4. a) How many particles ( b) What is the mass in grams of that salt? )are there in 1.25 moles of NaCI (table salt)?

Q: The density of carbon tetrachloride is 1.59 g/mL. How many chlorine atoms are present in 55 mL of…

A:

Q: E4. If aluminum (Al), with an atomic weight of 27, combines with oxygen (O), with an atomic weight…

A: The balanced reaction of the formation of Al2O3 is as follows: Atomic weight of Al = 27 g/mol…

Q: What is the mass in grams of 250 liters of oxygen gas,O2?

A: 1 mole of a gas occupies 22.4 L.

Q: For the reaction C + 2H2 → CH4, how many moles of hydrogen are needed to make  182 grams of methane,…

A: Here a chemical reaction is given that is  C + 2H2 → CH4. Now, we have to calculate how many moles…

Q: What is the mass in grams of 0.626 cmol(+) of magnesium (Mg2+), where cmol(+) is the moles of charge…

A: Concept:  Number of moles can be find by the given formula:  Moles = weight M.W.  Where  M.W. =…

Q: a. What is the molar mass of Prevacid? Molar mass = g/mol %3D b. What mass of fluorine is in 0.73…

A:

Q: 2. What is the mass in grams of 6.8x10 molecules of ammonium?

A: We have to predict the mass of ammonia.

Q: 2.3 (a) How many grams are there in one amu of a material? (b) Mole, in the context of this book, is…

A: A.M.U is defined as mass of One atom.

Q: 4) How many moles of cesium are in 66.45 g Cs? 5) What is the mass (grams) of 2500. carbon atoms? 6)…

A:

Q: 3.112 The carat is the unit of mass used by jewelers. One caratis exactly 200 mg. How many carbon…

A: One carat is equal to 200 mg. the amount of diamond is 2 carat. The mass of diamond from carat to g…

Q: The chemical formula for chlorophyll is C₅₅H₇₂MgN₄O₅. Given the molar mass of the compound is 893.49…

A: The chemical formula for chlorophyll is C₅₅H₇₂MgN₄O₅. Molar mass of chlorophyll is 893.49 g/mol1 mol…

Q: A sample of glucose, C6H12O6, contains 1.250 x1021 carbonatoms. (a) How many atoms of hydrogen does…

A: a).

Q: 2. The volume of the nucleus of a carbon atom is about 9.9 x 10-39 mL. The molar mass of carbon is…

A: Given: Volume of carbon nucleus atom = 9.9 × 10-39 mL. And molar mass of a carbon atom = 12.00…

Q: How do i Calculate the mass, in grams, of 422 atoms of potassium, K (1 mol of K has a mass of 39.10…

A: 1 Mole of any substance contain 6.023 x 1023 entities  (entities = atoms/ions/molecule) 1 mole of…

Q: 3. How many molecules are there in 24 moles of FeF3?

A: Given values are,  Moles of FeF3 = 24 mol

Q: How many atoms would there be in 6.18x106 g of chlorine, Cl2?

A: Given, Mass of chlorine gas (Cl2) = 6.18 × 106 g Number of atoms are there in 6.18 × 106 g of…

Q: 2. What is the molar mass of lead (IV) nitrate, Pb(NO3)4?

A: Since you asked multiple questions so as per Q&A guidelines of portal I solved first…

Q: 2. How many moles of carbon dioxide are there in 443.5 grams?

A:

Q: 1. The following quantities are placed in a container: 1.5 x 1024 atoms of hydrogen, 1.0 mol of…

A: Given: Number of atoms of H = 1.5 × 1024 atoms. Moles of sulfur, S = 1.0 mol. And mass of diatomic…

Q: (a) What is the mass, in grams, of 1.223 mol of iron(III)sulfate?(b) How many moles of ammonium ions…

A: (a) Given, Moles of iron (III) sulfate is 1.223 mol Molar mass of iron (III) sulfate is 399.88 g/mol…

Q: How many molecules are there in 1,975.0 g of table sugar, sucrose, C12H22011?

A: Given,  1975 g of table sugar, C12H22O11

Q: How many moles are there in 6.45x1026 molecules of methane, CH4?

