The element silver (Ag) has two naturally occurring isotopes:109 Ag and 107Ag with a mass of 106.905 u. Silver consists of 51.82%107 Ag and has an average atomic mass of 107.868 u. Calculate the mass of 109 Ag.

Q: A container has 5.80 x 1023 molecules (aka atoms) of bromine gas. Calculate the mass (in g) of…

A: Bromine gas = Br2 Molar mass of Diatomic  Br2 gas = 159.808 g/mol 6.022 x 1023 molecules mass =…

Q: Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 48.0% of the lighter…

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

Q: 1. Which statement best describes molar mass? a. the mass of 6.02 x 1023 atoms, which is constant…

A: The molar mass of a compound is described by the moles concept. According to this concept, one molec…

Q: How many moles of C (to two decimal places) are found in 6.87 x 1024 C atoms?

A: Given,The number of carbon (C) atoms = 6.87 x 1024  C atoms.

Q: Calculate the total number of N atoms in 23.8 g N2O5. O 2.65 x 1023 total N atoms O 9.31 x1023 total…

A:

Q: An unknown compound has the following chemical formula: PtCl, where x stands for a whole number.…

A:

Q: When the supply of oxygen is limited, iron metal reacts with oxygen to produce a mixture of FeO and…

A: Amount of iron = 20.00 g Amount of oxygen gas = 11.83 g Atomic weight of iron = 55.847 g We have…

Q: Diamonds are a crystalline form of pure carbon, and their mass is measured in units of carats (1…

A: Given: Mass of diamond = 84.37 carat And 1 carat = 200 mg = 0.200 g…

Q: A 2.37 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.24 x 1044…

A: Given data,  Mass of nitrous oxide = 2.37 g  Contains 3.24 × 1022 N2O molecules

Q: Determine the moles of barium in each sample. Be sure each of your answer entries has the correct…

A: Part 1) 731. g Ba:To find the number of moles of barium, we'll divide the given mass by the molar…

Q: mass

A:

Q: A sample of NH3 has a mass of 84.06 grams.   Calculate the moles of NH3 in the sample.…

A: Given : Mass of NH3 = 84.06 g

Q: 1. 3.4mol Cu has 2. 7.91x1023K atoms is 3. 42.3g Tin has 4. How many atoms are in 1.54g Zn 5. What…

A: It is based on the concept of mole concept.  Here we are required to find 1)number of atoms present…

Q: you have 1.500 moles of an unknown metallic element. You go to the balance, and find that the mass…

A: Number of Moles of the Unknown Element = 1.500 moles Mass of the Element = 161.80 g   In order to…

Q: A 2.41 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.30 x 102…

A: Given: Number of molecules of N2O =3.30×1022 molecules And mass of N2O sample =2.41 g

Q: Convert 0.834 mol of le ad(M) nitrate, Pb(NO3)4(s), into mass.

A: Given :-  Number of moles of Pb(NO3)4 = 0.834 mol  To convert :-  0.834 mol to grams

Q: 4. A chemist has a sample of propanol, C3H;OH, that contains 9.2 x 1024 molecules. What is the mass…

A:

Q: n element consists of 1.40% of an isotope with mass 203.9730 u, 24.10% of an isotope with mass…

A: Given that, Element consists of 1.40% of an isotope with mass 203.9730 u, 24.10% of an isotope with…

Q: Consider a sample of calcium carbonate, CaCO3 (100.09 g/mol), in the form of a cube measuring 2.88.…

A: The length of the cube of calcium carbonate, CaCO3 =2.88 cm The density of the calcium carbonate,…

Q: cond A B C D sketch of molecules in it H H C1O H-Ö C нӧ- H H :O: H H H-Ö H-Ö C H C || :0: C O: 010…

A: first, we have to find empirical formula of the given compounds

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

A: Since you have posted a question with multiple sub- parts, we will solve first three sub- parts for…

Q: has a molar mass of 99.0 g/mol. Analysis of a sample shows that it contains 24.3% c and rest is…

A:

Q: natural rubidium has the average mass of 85.4678 AMU and is composed of isotopes Rb 85 (mass =…

A: Average atomic mass = ∑i=1XiMiWhere X = mole fraction of the isotope and M is the mass of the…

Q: A 2.25 g sample of titanium metal is burned in an oxygen atmosphere to produce 3.75 g of a titanium…

A: Given that the mass of Titanium is 2.25 g and the mass of oxide is 3.75 g of Titanium oxide. The…

Q: Consider the following reaction:  4 Al + 3 O2 →  2 Al2O3 A mixture of 82.5 g of aluminum and 117 g…

A:

Q: a. A 9.475 gram sample of copper is heated in the presence of excess chlorine. A metal chloride is…

A: Given question related to calculating empirical formula of metal halide formed when metal is heated…

Q: O 4.29 x 10 10 g What is the mass of 4.63 x 1012 atoms of Fe? O 1.08 x 10 10g O 9.76 x 10 10 4.29 x…

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Q: the mass, in grams, of 112 atoms of iron, Fe (1 mol of Fe has a mass of 55.85 g).

A:

Q: A sample of phosphorus weighs 3.8 x 103 ng.  How many phosphorus atoms are present in this sampme?…

A:

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: We have to calculate molar mass of metal and it's identity.

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: Step - 1Formula for the compound = XBr3Means in 1 mol of compound 3 mol of Bromine are…

Q: What is the mass of 7.10 moles of magnesium chloride, MgCl2? Express your answer with the…

A: 1) The compound given is MgCl2 with moles = 7.10 mol Since molar mass of MgCl2 = Atomic mass of Mg +…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".