A salt crystal has a mass of 0.20 mg, How many NaCl formula units does it contain?

Q: What is the molar mass of Sodium Sulfide. Na2S?

A: The molar mass of sodium sulfide has to be given.

Q: A compound contains 18.7% lithium, 16.3% carbon, and 65.0% oxygen by mass. If its molecular formula…

A: Given data, %Li = 18.7% %C=16.3 % %O=65.0%  molar mass of compound= 73.8 g mol-1 Then, molecular…

Q: A compound contains only carbon and hydrogen and has aformula mass of 28.06 amu. What is its…

A: Given data: Molar mass of the compound = 28.06 amu

Q: How many MOLECULES of dioxygen difluoride are present in 4.66 moles of this compound ?

A: given, moles of dioxygen difluoride = 4.66 moles

Q: How many oxygen atoms are in 0.68 moles of acetic acid ?

A: The number of moles of acetic acid is = 0.68 mole The number of oxygen atoms in this amount is =?

Q: What is the number of formula units of 5.36 grams of ammonium sulfate?

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

Q: How many molecules of water are in 6.0 g of ice ,H2O(s).

A: A molecule is described as two or more atoms of the same or different element that are linked…

Q: How many atoms of oxygen are in 10.20 mol of tetrathionate (S4O62-)ion?

A: We have determine how many oxygen atoms are present in 10.20mol of tetrathionate.   Calculation is…

Q: How many formula units are there in 35.5 g of calcium chloride?

A: This question can be solved by the following equation: Number of formula units = (Weight/Molar mass)…

Q: How many hydrogen atoms are in 0.1488g of phosphoric acid, H3P05

A:

Q: A compound is found to contain 50.05 % sulfur and 49.95 % oxygen by mass. What is the empirical…

A: Solution: Let us assume we have 100 g of given compound. So from the given percentage of each…

Q: Write a sentence that describes how to determine the number of moles of a compound in a known mass…

A: Moles of any substance is defined as the 6.022 X 1023 molecules of the substance.

Q: A compound contains only nitrogen and oxygen and has aformula mass of 44.02 amu. What is its…

A: The atomic mass of Nitrogen, N = 14.01 amu The atomic mass of Oxygen, O = 16 amu The atomic mass of…

Q: What is the molecular formula for a compound with the empirical formula CH and a formula mass of…

A: Empirical formula (EF) refers to the formula of a compound in which the elements are present in the…

Q: What is the number of nitrogen atoms in 5.360 g of ammonium sulfate?

A:

Q: how many molecules are in 97.21 grams of sodium chloride NaCl?

A: I mol contains 6.023 × 1023 molecules. Number of moles = given mass/ molecular mass

Q: 3. How many formula units (particles) of NaCl are in 4.46 moles of this compound?

A: SOLUTION  Moles of NaCl = 4.46 mol 1 mol NaCl has 6.02×1023 formula units of NaCl So ,  4.46 mol…

Q: How many formula units of zinc selenide are there in 2.9x10^-3 moles of zinc selenide? Round to…

A: The formula unit is used to express the smallest ratio that exists between the cations and anions in…

Q: How many formula units of H3PO4 are in 0.45 moles of H3PO4?

A: We have to multiply the number of moles by Avogadro's number.

Q: What is the formula mass of H2SO4?

A: The formula mass of H2SO4 is to be calculated.

Q: mass

A:

Q: 1 Compound X has a molar mass of 416.41 g-moland the following composition: element mass %…

A:

Q: How many hydrogen atoms are in 82.35 g (NH4)2504? Hint: must use Avogadro's number

A: Calculate number of H atoms present in 82.35 g of (NH4)2SO4 ?

Q: How many GRAMS of dioxygen difluoride are present in 4.95×1022 molecules of this compound ?

A: Number of molecules of O2F2 = 4.95×1022

Q: How many formula units are in 108.65g of aluminum sulfate?

A: Given data, mass of Al2(SO4)3 = 108.65 g  molar mass of Al2(SO4)3 = 342.15 g mol-1  no. of formula…

Q: what is the formula mass of calcium nirate? ( round to a whole number)

A: To Write the formula of a chemical compound. first write the Symbol of cation and then write the…

Q: Calculate the mass of N in 4.75 × 1023 formula units of Mg3N2

A: Given: Formula units of Mg3N2 = 4.75×1023 formula units

Q: What is the molar mass, mass, and no. of particles of Calcium fluoride

A: Calcium fluoride is the inorganic compound of the elements calcium and fluorine with the formula…

Q: determine the number of cations in 0.125 moles of potassium carbonate

A: 1 mole = 6.022 X 1023 Chemical Formula of Potassium Carbonate= K2CO3

Q: What is the formula mass for a compound? Why is it useful?

A: The formula mass is defined as the summation of the average atomic masses of each atom that is…

Q: How many atoms are in 73.3 g of sodium sulfate (Na2SO4) ?  It says there are seven atoms in a…

A: Applying concept of mole and avogadro concept.

Q: How many chloride atoms are there in 8.4 mol of PCl5, phosphorus pentachloride?

A: In each molecule of PCl5, 5 chlorine atoms are present. The number of molecules of PCl5, NPCl5, in…

Q: How many oxygen atoms are in 28 molecules of dinitrogen tetroxide, N₂O₄?

A: The answer to the following question can be calculated as -

Q: A compound contains 15.94% boron with the remainder being fluorine. What is the empirical formula of…

A: Simplest whole number ratio of constituent elements of a compound is called empirical formula…

Q: How many formula units make up 32.4 g of magnesium chloride (MgCl2)?

A: Calculate the number of moles of magnesium chloride. Number of moles = Given massMolar massNumber of…

Q: 1. How many atoms is 6.00 mole of sodium? 2. Convert Ó.024 mole to formula units of table salt. 3.…

A: Since you have posted questions with multiple subparts we will solve the first three subparts for…

Q: Be sure to answer all parts. Calculate the molecular mass or formula mass (in amu) of each of the…

A: Molecular mass or formula mass of the substance is the sum of the atomic mass of each element…

Q: How many atoms of Carbon are in 0.51 mol of procaine, C13H20N2O2, a pain killer used by dentist?

A: Given Data:

Q: How many molecules of ammonia would there be in 22.7 grams of ammonia, NH3?

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

Q: How many formula units are present in 500.0 g of lead(II) chloride?

A: Answer :- 1.084 × 1024  The formula units presents in 500.0 g PbCl2 = 1.084 × 1024…

Q: Compound X has a molar mass of 416.48 g·mol 1 and the following composition: element mass %…

A:

Q: How many molecules is 8.87^12 moles of carbon tetrachloride (CCI4)

A:

Q: Caroline knows the amount of a compound in moles. To find the number of molecules in the given…

A: it was known, the amount of a compound in moles.

Q: How many molecules of water are in 6.0 g of ice, H2O(s)?

A: One mole of water contains 6.023×1023 molecules of water. The relationship between number of moles…

Q: A salt crystal has a mass of 0.12 mg. How many NaCl formula units does it contain?

A:

Q: b) What is the molecular formula given that its mass is 121 g. ( to

A: Given;

Q: how many formula units are in 500. g of lead oxide, chemical formula PbO2

A:

Q: How many atoms are there in 0.1 mol Na?

A:

Q: B. How many number Na* ions in 3 g of Na3PO4?

A: Given, The mass of Na3PO4 = 3g Note: one mole (molar mass ) of any substance contains Avogadro…

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.