. Calculate the following: a. Calculate the number of moles in a 56g sample of sulfur trioxide (SO3).  b. How many moles of sodium nitrate (NaNO3) do I have in a 34.0g sample of it?  c. Calculate the number of atoms of iron that are in a pure iron nail with a mass of 4.36g.

Q: How many grams are present in 2.4x1045 molecules of H2O2?

A: Given :- number of H2O2 molecules = 2.4 × 1045 molecules  To calculate :- mass of H2O2 (in grams)

Q: 31. Calculate the number of moles of the indicated substance present in each of the following…

A:

Q: A.How many grams of chromium(III) oxide, , are present in 2.46 moles of this compound? grams_____…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: a. What mass is represented by 0.0146 mol of C3H7OH (2-propanol, rubbing alcohol)? Mass %3D b. What…

A: a). Given: The moles of C3H7OH = 0.0146 mol. The molar mass of C3H7OH = 60.09 g/mol.

Q: Which of the following is an empirical formula? A. N₂O4 B. N₂H6 C. N₂O5 D. CsH₂4

A: An empirical formula is the simplest representation of a chemical compound in terms of the relative…

Q: Ticly many How many molecules are 1. How moles are present if you have 100 grams? molecules are…

A: Q.1  To determine the number of moles present in 100 g of TiCl4, we need to use the molar mass of…

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: a. How many N2 molecules are contained in 3.77 mol of. N2? N2 molecules b. How many N atoms are…

A: We have to calculate the number of N2 molecules in 3.77 moles of N2 as follows in step 2:

Q: 1. How many ATOMS of silicon are present in 2.01 moles of silicon dioxide ? atoms of silicon. 2. How…

A: One mole of a species contains avagadro number of atoms , molecules and ions

Q: [References] Use the References to access important values if needed for this question. a. How many…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Thus,

Q: Use the a. How many moles of sulfur atoms are present in a sample that contains 1.45 moles of…

A: To calculate moles from given moles, we need to use the mol to mol ratio for molecule to the…

Q: calculate the mass of calculate the mass of magnesium before each trial 2. Calculate the mass of…

A: To calculate: 1) Mass of magnesium before each trial 2) Mass of magnesium chloride after each trial…

Q: For boron: a. Write a conversion factor relating moles to number of grams b. Write a conversion…

A: Boron is an element having atomic number 5. It has five protons and five electrons in a neutral…

Q: How many moles are in 15 g Li?

A: Recall the following expression of moles           moles=given mass of a compoundin gmolar mass of…

Q: 17. Please check to see if the following are balanced. If they are not, please balance them a. K +…

A:

Q: 3. The possible 3 reactions for vinegar (aortic acil) and Sodium hydrogen carbonate (haking soda)…

A: We are given three reactions of vinegar/acetic acid reacting with baking soda/sodium hydrogen…

Q: a. How N2 molecules b. How many N atoms are contained in 3.05 mol of N2? N atoms c. How many moles…

A: Number of atom is equal to number of moles of atom × avogadro number

Q: Determine the number of moles in each of the following. a. 4. 26 g of ammonia, NH3 b. 113.5 g of…

A: Please find your solution below :

Q: V 3. How many oxygen atoms are in 2.50 moles of CH0?7 4. Calculate the molar mass of the Pb(CO2),…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: How do you convert the following number of atoms to moles and moles to atoms as needed to get a, b,…

A: we know  that  n=no of molecules or atoms/NA NA = 6.023 ×10 23

Q: Show your complete solution. Write your answer and solution in a clean sheet of paper 1. Consider a…

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: a. How many N2 molecules are contained in 2.55 mol of N2? N2 molecules b. How many N atoms are…

A:

Q: Aluminum sulfate is made according to the balanced chemical equation: 2AIO(OH)+ 3H2SO4 Al2(SO4)3 +…

A:

Q: Use the References to access important values if needed for 1. How many moles of C are there in a…

A: (1)1 mole of Carbon contains = 6.02×1023 atoms Then , number of moles present in  8.06×1021 atoms…

Q: In one experiment, a student used 0.21 g of aluminum and excess hydrochloric acid. a. Calculate the…

A: Given that 0.21 g aluminium react with excess hydrochloric acid.

Q: Which of the following contains the least number of moles of Ag? a.30.0 mL 0.55 M AgNO3 b.100 mL…

A: To find: the option with the least number of moles of Ag.

Q: Calculate the number of moles in the following quantities: a.)3.12 g NaHCO3 b.)570 mg ZnCl2 c.)8.9…

A:

Q: c

A: Generally, the number of moles is the representation of the concentration of the solute present in…

Q: How many moles of nitrogen atoms are present in a sample that contains 4.73 moles of dinitrogen…

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

Q: 1 mole of atoms = 1 mole of anything = 2 moles H2 can produce how many moles of NH3?

A: 1 mole = 6.022×1023 = Avogadro's number 1 mole H atoms = 6.022×1023 H atoms 1 mole N2 molecules =…

Q: When Oxygen is bubbled through a solution of sodium polysulfide, photographic hypo is produced. If…

A: answer is option a

Q: How many molecules of CH, are in these 5.00g? How many moles of Cl, are in 15.0 g of Cl,? How many…

A: Given, chemical reaction takes place between methane and chlorine. The balanced chemical equation of…

Q: following

A: Dear student I have given answer to your question in the image format.

Q: PART 2: MOLES, ATOMS, AND COMPOUNDS Use the information in the table below to answer the questions…

A:

Q: III. Molecular Formula 1. A hydrocarbon found in crude oil has an empirical formula of C,H, and an…

A:

Q: 1. Gold (Au) has been used to make ornamental objects and jewelry for thousands of years. Gold…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: a. Write the formula and calculate the molar mass for iron(II) chloride. Formula: Molar mass = g b.…

A:

Q: If 4.50 mol of HCl reacts with 4.50 g Mg, what mass of hydrogen can be produced? Mg + 2HCl ---> H2…

A:

Q: 1. How many GRAMS of phosphorus are present in 1.59 moles of phosphorus trichloride ? grams. 2. How…

A:

Q: 27. Select the correctly paired empirical and molecular formulas Empirical CH Molecular C,H2 C,H2…

A: The correctly paired empirical and molecular formula is given below.

Q: How many grams are contained in 6.30 mol of each compound? Do not convert these answers to…

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

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.