How many moles of scandium are in 3.55g scandium?

Q: How many moles of zinc, Zn, are in 1.75×1024 Zn atoms?

A: Avogadro concept: According to this concept, we know that one mole of a substance contains…

Q: How many moles of Ar are in 9.50 x 1023 atoms?

A: Given :-  number of atoms of Ar = 9.50 × 1023 atoms  To calculate :-  number of moles of Ar

Q: A mass of 145 g of a certain element is known to contain approximately 3.64 x1024 atoms. What is the…

A: Let the molecular weight of the element is M gm/mol.  Moles = weight/mol. wt.  Or, moles = 145/M  We…

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: How many moles of oxygen atoms are there in 15. 53 moles of N02?

A: Given -> Moles of NO2 = 15.53 mole

Q: How many grams are in moles of F? Atomic weight of F is=19.00

A: Answer :-  Grams in moles of F = 19.00 g…

Q: How many silicon atoms are there in 1.00g of silicon?

A: Given: Mass of silicon=1.00 g Mass of 1 mole of silicon=28.0855  g

Q: How many moles of Na are there in 1.28 x1025 atoms of Na?

A:

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

A:

Q: What is the mass of 4.34  1027 hydrogen molecules?

A: Given: Number of hydrogen molecules =

Q: How many atoms of vanadium are in 1.28 grams of vanadium ?

A: 1 mole of vanadium contains Avogadro’s number of atoms. The number of mole of 1.28 g of vanadium…

Q: 4. What is the mass of 7.75 moles of magnesium metal?

A:

Q: what is the mass of 4.50 × 1025 O3 molecules?

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: How many atoms are in 2.50 moles of Cl?

A: 1 mol = 6.022 × 1023 atoms

Q: How many atoms are in 3.72 moles of pure aluminum?

A: Given: moles of Al = 3.72 mol

Q: How many moles of Kr are there in a sample of Kr that contains 2.74×1024 atoms?

A: The relationship between the moles and number of atoms of any element is given by  moles = number of…

Q: How many moles of hydrogen are in 1.7 mole(s) of quinine?

A: The molecular formula given is C20H24N2O2  Hence we can say in 1 mole of Quinine we have  20 C atoms…

Q: How many grams can be found in 6.02*10^14 atoms of zinc?

A: Since the moles of Zn = number of atoms / Avogadro's number  Avogadro's number = 6.022 X 1023 hence…

Q: How many moles would there be in 500 atoms of silver?

A:

Q: How many moles of barium are contained in 112.6 g of barium?

A:

Q: How number of F atoms in 2.62 moles of F2?

A:

Q: How many moles of oxygen are in 2.30 moles of NaCIO4 ?

A: Given: moles of NaClO4 = 2.30 moles

Q: How many moles of N are there in a sample of N that contains 2.75×1024 atoms?

A:

Q: How many atoms of copper are there in 0.0075 g of copper?

A:

Q: any atoms of cesium are in 10.1 grams ium phosphate? 1

A: Cesium phosphate Cs3PO4 molar mass = 494 g/mol Moles of Cs3PO4=mass/molar mass    = 10.1/494 =…

Q: 7. How many moles are in 50 grams of Platinum?

A: Ans:7  The number of moles of compound present in a given amount can be calculated by dividing the…

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) 25 grams of PbSO4 is equivalent to how many moles? a) 0.0824 b) 1.21 c) 1.56 d) 1.98

A: Given data: Grams of PbSO4= 25 g. To find: The number of moles of PbSO4.

Q: How many moles of magnesium are present in 3.01 grams of magnesium?

A: Magnesium is an which is having atomic No. 12. It is an important mineral. It has role in enzyme…

Q: If you have a ring that contains 1.94 g of gold, how many moles of gold are in that ring?

A: Number of moles = mass / molar mass

Q: What is the mass of 0.900 mol of BCl3?

A:

Q: how many atoms of Na are in 48g of Na?

A: Molar mass of a compound ican be defined as the mass of compound divided by the amount of that…

Q: 1. What is the mass of 4.16 mol of Cu?

A: Mass of Cu = ?  Moles of Cu = 4.16 moles

Q: How many grams of Copper are in 9.03 x 1023 atoms of Copper (Cu)?

A: we have to calculate mass of copper in                               9.03×1023 atoms of copper…

Q: 8. How many moles of magnesium is 3.01 x 102² atoms of magnesium?

A:

Q: Calculate the number of atoms in a 9.06×103 g sample of strontium.

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

Q: How many moles are in 4.5 x 10^22 atoms of Cu?

A:

Q: 7. How.many moles are in 22 grams of argon?

A: 7. Given that: Ar = 22 g  Molar mass of Ar = 39.95 g/mol

Q: How many moles are in 281.2 grams of titanium?

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: What is the mass of  2.55 moles of water?

A: Given, Moles of water = 2.55 moles Molar mass of water = 18 g/mol

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

A:

Q: How many moles are in 3.0 x 1023 atoms of sulfur?

A: Number of moles =Given number of atomsNA

Q: How many atoms are in 5.80 moles of He?

A: Given : Moles of He = 5.80 mol.

Q: What is the mass of 2.561 mol of gold?

A: A pinch of salt contains as many particle of NaCl that cannot be counted as such. The unit Mole (…

Q: How many atoms of strontium are in 3.33x10-6 moles

A: According to the mole concept, there is 6.022×1023 number of atoms in 1 mole of an element. In this…

Q: How many lithium atoms are present in 49.17 moles of lithium?

A: 1 mole contains 6.022 ×1023 atoms

Q: How many moles of gold are 8.5 x 1024 atoms of gold?

A:

Q: H,O, + HgO → H,0 + 0, + Hg How many atoms of H,O, are in 5.36 x 1022 atoms of HgO?

A:

Q: How many moles of oxygen are in 1.00 moles of magnesium sulfate?  A) 2 B) 4  C) 8  D) 12

A: Formula of Magnesium Sulfate is MgSO4. We have to calculate moles of oxygen present in it.

Q: What is the mass in grams of 9.90x10^23 atoms of silicon

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.