hich of the following is closest to having exactly one mole of oxygen atoms?   a) 42 g HNO3 b) 32 amu O2 c) 7.3 x 10-23g CO2 d) 1.5 x 1023 molecules of H2SO4 e) 1 mole Ba(OH) 2

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: A 0.370-mol sample of a metal oxide (M₂O₃) weighs 55.4 g.(a) How many moles of O are in the…

A: Mass of 0.37 mole of metal oxide = 55.4 g. Mass of one mole of metal oxide = Molar mass of the metal…

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: 15. How many O atoms are in 2.00 g Al₂O3 ? Al = 26.98 g/mole, O = 16.00 g/ mole 3.54 x10exp22 O…

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 laboratory analysis a compound has the following mass percent composition: C 75.69%, H 8.80%, O…

A: Given:-  % C⇒75.69%  Molar mass=12g/mol  % H⇒8.80%    MM=1g/mol  % O⇒15.51%   MM⇒16g/mol

Q: (f) number of O atoms in 6.25 x 10-3 mol Al(NO3)3

A: Total number of oxygen atom = 3.39×1022 atoms

Q: 4. Calculate moles and atoms in 50 grams of 'S'. 5. Find the weight of 30 moles of H2SO, and find…

A:

Q: 1no What is the maximum mass of Al,(SO,), which could be formed from the reaction of 3.6×1023 atoms…

A: According to the mole concept, 1 mole of an element contains 6.022 × 1023 number of atoms.…

Q: Q9. How many oxygen atoms are present in a 5.00 mole sample of Al2(C C. 2.71 x 1025 B. 2.71 x 1024…

A:

Q: Q;) a compound is found to contain 40 % carbon, 6.7 % hydrogen, and 53 % oxygen by weight. What is…

A: Answer:- this question is answered by using the simple concept of calculation of epirical formula…

Q: 70. What is the empirical formula of a compound containing 53% carbon and 47% oxygen by mass (in g)?…

A: Hence open d is correct that is C3O2

Q: - How many grams of oxygen is presentin5.764 X 102'molecules of carbon nonoxide? O None of the above…

A:

Q: A 0.370-mol sample of a metal oxide (M2O3) weighs 55.4 g. (a) How many moles of O are in the sample?…

A: A 0.370-mol sample of a metal oxide (M2O3) weighs 55.4 g. (a) How many moles of O are in the sample?…

Q: All of the following are an empirical formula except     C3H8     Al3(SO4)2     N2O4…

A: Empirical formula of the compound is the simplest whole ratio of different atoms present in the that…

Q: 1. How many ATOMS of carbon, are present in 4.07 moles of carbon tetrabromide, CBR4? atoms of carbon

A: 1 mole of any substance contains Avogadro number of entities   i.e   1mole  = Avogadro number (NA)…

Q: 31. The empirical formula of C&H1206 is b. CH20 a. CHO c. C3H20 d. CHO2 32. What is the molecular…

A: " Since you have posted a question with multiple sub-parts , we will solve first three sub-parts for…

Q: 1) How many atoms does each molecule of H,SO, has? A) 8 B) 6 C) 7 2) A compound of carbon and…

A: we have to tell which option is correct from given choices of options by telling  number of atoms in…

Q: Calculate the number of moles of: (b)  Mg2+ ions in 8.320 mol of Mg3(PO4)2. (c)  acetate ions,…

A:

Q: 2. Calculate number of molecules in 2.33 g CH6. molar masses: C = 12.01 g/ mole and H = 1.008 g/…

A: Given: Mass of C6H6 = 2.33 g.

