment requires that enough XeOF4 be used to yield 19.2 g of fluorine. How much XeOF4 must…

A:

Q: How many grams of Ar are there in 4.28 moles of Ar? How many grams of Xe are there in a sample of…

A: (1) Atomic mass of argon gas is = 39.948 u While given moles of argon = 4.28 moles Then, by…

Q: How many atoms of carbon are combined with 6.89 moles of hydrogen atoms in a sample of the compound…

A: In ethane C2H6 , 2 moles of carbon are combined with 6 moles of hydrogen.

Q: A sample of Al weighs 52.0 grams. Will a sample of Hg that contains the same number of atoms weigh…

A:

Q: For 2.526 g of a compound containing only copper and oxygen, CuxOy, a student found that it…

A: From the mass of compound and mass of Cu ,we can determine the mass of oxygen. Then using molar mass…

Q: A 3.87g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 5.30x1022 N2O…

A: a) 1 molecule of N2O contains 2 nitrogen atoms, Hence, 5.30 ×1022 N N2O molecules will contain…

Q: How many N atoms in a sample of C7H5(NO2)3 that has the same number of O atoms as 13.0 g C6H12O6?

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: How many moles of calcium atoms do you have if you have 5.60 × 10²¹ atoms of calcium. (The mass of…

A: The question is based on mole concept. We have to calculate moles of calcium.

Q: Consider Cl2+F2=CLF3 (ΔH°f = -164.65 kJ/mol) . 1. If 42 g of F2 is combined with 142 g of Cl2, how…

A: Balanced chemical equation: Cl2  +   3F2  ------>   2ClF3 Number of moles = Mass/molar mass

Q: How many grams of sulfur tetrafluoride contain 2.82 grams of F ?

A: The mass of one mole of molecules of a substance is known as its molar mass The number of moles of a…

Q: 9. Using the following reaction 2NaBr +CaF, →2NAF+ CaBr2 If 6 moles of CaF2 were added, what mass of…

A: Given  moles of CaF2 = 6 moles Molar mass of  CaBr2 = 199.9 gm/mole Mass of CaBr2= ?

Q: sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g. a. Record each step needed to calculate the…

A: We have given that  A sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g  calculate the moles and…

Q: How many atoms are present in a Mg sample with a mass of 14.6 grams?

A:

Q: A 0.652 g sample of a compound is found to contain 0.579 g of Cu and 0.0730 g of O. Which of the…

A:

Q: How many atoms of carbon are combined with 7.31 moles of hydrogen atoms in a sample of the compound…

A: Given : number of moles of hydrogen atoms in a sample of heptane = 7.31 mol  To calculate : number…

Q: 83. Many famous “rubies” are in fact spinels, which look like rubies but are far less valuable.…

A: Few questions based on mole concept, which are to be accomplished.

Q: A student weighs a sample of carbon on a balance that is accurate to 0.001 g. (a) How many atoms…

A: The mass of carbon (C) is 0.001 g and the molar mass is 12.01 g. The no of moles of C are:  n = 0.01…

Q: How many moles of calcium atoms do you have if you have 5.65 × 10²¹ atoms of calcium. (The mass of…

A: Mol defination:  Mole in terms of particles:  1 mol = Avogadro no.of particles            = 6.02 ×…

Q: How many grams of S are present in 4.22 grams of sulfur hexafluroride?  how many grams of sulfur…

A: Given,  Mass of SF6 : 4.22 g Molar mass of SF6 = 142 g/mol

Q: You have a 20.0 g sample of silver metal. You are given 10.0 g of another metal and told that this…

A: The situation is possible or not has to be determined.

Q: What mass of cerussite (PbCO3), would contain 35.0 grams of lead?

A:

Q: 4. How many grams would 2.5 moles of magnesium (Mg) weigh? 5. How many grams would 10.0 moles of…

A: 4) Given : Moles of Mg = 2.5 mol Since atomic mass of Mg = 24.3 g/mol Hence mass of Mg = moles X…

Q: For 2.577 g of a compound containing only copper and oxygen, Cu,O, a student found that it contained…

A: Answer = 0.07781 mole

Q: For 2.634 g of a compound containing only copper and oxygen, CuxOy, a student found that it…

A: We have to calculate the moles of oxygen.

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

A:

Q: How many grams of Cl are there in a sample of Cl that contains the same number of moles as a 108…

A: Molar mass of Sulfur = 32.065 g/mole Molar mass of Cl = 35.45 g/mole

Q: Consider a 3.55 g sample of C4H10. How many atoms of C would be in this sample?

A: Molar mass of C4H10  = 58 g/ mol Fraction of  C = 48/58 = 0.8276

Q: A sample of methane (CH4) has a mass of 71.6g.  How many moles does that equal to?

A: Mass of Carbon =12g Mass of Hydrogen = 1g Molecular mass of methane = 16g 16g of methane  = 1 molr…

Q: etermine the mass, in grams, of 0.520 moles of Si (1 mol of Si has a mass of 28.09 g).

A: The chemical changes observed in any reaction involve the rearrangement of billions of atoms. It is…

Q: How many atoms are present in a Mg sample with a mass of 10.6 grams?

A: Given, mass of Mg sample = 10.6 g Number of atoms present in 10.6 g of Mg sample = ? Note: molar…

Q: Which has the largest number of molecules for 1 mole of H2, 1 mole of O2, and 1 mole of F2? H2 OF2 O…

A: According to the definition one-mole substance contains 6.023 x 1023 molecules.

Q: How many moles of sodium atoms do you have if you have 5.60 × 10²³ atoms of sodium. (The mass of one…

A: Given →5.60*1023 atoms of sodium→mass of one mole of sodium=22.99 gone mole sodium atoms mean…

Q: sample of propane, C3H8 C 3 H 8 , contains 11.5 moles m o l e s of carbon atoms. How many total…

A: C3 H8 contains 3 carbon and 8 hydrogen . So 1 mole contain 11 mole of atom.

Q: how many moles of fluorine are present?

A: 1 mol = 6.022 × 1023 atoms  Number of moles = mass/molar mass  Mass = number of moles × molar mass…

Q: How many grams of Sr are there in a sample of Sr that contains the same number of moles as a 62.4…

A: The ratio of the grams of the substance to the molar mass gives the number of moles. Mathematically,…

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.