2. In a sample of 7.42 x 104 formula units of sodium carbonate, Na2CO3, determine: A) how many atoms of sodium? B) how many ions of carbonate, CO;?-? C) how many moles of NazCO3? D) how many grams of Na2CO3?

Q: The molecular weight of glucose (C,H„Os) is 180 g/mole. How many grams are there in 0.18 moles of…

A:

Q: Hydroxylamine nitrate contains 29.17 mass % N, 4.20 mass % H, and 66.63 mass % O. If its molar mass…

A: Given data : Hydroxylamine nitrate contains 29.17 mass % N, 4.20 mass % H, and 66.63 mass % O. If…

Q: Citric acid (right) is concentrated in citrus fruits and plays a central metabolic role in nearly…

A: the molecular formula of the citric acid is C6H8O7. Molar Mass = 192.12 g/mol

Q: (a) How many moles are in 1.00 kg bottle of water? (b) How many molecules? The molar mass of water…

A:

Q: a. How many moles? b. Weight how much? c. Contains how many molecules?

A:

Q: How many moles of hydrogen are in 3.06 10l g of glycine C,H,NO,?

A: Number of Mole-ratio of given mass of substance to the molar mass of substance is called number of…

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: Define a scope of Convert between moles of a compound and moles of aconstituent element

A: The conversion factor between moles of a compound and moles of constituent element has to be…

Q: How many moles are equal to 12.8 grams ofCaO2

A: Moles can be calculated as follows

Q: how many moles of propylene (C3H6) are in 25 g of the substance?

A: Number of moles of a substance is equal to the mass of substance divided by its molar mass. Write…

Q: Succinic acid is a substance produced by lichens. Chemical analysis indicates it is composed of…

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

Q: How many moles of propylene (C3H6) are in 25.0 of the substance?

A: When given mass is devided by its molar  mass then number of mole is obtained.

Q: How many moles of propane (C3H6) are in 25.0 g of the substance?

A:

Q: A compound is found to contain 40.05 % sulfur and 59.95 % oxygen by mass.What is the empirical…

A: Given:Mass percent of sulfur = 40.05 %.Mass percent of oxygen = 59.95 %.Molar mass of oxygen = 16…

Q: How many molecules (not moles) of NH3 are produced from 2.21*10^-4g of H2?

A: Given:Mass of H = 2.21 X 10-4 g of H2We need to find the number of molecules (not moles) of NH3 are…

Q: How many g of C4H4S2 are equivalent to 5.40 moles of this compound?

A: Answer: 627.48 g

Q: 1.How many moles is 176.17 grams of ammonium phosphate [(NH4)3PO4]? 2.How many moles is 6.77x1022…

A: Moles  = massmolar mass=No of moleculesAvegadro Number

Q: What is the mass of 0.035 moles of acetic acid?

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

Q: The Mole 1) How many zinc (Zn) atoms are contained in 5.16 moles of Zn? 2) How many moles of He are…

A:

Q: Minerals in soils and soil amendments (e.g., fertilizers) are described by formula units that…

A: To calculate: What is the mass in grams of 0.518 moles of calcium carbonate (CaCO3)?

Q: How many molecules (not moles) of NH3 are produced from 7.42×10−4 g of H2?

A: To obtain the number of molecules, first of all the reaction for the production of NH3 should be…

Q: Calculate the number of moles molecules in: ct an a) 10 g water b) 10 g ethanol C,H,O c) 10 g of…

A: Formula Used, 1. molesn=given massMolar Mass 2. Molecules = Moles x 6.023 x 1023

Q: A compound is found to contain 29.68 % sulfur and 70.32 % fluorine by mass. What is the empirical…

A: The simplest formula represents the smallest ratio of atoms present in a compound is known as…

Q: 4. 4.00 moles of sulfur dioxide SO2? 2.50 moles of methane CH,? How many moles are there in: 6.…

A: Each mole of any substance has Avogadro number of molecules. Each moles of any substance has…

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: How many sons of sulfur are present in 3.33 moles of disulfur decafluoride?  how many moles of…

A: Solution:       Avogadro's number shows that 6.022*1023 number of molecules are present in a mole of…

Q: Calculate the mass in grams of each of the following samples. (Remember from class that the…

A: Given, a. moles of potassium chromate = 0.251 mol b. moles of lithium perchlorate = 1.51 mol c.…

Q: If the given mass of water is 0.245 g,  how would you calculate how how many moles it has?  Inversly…

A: Given data, Mass of water 0.245 g Molar mass of water is 18 g/mol

Q: How many moles of oxygen atoms are present in 0.350 moles of Na2CO3, a commonly used water softener?…

A: Na2CO3 is known as Sodium Carbonate.

Q: Converting Moles to mass using Molar Mass I  A. sample of butanol, C4H10O, contains 0.317 mol of the…

A: Given: Moles of butanol = 0.317 mol Molar mass of butanol = 74.121 g/mol

Q: How many moles of C atoms are in 1 mol of sucrose (C12H22O11)? (1 mol is an exact number.)

A:

Q: Box the given and underline the unknown. MASS GRAMS 1. How many moles of nickel are in 82.34 grams…

A:

Q: Determine the molar mass of the following compound, Iridium(III) selenate ??

A: The given compound is made by  Selenate ion - SeO4-        +    Iridium ion- Ir+3 The compound…

Q: A hydrate of cobalt(II) chloride had a mass of 165.88 g before heating. After heating, the anhydrous…

A: Mass of CoCl2 before heating (hydrated) = 165.88 g Mass of CoCl2 after heating (anhydrous) = 130.9 g…

Q: How many atoms of sodium are in three moles Na2S?

A: Number of moles of Na2S = 3 mol

Q: How many molecules (not moles) of NH3 are produced from 8.33×10−4 g of H2?

A: The balanced chemical reaction for the formation of NH3 from H2 and N2 can be written as follows:

Q: Prozac, CırHuFaNO, is a widely used antidepressant that inhibits the uptake of serotonin by the…

A: Since you have posted a question with multiple sub-parts, as per our company guidelines we are…

Q: A solid hydrate weighing 2.682 g was heated to drive off water. A solid anhydrous residue remained.…

A:

Q: 3. Differentiate and define between: inorganic ionic compounds, inorganic covalent compounds,…

A: Solution The compounds are classified into two types on the basis of sources as below : Inorganic…

Q: What is the molar mass of C13H21NO3 (albuterol), a drug used to treat asthma? Reminder: molar mass…

A:

Q: A 0.1005 g sample of menthol (a compound comprised of C, H and O) produces 0.2829 g of carbon…

A: Mass of menthol = 0.1005g Mass of CO2 =0.2829 g Mass of H2O =0.1159 g

Q: This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE):…

A: Answer: This question is based on the stoichiometric calculation where in a molecule, ratio of each…

Q: 3. How many moles of CaCO, are present in 1.30 grams?

A: Avogadro's defined 1 mol as the collection of 6.022 × 1023 atoms or the ratio of given mass to the…

Q: A compound is composed of elements C, H, and N. A 4.200 mg sample of the unknown compound was…

A: The percentage of carbon and hydrogen can be calculated by using mass of CO2 and H2O produced by the…

Q: 24) 0.50 moles of C,,E

A: In the given question we have to calculate the number of grams in the given compound. moles of…

Q: Calculate the moles in 22.3 mg of nitrogen dioxide

A: The number of moles is a ratio of the mass of a substance to the molar mass of the substance.…

Q: y moles of NH, - 3

A:

Q: Tonsanh 1. How many moles of nickel(II) bromide, NiBr2, are present in a sample that contains 5.08…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

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.