A:

Q: What is the mass, in kilograms, of an Avogadro’s number ofpeople, if the average mass of a person is…

A: Different units are used to express the volume and mass of substances such as grams, micrograms,…

Q: 3. What is the mass in grams of 0.0435 moles of alcohol (C,H;OH)?

A: Molar mass = 2 • ( molar atomic mass C ) + 6 • ( molar atomic mass of H ) + ( molar atomic mass of O…

Q: Consider a 214.6 g sample of the compound manganese(IV) perchlorate. Using the formula Mn(ClO₄)₄ (MM…

A: The mass of the sample of the compound manganese(IV) perchlorate is = 214.6 g The molar mass of…

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: How many C atoms of mass 12.00 amu are in 12.00 g of carbon?

A: Conversion factor used:  1 amu = 1.660539×10-24 gm Mass of carbon (C) = 12.00 g Mass of 1 carbon (C)…

Q: How many moles of Copper (I) ions, Cu+, are there in 0.064 g of copper (I) nitrate, CuNO3?

A:

Q: 8. How many moles are there in 7.5 x 1043 molecules of H2SO,?

A: Given that , Molecules of H2SO4= 7.5×10^23

Q: 3. How many moles of atoms are there in 180 g of Bromine?

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

Q: Calculate the mass in grams of 2.84 x 1024 molecules of methanol. The chemical formula for methanol…

A: Given  Number of molecules of methanol = 2.84 × 1024 molecules  Chemical Formula of methanol      =…

Q: The black powder used to propel each firework into the sky made up of 75% by mass potassium nitrate,…

A: Black powder contains 75% by mass potassium nitrate, 15% by mass charcoal, and 10% by mass sulfur.

Q: 5. For many years the recovery of gold, that is, the separation of gold from other materials,…

A: Given, 4Au+8KCN+O2+H2O→4KAu(CN)2+4KOH Gold extracted = 29.0 g moles of gold : =mass of goldmolar…

Q: What is the mass, in grams, of 4.06 1023 molecules of aspirin, C9H8O4?

A: Number of molecules of aspirin = 4.06 × 1023 One mole contains Avogadro’s number of atoms.…

Q: 1) How much does 0.28 mol of iron weigh? 2) How many molecules are in 116 g CCl4? 3) What is the…

A: 1) Given : Moles of iron = 0.28 mol.

Q: 4. How many moles are in 15 grams of lithium?

A: 4. Given :- mass of Li = 15 g  To calculate :- number of moles of Li

Q: What is the mass, in grams, of 9.49×1024 molecules of methanol (CH3OH)?

A: Please find the attached images for the answer

Q: A compound M2O3 is 30.06% oxygen, where M is an unknown metal. The molar mass of M2O3 is?

A:

Q: 13) How many moles are there in 4.50 x 1022 molecules of CH,?

A: 13.  Number of particles = 4.50 x 1022 molecules Number of atoms = Number of moles of CH4 x NA Here…

Q: What is the mass, in grams, of a copper(I) sulfate sample containing 2.03x1023 atoms of Cu?

A:

Q: What is the mass in grams of 5.98 x 1015 molecules of CS2?

A: Given is,  molecules of CS2 = 5.98×10^15 We know , Molar mass of CS2=76.139 g/mol Avogadro's number…

Q: 3. How many atoms are in 1.45 g of Ag?

A:

Q: What is the mass, in grams, of 9.93 × 10ª molecules of methanol (CH, OH) ? mass: g

A: Answer:- This question is answered by using the simple concept of calculation of moles using number…

Q: 5.2C23 molecules of hand sanitizer, ethanol (C,I IO ) is how many moles?

A: Given, Molecules of Ethanol = 23 General formula is: 1 mole has 6.023 x 1023 molecules.

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: 4. How many molecules are in 2.5 mole H,O?

A: Any  1 mol of substance  always contains avogadro number of molecules.

Q: Formaldehyde has the formula CH2O. How many molecules are there in 0.55 g of formaldehyde?

A: The molecular formula of Formaldehyde is CH2O Hence molar mass of CH2O = Atomic mass of C X 1 +…

Q: What is the mass in grams of 3.86 x 1025 molecules of N2?

A: Mole concept :-  1 mole = 6.022×1023 (Avogadro's number)  The mass of 6.022×1023 molecules of a…

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.