Calculate the molar mass of an element which has 12 protons from the following list of elements, their number of protons and neutrons and their   abundance.    a. 22% of the elements isotopes have 12 protons and 11 neutrons

Q: moles of

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Q: A sample of an unknown compound with a mass of 0.847 g has the following composition: 50.51 %…

A: Given, Mass of the compound = 0.847 g Percent mass of fluorine in the compound = 50.51 % Percent…

Q: Counting Atoms Fill in the table Pb C CI Mass (g) 0.543 1.834 Molar Mass g/mol) 0.685 Moles Total…

A: We can solve these questions by knowing some of the basic mole concepts, like conversion of number…

Q: 6. In a chemical formula, how do you calculate the number of atoms of an element within parentheses?…

A: To find: How to calculate the number of atoms in  parentheses? Given suitable examples?

Q: Consider Titanium. It is a metal with the same strength as steel, but it is 45% lighter. It is also…

A: The molar mass of titanium is 47.867g/mol Thus, the mass of 1 mol of titanium is 47.867g

Q: How many moles of calcium atoms do you have if you have 8.13 × 10²¹ atoms of calcium. (The mass of…

A: One mole of any substance contains 6.023×1023 particles. This is called as Avogadro’s number. The…

Q: how many grams of mercury are in 9 moles of mercury ?

A: By using mole concept , number of moles is given as below: number of moles=mass in gMM in…

Q: A given compound always contains the same proportion (by mass) of the elements. This principle…

A: A compound is formed by the combination of two or more elements through chemical bonding.

Q: What is considered to be the molar mass? O the mass, in grams, of one mole of elements of a single…

A: Option 1st will be correct.

Q: A birthday party has many balloons. One of the balloons has 25 grams of helium, while another…

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Q: A pure silver ring contains 4.55×1022 silver atoms. How many moles of silver atoms does it contain

A: A mole of a substance is equal to as many entities (atoms , molecules and ion ) as there are number…

Q: 8. The United States chemical industry produces more sulfuric acid, in terms of mass, than any other…

A: Molar mass of the compound is equal to the sum of the atomic masses of all the elements. Calculate…

Q: How many moles of phosphorus atoms do you have if you have 5.90 × 1022  atoms of phosphorus. ( The…

A: Given: Atoms of phosphorus is 5.90×1022 Mass of one mole of phosphorous is 30.97 g.

Q: Tin has 10 stable isotopes. The heaviest, 124Sn, makes up 5.80% of naturally occurring tin atoms.…

A: a) The number atoms of 124Sn are present in 25.0 g of naturally occurring tin is to be calculated.…

Q: Naturally occurring chlorine consists of 35Cl (mass 34.96885 amu) and 37Cl (mass 36.96590 amu), with…

A: Chlorine has two isotopes, Cl35 and Cl37.

Q: Tin has 10 stableisotopes. The heaviest, 124Sn, makes up 5.80% of naturally occurring tin atoms. How…

A: Given that,  124Sn isotope makes up 5.80% of naturally occuring tin atoms  Mass of tin sample = 57.0…

Q: What would you multiply "moles of gallium" by to get the units "atoms of gallium"? How many MOLES…

A: We know that  1 mol = 6.023 × 1023 atoms 1 mol compound = molecular weight of compound

Q: How many atoms are there in 2 moles of Calcium

A: Number of moles of calcium = 2 moles  Number of atoms of calcium = ?

Q: A student started with a sample of an element X of 10.34 grams. The mass of oxygen is 1.59 g. given…

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

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Q: How many moles of calcium atoms do you have if you have 4.94 × 10²¹ atoms of calcium. (The mass of…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: O3

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Q: What

A: The atomic mass of Al is 26.98, so 1 mol of Al atoms has a mass of 26.98 g.

Q: The Cullinan diamond was the largest natural diamond ever found (January 25, 1905). It weighed 3104…

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Q: How many atoms of He can a balloon that has a 19 cm diameter hold? The density of Helium is 1.18…

A: Given data,Diameter of balloon=19cmRadius of balloon=19cm2=9.5cmDensity of He=1.18g/L

Q: how many atoms are in 5.8 moles of Neon

A: Welcome to bartleby !

