A student started with a sample of an element X of 10.34 grams. The mass of oxygen is 1.59 g. given the molar max of X is 62.10g/mol and O is 16.00 g/mol, the ratio of the number of moles of X to the number of moles of O is

Q: Given that the molar mass of tartaric acid is 1.50 x 102 g/mol, what is the molecular formula of the…

A: Given that, Molar mass of tartaric acid = 1.50 × 102 g mol-1       = 150 g mol-1 Molecular formula =…

Q: What is the mass, in g, of 15.0 mol of silver?

A: A mole corresponds to the mass of a substance that contains 6.023 x 1023 particles of the substance.…

Q: What is the mass in kilograms of 7.16 mole of Fe?

A: Given data, Moles of Fe = 7.16 moles We know, Moles of a substance is given by the ratio of given…

Q: What is the mass grams that are in 6.70 x 1025 molecules of 1,?

A:

Q: An oxide of nitrogen contains 30.45 mass % N and has a molar mass of 92.02 g/mol. What is the…

A: Given :-  % composition of N in nitrogen oxide = 30.45%  molar mass of compound = 92.02 g/mol  To…

Q: What is the mass, in g, of 1.00 mol of helium atoms?

A: The mass in grams of 1.00 mol of helium atoms has to be given.

Q: If you had 1.08 x 1024 molecules of barium dihydrogen phosphate, how many moles of the substance…

A:

Q: 12. If that hamburger contains 3.1 x 10 moles (or 0.000 000 31 moles) of selenium, how many grams of…

A: Given, Moles of selenium = 3.1 × 10-7 moles Note: Atomic mass of selenium = 78.96 g/mol Mass (in…

Q: How many grams would 71,934,010,495 atoms of a substance weigh if it has a molar mass of 23.7889…

A: Number of atoms = 71,934,010,495 atoms  6.02×1023 atoms = 1 mol 71,934,010,495 atoms =…

Q: Calculate the mass CARBON in 0.0299 moles of C6H12O6.

A: A pure compound is that which contains its constituent atoms in fixed ratio by mass.C6H12O6  is a…

Q: What is the mass, in grams, of one mole of 12C?

A: Molar mass of Carbon-12 is 12.01 g/mol.

Q: What is the mass in grams of 39.30 moles of NaI?

A:

Q: If the same amount of electricity that is used to produce 500 g copper metal (Cu Cu") is used to…

A: Given: Mass of Cu produced = 500 g. The moles of Cu produced = MassAtomic mass = 50063.55 = 7.868…

Q: If 3.77 grams of liquid butane (C4H10) undergo combustion in the presence of an unlimited amount of…

A: We will use mole concept for the given Reaction.

Q: What is the mass, in g, of 1.00 mol of nitrogen atoms?

A: Molar mass of the Nitrogen gas (N2) = 28 g/mol 1 mole = 6.022×1023 moles

Q: If 3.59 grams of liquid butane (C4H10) undergo combustion in the presence of an unlimited amount of…

A:

Q: How many grams of water vapor can be produced if you begin with 65.12 g of C3H8 and 27.34 g of O2?

A:

Q: Suppose 2.367g of TiO2- containing sample evolves 0.143g of O2. What is the mass percent of TiO2 in…

A: The equation involved in the determination of purity of TiO2 sample is as follows.…

Q: What is the mass of 0.00210 moles of K2CO3?

A: Given data: Number of moles of K2CO3 = 0.0021  Formula used: Moles=Given massMolar mass

Q: What is the mass in grams of ^16O with 15.995 u ?

A: Unified mass unit:- Theu unified mass unit (u) is a unit of atomic and molecular masses. It is…

Q: Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 41.0% of the lighter…

A: Average mass of an element is defined as the atomic mass of the element calculated by multiplying…

Q: Calculate the mass, in grams, of 162 atoms of potassium, K (1 mol of K has a mass of 39.10 g).

A: Avogadro number determines the number of atoms in one mole of a substance. Its value is 6.022×1023…

Q: substance with a molar mass of 231.40 g/mol is made up of 72.30% Fe, and 27.70% Oxygen. The…

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Q: What is the mass of 1.213 × 108 mol S?

