1. How many moles are in each of the given samples? a) 2.50 mL of water (assume density of water is 1.00 g/mL) b) 10.00 mL of acetone (assume density of acetone is 0.7899 g/mL) c) 23.00 mL hydrochloric acid (12N)

Q: number of moles of (c)  acetate ions, CH3COO-, in 0.43 mol of Ca(CH3COO)2.

A: 2) In 1 mol of Ca(CH3COO)2 has 2 moles of  CH3COO- ion.

Q: Without doing any detailed calculations, determine which sample contains the most fluorine atoms.…

A: Correct answer is (c) 1.0 mol of F2 . (a) Moles of F = 25/20 = 1.25 mol (b) Moles of F = 1.50 mol…

Q: What is the mass in grams(a,b)/ name the ionic compound (c,d)/ name the ionic compound containing a…

A:

Q: 6. What does Avogadro's number represent? a. the number of atoms in 1 mol of an element b. the…

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

Q: Fictional, not on PT. I found a family of compounds that contain only A, X and Z elements in…

A:

Q: A hydrate of Na2CO3 has an initial mass of 4.31 g before heating and 3.22 g after.      What is the…

A: The initial mass of hydrate of Na2CO3 before heating is = 4.31 g The mass of Na2CO3 after heating is…

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: 49. How many moles are there in 500 g indigo, C16H10N202, a blue dye. c. 1.15 X10E24 mol a. 1.90 mol…

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

Q: A molecular compound is found to consists 30.4% nitrogen and 69.6% oxygen. if the molecule contains…

A: Given Composition of N = 30.4 % Composition of O = 69.6 %

Q: K2s2o3 + 4cl2 + h2o = 2khso4 + 8hcl Calculate how many grams of hack (molar mass = 136.17 mol/g is…

A: Here we have to calculate how many grams of hack is produced-

Q: What is the molar mass (in kg/mol) of carbon tetrachloride (CC14)? 6 17 C CL 35.45 12.01 2. 0.2535…

A: Here we are required to find the molar mass of carbon tetrachloride

Q: 41. Calculate the number of moles of carbon atoms present in each of the following samples. a. 1.271…

A:

Q: ▼ ▼ Part B Calculate the molar mass for Mn207, an oxide of manganese. Express your answer to five…

A:

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: Glycine, an amino acid used by organisms to make proteins,is represented by the following molecular…

A: Glycine is the simplest amino acid present. It is made up of an amine group and one carboxylic group…

Q: 41.  0.8 moles of ferrous phosphate contains how many oxygen atoms?   A. 3.2 x 1024      B.…

A:

Q: Which sample of magnesium chloride, MgCl2, contains the same number of moles as 69.6g of potassium…

A: Given the mass of potassium sulfate K2SO4 =69.6 gwe are asked to calculate the mass of  magnesium…

Q: H2lg) reacts with N{g) to produce NH3(g). What mass of H2(g) is required toct completely and produce…

A:

Q: Question3 part d

A: The formula of allicin is C6H10OS2 and the molar mass of this is 167.2716 g/mol.

Q: O Naphthalene (128.164 g/mol) H. H. H. O Acetic acid (59.04 g/mol) H-C-C HICI

A:

Q: How many moles (of molecules or formula units) are in each sample? Express your answer in moles to…

A: Given A) 29.2 g NO2 B) 1.35 kg CO2 C) 45.9 g KNO3 D) 164.5 kg Na2SO4 moles (of molecules or formula…

Q: Particular thermos can hold 473.2 ML of warm beverage. If the Thermo is filled with hot cocoa, which…

A: Given that,Concentration of the sugar = 0.23 M = 0.23 mol/L Capacity of the solution in thermos =…

Q: 1,What is the percent by mass hydrogen in ammonium hydrogen arsenite (NH4)2HAsO4 Group of answer…

A: Given, compound (NH4)2HAsO4 % Mass of H = ?

