2 NaN32 Na + 3 N₂ 1) Given 0.38 grams of N₂, how many grams of NaN3 are needed?

Q: C. What is the mass (in grams) of 5.03 × 1022 molecules of CO2 molecules?

A: Number of molecules of any species is given by, => Number of molecules = moles X Avogadro's…

Q: How many moles of oxygen atoms are there in (6.58x10^2) grams of P4O6

A: Molar mass of P4O6= 219.88g/molGiven mass of P4O6 = 6.58×102 gNumber of moles of P4O6= given…

Q: How many H atoms are there in (2.22x10^2) grams of NH3?

A: The answer to the following question is given as:

Q: What is the mass (in grams) of 1.25 x 10^22 molecules of SeO2?

A: 1 mole of any species contains Avogadro's number i.e. 6.023 × 1023 of its constituent particles…

Q: For the compound Ca10(PO4)6(OH)2, what is the molar mass? How many atoms of P are in 35.00 grams of…

A: For molar mass of compound, we should know molar mass of its constituents.

Q: 12) How many grams of hydrogen are in 22.9 g of C6H12O6?

A: Given information,     Mass of glucose is 22.9 g. There are six moles (or 12 atoms) of hydrogen in…

Q: What mass of ammonia gas (NH3) contains 2.8*10^24 hydrogen atoms?

A:

Q: How many grams of manganese(II) hydroxide contain 2.80 grams of Mn2+?

A: The formula for manganese hydroxide is Mn(OH)2  The molar mass of Mn = 54.93g/mol The molar mass of…

Q: 2 Fe203 + 3 C → 4 Fe + 3 CO2 how many moles of Carbon (C) are needed to produce 1.9 moles of Iron…

A: The given equation is as follows 2Fe2O3 +  3C ----------->>> 4Fe + 3CO2  According to…

Q: Determined the mass percentage of hydrogen in CH4 and C4H10?

A: Molar mass is defined as average mass of atoms present in the chemical formula. It is the sum of the…

Q: Suppose the reaction Ca 3(PO 4) 2 + 3H 2SO 4 → 3CaSO 4 + 2H 3PO 4 is carried out starting with 149 g…

A:

Q: What is the mass percentage of O in C3H8O2?

A:

Q: W

A: A mole can be defined as a unit for the amount of substance. Formula for number of moles:

Q: How many grams of Cu2+ are present in 4.99 grams of copper(II) fluoride?

A: Molar mass of copper (II) fluoride =101.543 g/mole

Q: How many H atoms are there in (3.80x10^2) grams of H2O?

A: Number of moles = Mass/Molar mass Number of atoms in 1 mole = 6.0224 x 1023 Molar mass of water =…

Q: A sample of rubbing alcohol solution contains ethanol, C2H5OH(l). If the sample contains 1.25 × 1023…

A: Given;

Q: What mass in grams of Cu(IO3)2 can be produced from 0.750 g of CuSO4 x 5H2O?

A:

Q: 2Na + Cl2 → 2NaCl. If I want to make 100.0 g of salt, how much elemental chlorine would I need?

A: First convert mass into molar mass  Then use mole-mole relationship  After getting mole of  Cl2 then…

Q: If the chemical reaction in question #3 only had a 75% yield, then how many grams of nitrogen gas…

A: Hydrogen gas reacts with nitrogen gas to form ammonia. The equation for the balanced chemical…

Q: What is the mass in grams of 5.0 x 10 6 molecules of formaldehyde, CH2O?

A: Given: Number of molecules of formaldehyde = 5.0x106  Number of moles(n)=(number of…

Q: Suppose 2.43 g of magnesium is reacted with 3.20 g of oxygen: 2Mg + O2 → 2MgO. How many grams of MgO…

A:

Q: What is the mass (in g) of 3.47 moles of Mg(OH)2?

A: Given the moles of Mg(OH)2 = 3.47 mol In order to find mass, we have to calculated the molar mass of…

Q: How many grams of oxygen are in 1.55 g of Ca3(PO4)2?

A:

Q: How many oxygen atoms are there in 1.55 g of Ca;(PO,),?

A: Given, Mass of Ca3(PO4)2 = 1.55 g Number of oxygen atoms are there in 1.55 g of Ca3(PO4)2 =? Note:…

Q: How many grams of oxygen are present in 2,556 g of aspirin, C9H8O4

A: The objective of this question is to find out the amount of oxygen in grams present in a given…

Q: How many moles of hydrogen atoms are there in (5.20x10^2) grams of phosphoric acid

A: Moles of H-atom = ? Phosphoric acid = H3PO4 Mass = 5.20x102 grams Molar mass of H3PO4 = 97.994 g/mol…

Q: How many grams of Cr2+ are present in 4.68 grams of chromium(II) fluoride?

A:

Q: Suppose you got 0.32 g of Fe2O3, what is the mass of Fe^3+from your original sample?

A: Given that,  Mass of Fe2O3 sample = 0.32 g  We need to find the mass of Fe3+ present in the sample…

Q: What

A: Given, The molecules of N2O = 1.37 x 1017 The mass of nitrogen atom has to be calculated.

Q: 2) How many grams of calcium chloride contains 4.08 x1024 ions of Cl?

A: Given that:  Ions of Cl- = 4.08×1024 Formula of calcium chloride = CaCl2

Q: 0.54 mil Al2O3 contains how many grams of oxygen?

A: 2Al2O3 → 4Al + 3O2 in this reaction, 2 moles of Al2O3 contains 4 moles of aluminium and 3 moles of…

Q: How many P atoms are present and what is their combined mass per mole of Ca3(PO4)2? Mass Ca = 120.24…

A: Given: Mass of Ca= 120.24 g Standard data: The molar mass of Ca3(PO4)2 =310.18 g/mol The molar…

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.