A: Given :-  Number of moles of S = 1.213 × 108 mol  To calculate :-  Mass of S

Q: Calculate the mass, in grams, of 6.556.55 mol of argon, Ar   mass of Ar:      g   Calculate the…

A: Given, Moles of Ar = 6.55 mol   Mass of Ar can be calculated as :

Q: If 8g of element Q contains 1.204 X 1023 mol-, calculate the relative atomic mass of element Q.…

A:

Q: Experimentally a chemist determined the molecular weight of the compound aniline to be 94.45 a/mol.…

A: A question based on percentage error in the determination of molecular weight, which is to be…

Q: Determine the number of K atom and the mass of K found in 0.200 mol of KOH.

A: Since each molecule of KOH has 1 K atom present in it Hence moles of K = moles of KOH = 0.2 Hence…

Q: If 1.50 moles of nitrogen gas reacts with an excess of hydrogen gas, what mass of ammonia would be…

A: Nitrogen reacts with hydrogen to form ammonia. The equation for the balanced chemical reaction is…

Q: How many lithium atoms are contained in 5.5 moles of lithium? The molar mass of lithium is 6.941…

A: Since number of atoms = moles X Avogadro's number And Avogadro's number = 6.022 X 1023  Moles given…

Q: I have a compound Magnesium Aluminum Chloride. The mole ratio is 1 mol Mg: 1 mol Al: 2 mol Cl. If…

A: Empirical formula :-  The simplest formula which shows only relative number of atoms of different…

Q: Which of the following is necessary to do a complete stoichiometric calculation?  Write the mole…

A: There are four steps to complete stoichiometric calculation: Write the balanced chemical equation.…

Q: Element Molar Mass (/ 14.01 16.00 24.31 32.07 55.85 1. The molar mass of sulfur is 32.07 s/mol. This…

A:

Q: Calculate the mass, in grams, of 642 atoms of cesium, Cs. (molar mass of Cs is 132.91 g)

A: Given: The number of atoms of Cs = 642 atoms The molar mass of Cs = 132.91 g

Q: Explain the difference between atomic mass (amu) and molar mass (g).

A: Atomic mass unit(amu) is the mass unit of an atom.

Q: How many moles of Cs are contained in 595 kg of Cs?

A: Here we have to calculate how many moles of Cs are contained in 595 kg of Cs

Q: 5. a) How many moles is 12.04 x 10 molecules of CaCO,? b) What is the mass of this many moles?

A: Since we know that   1 mole of any substance = 6.022 × 1023 molecules of that substance. And  Number…

Q: Which weighs less, 0.25 mole of xenon atoms or 2.0 moles of carbon atoms?

A: The mass of 0.25 mole of xenon atoms can be calculated as

Q: What is the mass in grams of 5.36 × 10²⁵ molecules of I₂?

A: Given, number of molecules of I2 = 5.36 × 1025 molecules  mass of 5.36 × 1025 molecules of I2 = ?…

Q: What is the mass of 2.00 moles of CS2?

A: Molar mass of CS2  = 76.14 g /mol 1 mol CS2 = 76.14 g

Q: What is the mass in grams of 47.50 moles of NaI?

A: Given that,  Moles of NaI = 47.50 mol Molar mass of NaI  = 149.89 g/mol

Q: How many moles

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Q: the complete decomposition of 1.0 gram of potassium chlorate gives potassium chloride and oxygen…

A: A numerical problem based on mole concept, which is to be accomplished.

Q: A 52-kg woman has 7.2 x 10 mol of hemoglobin (molar mass = 64456 g/mol ) in her blood. How many…

A: We know that 1 mole of any substance contains Avogadro number of molecules i.e 6.022 ×1023…

Q: how many grams of N are needed to combine with O to make 250 g of N2O4?

A: The number of moles of a species is calculated by expression (1), in which, n is the number of…

Q: What is the molar mass of C6H1206? Enter your answer rounded to four sig figs, without units.

A: Introduction: Molar mass: The molar mass of a compound is the mass of a sample in per unit mole. It…

Q: What is the mass, in grams, of (a) 6.33 mol of NaHCO3 and(b) 3.0 * 10-5 mol of sulfuric acid?

A: (a) formula weight of NaHCO3 = 84.0 amu using 1 mol NaHCO3  = 84.0 g NaHCO3

Q: What is the mass in kilograms of 71.6 mol of Fe?

A:

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.