1. Answer the following: a. The coefficients in front of the substances in a chemical reaction indicate the number of each type of __________. 1) atom per compound 2) ionic bond 3) covalent bond 4) compound b. The atomic mass of C is 12.011 amu. How many moles of C are there in a 3.50 g sample of carbon? c. What is the mass of KNO3 in a 0.750 L bottle of 0.50 M KNO3 solution?

Q: Of the following, the only empirical formula is a. C4H10 b.C4H8 c. C5H14 d. H2O2 e. O3

A: The empirical formula of a molecule represents the smallest number ratio of different atoms present…

Q: a. How many moles of phosphorus trichloride are present in 7.95 × 1022 molecules of this compound?…

A:

Q: 21. What is the molar mass of baking soda (NaHCO3)? a. 84.0 g b. 52.0 g c. 201.2 g d. 45.5 g a O b C…

A:

Q: a. How many molecules of carbon dioxide are present in 3.99 moles of this compound? molecules b. How…

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

Q: Calcium carbonate (CaCO3), also called calcite, is the principal mineral found in limestone, marble,…

A: Given, Calcium carbonate (CaCO3), also called calcite, is the principal mineral found in limestone,…

Q: Lab 5. Counting Molecules 1. Fill in the table C12H22011 NH,CI Mass (g) 1.0015 1.0238 Molar Mass…

A:

Q: a formula unit of

A: Since you have asked multi parts we will solve the first three subparts for you. If you want any…

Q: How many moles of Hydrogen do you have you have 5.68 x 10 ^ 24 Hydrogen atoms? a)  .9432 x 10 ^-1…

A: 1 mole hydrogen atoms contains 6.023 x 1023 atoms of hydrogen.

Q: The formula for xenon trioxide is XeO3. a. How many grams of xenon are present in 4.86 moles of…

A: The formula for xenon trioxide = (a) Grams of xenon present in 4.86 moles of xenon trioxide =?(b)…

Q: 9. A compound of titanium and oxygen has a composition by mass of 60 % Ti and 40 % O. Determine the…

A: In the given questions we are given that titanium is 60% and oxygen is 40%  Means for every 100 g of…

Q: 1. What do you call to the unit amount of a substance used for measuring large quantities of very…

A: Given:  unit amount of  substance used for measuring large quantities of very small entities such as…

Q: 1. Define Avogadro's number? explain w/ applications 2. What is a mole? 3. How are Avogadro's…

A:

Q: How many moles of Na are needed to produce 100 g of Al? 6 Na() + Al2O3(s) → 2 Al(/) + 3 Na2O(s) O A.…

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

Q: Please check my work on percent composition (chemistry.) 1. Use the Percent of Al, Si, and O to get…

A: In this question, we will determine the Empirical formula of the compound  For, the empirical…

Q: B. What is empirical formula of a compound 32.65% S, 65.3% O and 2.04% H?

A: Convert the percentage to gram, 32.65%  = 32.65g of S. 65.3% = 65.3g of O. 2.04%=2.04 g of H

Q: How many MOLES of dioxygen difluoride are present in 2.51 grams of this compound? How many GRAMS of…

A: Given,  Mass of dioxygen difluoride = 2.51 g.  The number of moles of dioxygen difluoride present in…

Q: 1.) Which is the empirical formula for the compound below? I. C3H60 1 C6H10O2 X III. C3H50 IV.…

A: The answer is given as follows

Q: Elements B and N form a binary compound BxNy. When 12 grams of this compound was made from its…

A: Empirical formula of a compound is the simplest positive integer ration of atoms present in the…

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.