Determine the number of moles in the given amount of each substance. Show or explain your work. a. 2.025x1024 atoms of rhodium b. 1.15x1025 sodium ions in Na₂SO4 c. 7.82 grams of fluorine gas (fluorine gas is a molecule not just an atom...why again?) d. 15.34 grams of nitrogen trihydride (ammonia) e. 95.23 grams of sodium hypochlorite (bleach)

Q: 33. How many hydrogen atoms are in 4 molecules of isopropyl alcohol, C;H-0? А. 2.4 x 1023 atoms of H…

A: Given, 4 molecules of isopropyl alcohol, C3H7O   Required,                Number of hydrogen atoms…

Q: 13. How many oxygen atoms are in 225 g of O2? a. 4.23 x 1024 b. 6.84 x 1024 c. 8.47 x 1024 d. 1.69 x…

A: Number of Atoms of Oxygen can be calculated as -

Q: How many molecules are in 2.33 moles of Dinitrogen Trioxide? A. 1.71 x 1023 molecules Dinitrogen…

A: Given  Number of mole of N2O3 = 2.33 mole  Number of molecule = ?

Q: a. Oxalic acid is a crystalline solid with the molecular formula H2C2O4. A sample of pure oxalic…

A:

Q: inside the front cover of this book to calculate the mass in grams of each of the following samples.…

A: Note : As per our guidelines we are supposed to answer only first 3 subparts of first question.

Q: Calculate mass (in grams) of sodium in 8.5 g of each sodium- containing food additive. a. NaCl…

A: Since you are asked for multiple sub-parts , we are entitled to solve first three.

Q: A sample is found to contain 0.650 mole of a chemical substance. a. How many atoms are present if…

A:

Q: 18. The chemical formula for hydrogen sulfide is H,S. What is the percent composition by mass of…

A: Step 1: Solution Given,Compound = H2Smolar mass of : hydrogen(H) = 1 g/mol, Sulfur(S) = 32…

Q: 1. How many moles are present in 24.0 grams of Sb,S,? a. 1.31x10 mol b. 1.56x10 mol c. 5.94x10 mol…

A: (1) Number of moles of Sb2S5 can be determined by using the formula given below as: Moles of…

Q: 1.aDo a mole of Na and a mole of NaCl contain the same number of Na atoms ? Explain your answer .…

A: Same moles of any particle will have same number of that particles .

Q: Use the References to access important values it needed for a. How many ATOMS of carbon are present…

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

Q: 2. A sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g. a. Record each step needed to calculate the…

A: a. Given that: Mass of sugar = 9.00 g. Molar mass of C12H22O11 = 12×12 + 22×1 + 11×16Molar mass of…

Q: How many grams of oxygen is present in 5.764x 1022 molecul es of carbon monoxide? A. 0.15g В. 0.31g…

A:

Q: How many hydrogen atoms are in the molecule below?

A:

Q: What is the mass in grams per mole?

A: Information about the question

Q: 12. Complete combustion of 1.550 grams of a compound produces 1.250 grams of carbon dioxide and…

A: Given data :

Q: 1. A compound is 48.38% carbon, 8.12% hydrogen, and 53.5% oxygen by mass. Find its empirical…

A:

Q: How many iron ions are present in 43.6 g of Fe203? Select one: O a. 1.64 x 1023 ions O b. 2.63 x…

A:

Q: An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: Write the chemical formula for each compound, and then calculate the amount in moles in each sample.…

A: Given: Mass of copper(II) sulfate pentahydrate = 78.1 kg

Q: 2. Consider the compound potassium hypochlorite. a. Write out the formula for potassium…

A: 2. We have to answer the following questions Write the formula of the potassium hypochlorite.…

Q: What is the total number of atoms contained in 3.00 moles of cobalt?

A: Given :- number of moles of Co = 3.00 mol  To calculate :- number of atoms of Co

Q: Complete the table below for calculating the molar mass of the compound sulfur hexafluoride .…

A: Different type of atoms have different atomic masses and sum of atomic masses present in any…

Q: How many atoms of oxygen are in 3.52 moles of calcium nitrate?   Select one: a. 8.48 x 10^24 atoms O…

A: Mole is defined as the ratio of given mass and molar mass. The unit of mole is mol. It is utilized…

Q: How many atoms of hydrogen are present in 4.54 g of ammonia? A. 6.64 x 1019 B. 8.20 x 1024 O C. 1.61…

A: We know that , 1 mole of substance contain  = 6.022 × 1023  atoms By using this relation , we can…

Q: Prevacid is used to treat gastroesophageal reflux disease (GERD). The chemical formula of Prevacid…

A: Given, Prevacid is used to treat gastroesophageal reflux disease (GERD). The chemical formula of…

Q: Which sample contains the greatest number of atoms. A sample of Li that contains 3.12×1024 atoms or…

A: Avogadro's  number is a proportionality factor and gives the number of atoms, molecules or ions in…

Q: 6. Figure out the correct formula and calculate the molar mass for the following substances... Show…

A: 1) Iridium (VII) chloride : explanation : The oxidation state of iridium is seven so seven chlorine…

Q: What can be said about 1 mole of Ag and 1 mole of Au? A. They have the same molar mass. B. They…

A: What can be said about 1 mole of Ag and 1 mole of Au? A) They have the same molar mass. B) They…

Q: Use the References to access important values if needed for this question. According to the…

A:

Q: a. Using the average atomic mass, calculate the number of atoms present in 4.50 g of silver, Ag.…

A: 1 mole = 6.022 x 1023 atoms/molecules/ions  Mass of 1 mole = molar mass

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.