Q: The Cullinan diamond was the largest natural diamond ever found (January 25, 1905). It weighed 3104…

A: The number of carbon atoms present in Cullinan diamond weighed 3104 carats is calculated in step…

Q: Popol learns in his biology class that human body is approximately 9.5% carbon. How many moles of…

A: Given 9.5% mass percentage. Using this wa can calculate mass of carbon and then moles.  Further…

Q: How many moles of silver atoms do you have if you have 5.09 × 10²¹ atoms of silver. (The mass of one…

A: Given: Number of Atoms of Silver = 5.09 × 10²¹  To Determine: Moles of silver atoms

Q: How many moles of iron atoms do you have if you have 3.70*10^23 atoms of iron. (The mass of one mole…

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Q: the average mass, in grams, of a single gold atom (mAumAu = 196.97 amuamu )

A: Given: Atomic mass of Au = 196.97 amu = 196.97 g/mol. Assuming 1 mole of Au atoms.

Q: Determine the mass, in grams, of 0.145 moles of Pb (1 mol of Pb has a mass of 207.2 g).Determine the…

A: Given: Moles of Pb = 0.145 mol Molar mass of Pb = 207.2 g/mol Mass of Na = 61.0 g Molar mass of Na =…

Q: Determine the number of atoms in 35.0 grams of nickel, Ni. (The mass of one mole of nickel is 58.69…

A: Given, Mass of Ni = 35.0g

Q: 15 How many atoms of Aluminum are in 6.95 moles of Aluminum?

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Q: A. Calculate the number of moles for B. Calculate the mass of the each given. 1.) 45g of table sugar…

A: Given: Mass of sugar = 45 g Moles of nitrogen gas = 2.7 moles Standard data: The molar mass of…

Q: Fusion is cool, small things come together and make bigger things. For example, if two carbon-12's…

A: Atomic No. of carbon is :- 6 Mass of C-12 carbon is :- 12 Atomic no. Silicone is :- 14 Mass  of…

Q: How many moles of iron atoms do you have if you have if you have 8.00 × 1023 atoms of iron. ( The…

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Q: How do chemists count the number of particles in a substance? O a They use isotopic compositions. O…

A: In international system of Units, seven base units are derived to measure the physical quantities.…

Q: Determine the mass, in grams, of 0.750 moles of S (1 mol of S has a mass of 32.07 g).

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Q: many atoms of helium are in the balloon?

A: It is given that: Density of helium in a balloon = 1.18 g/L Volume = 2.85 L  Density is defined as…

Q: An ambitious student decides to count potassium atoms. He counts 2.01 * 10 to the 23rd power atoms…

A: Using the concept of avogadro number , and no. Of moles we can solve this problem.

Q: How many moles are in 130 gram of N?

A: Given :-  Mass of N = 130 g  Atomic weight of N = 14.01 g.mol-1  To calculate :-  Number of moles of…

Q: Mass of ground pill Volume of KMNO, Moles of KMNO, Moles of Fe2+ Moles of FeSO, • 7H,O Mass of FeSO,…

A: Given: Molarity of KMnO4 = 0.0114809 M Balanced reaction : MnO4− + 5 Fe2+ + 8 H+ → Mn2+ + 5 Fe3+ + 4…

Q: How many moles of calcium atoms do you have if you have 5.86 × 10²¹ atoms of calcium. (The mass of…

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Q: How many copper atoms are in a pure copper statue with a mass of 105kg?

A: The value is given as follows:

Q: One compound of elements X and Y contains 35.2% X (by mass); another compound contains 24.6% X. b)…

A: GIVEN: One compound of elements X and Y contains 35.2% X (by mass) another compound contains 24.6%…

Q: How many atoms are in 2.00 moles of aluminum

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Q: Question attached

A: 1 Mole of Antimony contains number of atoms equal to Avogadro's number, i.e., 6.023*1023.

Q: 4. Calculating Mass of an Element in a Compound. Pitchblende is the most important compound of…

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.