Naturally occurring chlorine is 75.78% 35Cl (atomic mass 34.969 amu) and 24.22% 37Cl (atomic mass 36.966 amu).Calculate the atomic weight of chlorine

Q: The combustion of ammonia in the presence of excess oxygen yields NO2 and H2O:…

A: The given reaction is, 4 NH3 (g) + 7 O2 (g)  →   4 NO2 (g)  + 6 H2O (g) The reaction is already…

Q: In 1961, scientists agreed that the atomic mass unit (amu) would be defined as 1/ 12 the mass of an…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: Naturally occurring chlorine is 75.78% 35Cl (atomic mass 34.969 u) and 24.22% 37Cl (atomic mass…

A: Given :  Atomic mass of lighter isotope i.e 35Cl (A1) = 34.969 u  Percentage abundance of lighter…

Q: calculate the masss of carbon in a 1-carat diamond that contains 7.56 x 10^22 atoms of carbon

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Q: What is the molecular (formula) mass (in AMU) of C 4H 80 2? Key Concept: The molecular mass is…

A: Answer is in next step

Q: Chemical analyses conducted by the first Mars Rover robotic vehicle in its 1997 mission collected…

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Q: What are the angles a and b in the actual molecule of which this is a Lewis structure? H H bed C C…

A: The geometry of a molecule is determined by the number of sigma bonds and lone pair of electrons on…

Q: 7- The oxidizing agent in the following chemical reaction is +2 5Fe + MnO (aq) + 8H (aq) - Ma + 4H,0…

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

Q: How many moles are there in 2.75 x 10^24 atoms of copper?

A: we know that one mole of copper contain Avogadro's number of atoms Avogadro's number= 6.023 × 1023

Q: Calculate the mass (in grams) of carbon in 1.88 grams of C2F3Cl3.

A: Mass of C2F3Cl3 = 1.88 g Moles of C2F3Cl3 = 1.88 g / (187.376 g/mol) = 1.0033 × 10-2 mol Since 1…

Q: The mass percent of CO3 in ca(CO3)2 ( atomic mass C= 12, O = 16, Ca = 40) is O 60% O 77.77%) O 50% O…

A: Mass percent can be calculated by the formula given below as; Mass percent=Mass of the…

Q: When iron comes into contact with oxygen in the presence of water, it undergoes a chemical reaction,…

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Q: Calculate the mass, in grams, of 752 atoms of cesium, Cs. (molar mass of Cs is 132.91 g)

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Q: The atomic weight of bromine is 79.904, yet no atom of bromine weighs 79.904 amu. Why is this true?

A: Given : The atomic weight of bromine is 79.904, yet no atom of bromine weighs 79.904 amu.

Q: What is the mass (in kg) of aluminum in 6.75×10^23 molecules of Al(C9H6ON)3? (MM Al = 26.98 g/mol)

A: Number of moles is calculated by dividing the given mass with molecular mass. In the given…

Q: how many atoms of carbon are in a 312.5 mg sample of C^3H^8?

A: Avogadro's number gives the number of atom or particle present in 1 mole of any substance.

Q: How many atoms of sulfur are in 81 g of Na₂S₂O₃ ?  Atomic weights:  Na=22.99, S=32.07, O=15.99.

A:

Q: Calculate the mass of 5.70 X 10^22 tungsten atoms.

A: Given No of atoms of tungsten = 5.70 x 1022   Also, Molar mass of tungsten =  183.84 g

Q: Calculate the mass (in g) of 2.0x10^24 atoms of Pt.

A: Given, number of atoms of Pt = 2.0 x 1024 atomsWe know, => moles of Pt = number of atoms of Pt /…

Q: Iron exists in nature as a mixture of predominantly three isotopes: ⁵⁴₂₆Fe (53.94 amu), ⁵⁶₂₆Fe…

A: We have to calculate the percentage of rarest of three isotopes.