Q: A compound has a molar mass of 86 g/mol and has the percent composition (by mass) of 55.8% C, 37.2%…

A: To determine the empirical formula for compound , first we have to consider the given percentage of…

Q: MOLAR VIEW T03/S11 If a sample of (NH4)2HPO4 is found to contain 3.79 mol of NH4* ions how many…

A: The reaction can be written as follows: (NH4)2HPO4→2NH4++HPO42-

Q: A compound is composedd of elemnt X and hydrogen. Analysis shows the compound to be 80% X by mass,…

A: The empirical formula provides the atomic ratio of elements present in a compound. The given…

Q: 20. How many grams are in 1.18 x 1021 HF molecules? H = 1.008 g/mole and F=19.00 g/mole 1.01 g 0.992…

A:

Q: What is the percent by mass of Cl in the compound? d 0 of 2 points earned 2 attempts remaining What…

A:

Q: 0.5000 g sample containing NaCl (58.44 g/mol), BaCl2 (208.23 g/mol), and 11.56% by mass of…

A:

Q: estion 11 of 23 What is the number of formula units in a 1.88 mol sample of FeCl, ? formula units

A: 11) Given: 1.88 mol of FeCl3 1 mole of FeCl3 contains 6.022 x 1023 formula units. Hence, formula…

Q: Which one of the following statements concerning the mole is false? One mole of a substance has the…

A: Since moles = mass / molar mass Hence 1 moles of substance will have different mass compared to…

Q: 1. A compound X containing carbon, hydrogen and oxygen only have the following composition by mass:…

A: Given, Compound X containing Carbon, Hydrogen and Oxygen % of Carbon (C) = 54.5 % = 54.5 g % of…

Q: Which of these are correct/ true?  A. 1 mole of He has the same amount of atoms than 1 mole of Ca B.…

A: There are some correct statements where are written with explanatios.

Q: How many atoms are there in 75 molecules of acetic acid, CH3CO2H? A compound contains, by mass,…

A:

Q: 1. a. How many grams of barium nitrite, , are present in 4.62 moles of this compound? grams b. How…

A: 1. a) Given : Moles of compound barium nitrite i.e Ba(NO2)2 = 4.62 mol.

Q: Ethanol has a molecular formula of CH3CH2OH. 1.) What is the molar mass of ethanol? 2.) What is the…

A: 1) molar mass = sum of atomic mass of each atom present  in the molecule  Since in ethanol we have 2…

Q: 3. The average atomic mass of an atom is expressed in c. g/mol d. moles a. grams b. amu 4. Which…

A: The answer to the given question is as follows------------- The number of moles (n) = Mass (W)/Molar…

Q: 2. How many grams of chocolate are there in 84.0 X 102 molecules of chocolate, C,H,N,0,?…

A: To determine the grams of chocolate in 84.0×1022 molecules of chocolate C7H8N4O2

Q: By mass, Vitamin C contains 40.92 % C, 4.58 % H, and 54.50 % O.  What is the empirical formula of…

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

Q: Calculate the number of moles of the indicated substance for each of the following samples.…

A:

Q: Substanc Molar Mass (g/mol) e 14.01 16.00 Al 26.98 Fe 55.85 FesNz -195.57 AIN 40.99 Directions: Use…

A: No of moles is Mass of substance divided by its Molar mass

Q: . Suppose a sample is 32 mL of water, how many grams of oxygen is present in the sample? 2. How…

A:

Q: Calculate the number of moles of sulfur atoms present in each of the following samples.  A) 2.01g…

A: Given  A)  2.01 gram of Na2SO4  Number of mole of sulphur atom = ? B) 2.01 gram of Na2SO3 Number of…

Q: How many moles are in 130 grams of  N?  N= 14. 01       Molar Mass:     = ___________

A:

Q: The max dose of sodium hydrogen phosphate (Na2HPO4)that should be taken in a day is 3.8 grams. How…

A: MOLE: The unit of mole is 'mol'. It is defined as the estimation of the amount of substance of any…

Q: A. Determine the empirical formula for a compound with mass percent 48.91% carbon 18.51% hydrogen…

A: Suppose total mass of the compound as 100 g.          Mass of C=48.91 gMass of H=18.51 gMass of…

Q: 39. Calculate the number of molecules present in each of the following samples. a. 4.75 mmol of…

A: We know that for 1 mole of any chemical compound/species,there are Avogadro's number of molecules…

Q: Given the answers to the previous questions, please answer part c (find the empirical formula)

A: Empirical formula of a compound represents the proportion of the elements in a compound irrespective…