Q: O A. 9.3 moles O B. 42 moles OC. 56 moles O D. none of these O E. 14 moles OF. 19 moles O G. 84…

A: From balanced reaction , 1 mol Co3(PO4)2 required = 2 mol Na3PO4  14 moles Co3(PO4)2 required = 2 ×…

Q: How many moles of Al2(CO3)3 contain 2.63x1025 atoms of oxygen (O)? a) 393 moles b) 4.85 x 1046…

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

Q: How many moles of fluorine are present in 11.77 g of mercury(II) fluoride? O a. 4.933 101 moles O b.…

A: 1) d  2) MgCr2O7

Q: has a molar mass of 99.0 g/mol. Analysis of a sample shows that it contains 24.3% c and rest is…

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: Gold (Au) has been used to make ornamental objects and jewelry for thousande sf years. Gold nuggets…

A: Since you have posted multiple questions, we are entitled to answer the first only. 1) Given: Mass…

Q: N2(g) + 3 H,(g)→2 NH;(g) How many moles of NH, can be formed from 3.0 mol of N, and 6.0 mol of H,?

A: Given reaction is : N2 (g) + 3H2 (g) ---------> 2NH3 (g)  Moles of N2 = 3.0 mole  Moles of H2 =…

Q: 3.1. How many moles and how many molecules are there in 750g of a) H2 b) H2O c) H2SO4? How many…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

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: If Avogadro's no. is taken as 'N' then 2 moles of H20 will have how many atoms of H?

A:

Q: moles of water combined with 1 mole of KAl(SO4)2, and the formula of the hydrate

A: A compound which has the capacity of to hold water of crystallisation is known as hydrated salt    a…

Q: Number of atoms of C in 10 moles of CAH10 are: O 24.09x10^23 O 240.88x10^23 O 4.15x10^23 O…

A:

Q: What is the empirical formula of a compound that is 66.6% C, 11.2% H, and 22.2% O by mass? Select…

A: The empirical formula represent the ratio of elements present in a molecule. The ratios are…

Q: 10. What does Avogadro's number represent? a. the number of atoms in 1 mol of an element b. the…

A:

Q: 1.50 g Lithium Carbonate to atoms O 9.09 x 10*23 atoms O 7.12 x 10°23 atoms 8.06 x 10*23 atoms O…

A: Lithium carbonate is a chemical salt, a lithium carbonate salt with the Li2CO3 formula. This white…

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: Putting it all together... molar muss 6.02 x 10 grams + moles rep. particles Ex 1) Convert 50.0 g of…

A:

Q: 2Al(s) + 3CuSO4(aq) --> Al2 (SO4)3 (aq) + 3Cu(s) How many moles of aluminum will be required to…

A:

Q: If you have a sample of 55.2 grams of LizCO3, how many atoms of Li¿CO3 are in your sample?

A:

Q: A 10.68 g sample of compound that contains only carbon, hydrogen, and oxygen was combusted, and…

A: Consider the combustion reaction as; a CxHyOz + b CO2 → c CO2 + d H2O

Q: A compound has the empirical formula C3H4N. The molar mass of the compound is 108.16 g/mol. What is…

A: Given, Empirical formula : C3H4N  Molar mass = 108.16 g/mol Molecular Formula = ?

Q: What is the molar mass (g/mole) of cream of tartar (KHC4H4O6)?

A: The compound given is KHC4H4O6  Hence each molecule of KHC4H4O6 has  1) 1 Atom of K with atomic mass…

Q: How many Oxygen atoms are on either side of the equation?

A:

Q: of 7.5 x 10^23 atoms of Br? * A. 7,5x1batoms br x G02 MỖ atons Br Imol Br B. 7.5x1b tome br x_ Imol…

A:

Q: 2. How many moles of I, are in 8.23 moles of Nal 2Nal 1 Cl, > 2NACI +11,

A: From 2 moles of NaI produces 1 moles of I2 so Apply mole ratio.

Q: 2.5 mole CH3OH (M.wt= 32.04) give Non of these 1.58 * 10^23 particles 9.5* 10^23 molecules O 19.88 *…

A: 1 mole of any substance contains 6.022*1023 number of particle

Q: Q11. A compound was found to contain 64.80 % C, 13.62% H, and 21.58% O by mass. What is the…

A:

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…

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.