Q: The mass spectrum of an organic compound shows the relative abundances of M to be 87.83% and M+ 1 to…

A: Relative abundance/intensity of M+1 peak = 11.40 % Relative abundance/intensity of M peak = 87.83 %…

Q: Total moles of magnesium

A: We have to find moles of Magnesium

Q: Magnesium exists in nature as three stable isotopes. Suppose you determine that 9.87 moles of…

A: Given - Exact masses of isotopes of Mg 25Mg = 24.9858 amu 24Mg= 23.9850 amu. 26Mg = 25.9826 amu. To…

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 32.1 g of oxygen. Calculate the mass of the…

A: Given,  Mass of O in a sample of C2HF3O2 = 32.1 g Calculate the mass of C2HF3O2 sample = ?

Q: How many atoms of O are found in 1.00 x 10 2 g of K 2Cr 2O 7 ?

A: Number of atoms of Oxygen present in the given compound can be calculated as -

Q: A certain organic compound has the formula C9H11O2.  A sample of this compound weighs 85.88 grams.…

A: The formula of the given organic compound is C9H11O2.  Mass of the compound=85.88 grams. The molar…

Q: The active ingredient in baking soda is NaHCO3. How many grams of NaHCO3 are needed to provide 2.15…

A: The active ingredient in baking soda is NaHCO3.  One atom of NaHCO3. contains = 3 atoms of O. or, 1…

Q: An atom consists of two isotopes, the first with an atomic mass of 15.8967 amu and the second with…

A: Atomic mass of first Isotope = 15.8967 amu Atomic mass of second Isotope = 16.8245 amu Average mass…

Q: How many moles of zinc, Zn, are in 1.35×10^24 Zn atoms?

A: Question is based on mole concept. We have to calculate number of moles of zinc.

Q: Determine the mass (in grams) of xenon that contains: a) 6.96 moles of Xe b) 2.74 × 1024 Xe atoms

A: Since, Moles is the ratio of mass to the molar mass of the atom or molecule. Thus,

Q: What is the mass in kilograms (kg) of 4.29 X 1024 atoms of palladium?

A:

Q: What is the mass of 3.30 x 1023 atoms of silver, Ag? 25.8 g 59.1 g 85.7 g 197 g 0.549 g

A: We will use formula of mole and mass to get answer. Number of atom = 3.3×1023

Q: The element gallium (atomic mass 69.723 amu) has two naturally occurring isotopes, Ga-69 (mass…

A:

Q: Calculate the number of grams of lithium in 5.44 x 1021 atoms of lithium.

A: Given,  Number of atoms of Lithium=5.44×10^21 We know, molar mass of Lithium atom=6.941g/mol Also…

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: 22 Calculate the mass of 3.0 × 1044 atoms of sulfur. O 1.6 g O 16 g O 160 g O 0.16 g

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Q: An unknown compound containing tellurium and bromine is analyzed and it is determined that 28.53% of…

A: According to given data%mass of Tellurium in compound=28.53 %and% mass of Bromine in compound=71.47…

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: how many atoms of carbon are in a 12.5 mg sample of C^3H^8?

A: Given, Mass of C3H8 = 12.5 mg = 0.0125 g Formula used,  moles=given massMolar mass 1 mol = 6.023 x…

Q: Natural rubidium has the average mass of 85.4678 u and is composed of isotopes85Rb (mass = 84.9117…

A: Mass of the Rb = 86.913 amu. Given data: 85.4678 amu is average mass of the Rb Mass of 85Rb =…

Q: Calculate the mass, in grams, of 602 atoms of cesium, Cs (1 mol of Cs has a mass of 132.91 g).

A: Given information: 602 atoms

Q: Oxygen 15.9994

A:

Q: 2. Determine the number of protons contained in particle of protons having a mass of 5.019 x 10*…

A: Interpretation-  To determine the number of proton contained in the particle of proton having mass…

Q: How many atoms of hydrogen are there in 1 kg of methane (CH4)?

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.