How many oxygen atoms are in 1.70 g of quartz?

Q: How many atoms are in 145 g of calcium?

A: Given: Mass of Calcium = 145 g To Calculate: Number of atoms in 145g of Ca

Q: A 2.00 g sample of an organic compound contains 0.675 g of carbon. How much carbon would a 4.00 g…

A: ◼️ Given that:  2.00 g of organic sample has 0.675 g Carbon  Carbon in 4.00 g of same organic…

Q: How many fluorine atoms are present in 5.85 g of CF4?

A: Given, Mass of C2F4 = 5.85g

Q: How many molecules are in 502.1 g of NaCl?

A:

Q: How many oxygen atoms are contained in a 5.525 g sample of calcium phosphate?

A: First of all, we will calculate the no. of moles of calcium phosphate in 5.525 g of sample and then…

Q: How many atoms are in 76.9 g of lithium hypochlorite (LiClO)?

A: Answer:In the 1 mole sample of a substance number of particles are always equal to Avogadro number…

Q: A new computer chip contains 4.71×1022 Si atoms. Determine the mass (in grams) of the silicon…

A: 1 mole of any substance contains avagadro number of atoms i.e.6.022×1023 atoms.  6.022×1023 atoms of…

Q: How many grams of O are in 805 g of Li2O?

A: The mass of Li2O is = 805 g The mass of oxygen is =?

Q: Mass of BaCl2•nH2O (g)

A: In gaseous state the BaCl2•2H2O exists with structure

Q: How many moles of arsenic are there in 6.50 g of arsenic?

A:

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: A sample of a compound is found to contain 21.82 g of carbon, 9.16 g of hydrogen, 20.42 g of oxygen,…

A: Mass of compound is,

Q: How much calcium is contained in 25.0 g of calcium fluoride?

A: We have to calculate the amount of Calcium in given mass of CaF2 .

Q: How many atoms of hydrogen are in 230  g of hydrogen peroxide ( H2O2)?

A:

Q: What is the total mass of oxygen contained in 5.2 g of benzoic acid (C6H5COOH)?

A: This is mole concept reactions

Q: How many molecules are in 16.1 g of C8H10?

A: Mass of C8H10 = 16.1 g

Q: A mixture of 50.0 g of S and 1.00x10^2 g of Cl2 reacts completely to form S2Cl2 and SCl2. What mass…

A: When S react with Cl2, it will form S2Cl2 and SCl2 so first write reactant and product then balanced…

Q: How many oxygen atoms are in 2.40 g of quartz?

A: quartz :  molecular formula = SiO2 molecular mass = 28 + (2 x 16) g/mol                            =…

Q: How many moles of potassium nitrate are there in 50.0 g of potassium nitrate?

A: Given data contains, Mass of potassium nitrate is 50.0 g. The formula to calculate the moles of a…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.