0.4 moles of calcium carbonate contains how many carbon atoms?     A. 1.2 x 1023   B. 4.8 x 1023   C. 6 x 1023   D. 2.4 x 1023   E. 2.4 x 1024

Q: A 71.46-gram sample of magnesium hydrogen sulfate [Mg(HSO4)2] would contain how many moles? Is it…

A: Formula used :- Number of moles(n) = given mass (g)/molar mass(g/mol)

Q: How many grams of silver sample is equal to 0.0417 mole of silve

A: Given number of moles of silver (Ag)= 0.0417 moles Molar mass of Ag = 107.87 gmol-1

Q: Consider titanium.It is a metal with the same strength as steel but is 45% lighter.It is also…

A: Given data: The mass of titanium metal = 1 nanogram. To find: The number of atoms of titanium.

Q: How many moles of oxygen atoms are in 8.18 grams of Mg(NO3)2?    a. 0.662 moles of oxygen    b.…

A: The moles of an element is calculated as the amount of the element present per mole of the compound…

Q: 1. How many moles of Ni are there in a sample that contains 16.5 grams of nickel? moles 2. How many…

A:

Q: Is a a mole of copper microscopic or macroscopic

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

Q: The number of moles of S in 2.8 x 1024 atoms of S is: 1.0 mole of S atoms 4.6 moles of S atoms 3.1…

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Q: Part B: NazCO; Reaction: 1. Determine the experimental mole-to-mole ratio of NazCO3 to NaCl from…

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

Q: 13. How many moles are represented by 3.01·10“ helium atoms? 5 moles 0.75 moles 0.50 moles 1 mole

A: Given: no of helium atoms = 3.01 x 1023 atoms We know that, Avogadro number, NA = 6.02 x 1023 atoms

Q: Sulfur (S8), combines with oxygen (O2) at elevated temperatures to form sulfur dioxide. How many…

A: A question based on molecules that is to be accomplished.

Q: Aluminium has a density of 2.70 g/cm. How many moles of aluminum are in a 13.2 cm block of the metal…

A: Given : Density of Aluminium = 2.70 g/cm3  And volume of aluminium = 13.2 cm3

Q: 1. How many moles of lead(IV) oxide, PbO2, are present in a sample that contains 7.65 moles of oxide…

A: Since you have posted multiple questions, we are entitled to answer only the first question.

Q: 0.6 moles of strontium phosphate contains how many oxygen atoms?     A. 0.8 NA   B. 2 NA   C.…

A: Answer: Molecular formula of Strontium Phosphate: Sr3(PO4)2

Q: On Earth, there are roughly 200 million insects for every single human being. If the current world…

A: Given data: The number of the insect present in every single human=200 million. The total number of…

Q: g Fe203 Pg Co g Fe g CO2 d mole Fe203 mol CO mol Fe mole CO2 |partides Fe203 molecules CO atoms Fe…

A: The question is based on the concept of chemical reactions. we have to identify and write the units…

Q: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

A: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

Q: 20. Determine the molar mass of NH3 and H2O. Then determine the number of moles of H2O in 6.01grams.…

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Q: How many moles of NBR3 can be made from 2.22 x 102 moles of N2 ? N2 + 3 Br2 → 2 NBr3 + 44.0 kJ mol…

A: N2   +  3 Br2   --->  2 NBr3   given 2.22 × 10² moles of N2

Q: Rust (??2?3) can be decomposed in the presence of hydrogen and heat to make water and pure iron. If…

A: The reaction that takes place between rust (Fe2O3) and hydrogen (H2) in the presence of heat is…

Q: Jennifer produces 11.9 grams of calcium carbonate, CaCO3 in a chemistry lab. How many moles was…

A:

Q: Reaction B: Sodium Carbonate and Hydrochloric Acid Experimental Data 51.368 g (a) Mass of…

A: Given that,  Mass of sodium carbonate used = 0.309 g Molar mass of sodium carbonate = 105.99 g/mol…

Q: thimble of water contains 4.0×1021molecules. The number of moles of H2O is?

A: Moles =molecule/6×1023 Moles= 4×1021/6×1023 Moles= 0.66×10-2

Q: Calculate the moles of FeFe in 3.32×10223.32×1022 atoms of FeFe.

A: Number of atoms of Fe is given 3.32 X 1022

Q: a. How many moles of sulfur hexafluoride, SF6, are present in a sample that contains 6.06 moles of…

A:

Q: 11.How many moles of Zn are in 7.045 moles of ZnCl2?

A: Given, moles of ZnCl2 = 7.045 moles

Q: A compound containing carbon, oxygen, and hydrogen was found to have an empirical formula of CH,0.…

A: Empirical Formula is CH2O Formula mass of CH2O = 1 x Atomic mass of C + 2 x Atomic mass of H + 1x…

Q: [Review Topics] [References) Use the References to access Important values If needed for this…

A: given a) moles of calcium nitrate = 2.71 moles b) mass of calcium nitrate = 3.48 g

Q: A. How many moles of dioxygen difluoride, O2F2 , are present in a sample that contains 3.41 moles of…

A:

Q: 2H2 + O2 --> 2H2O If you have 50 grams of hydrogen, how many moles of water could be produced?

A: Reaction:-  2H2 + O2 --------> 2H2O Mass of Hydrogen gas (H2)  = 50 g  Molar mass of Hydrogen(H2)…

Q: In one experiment, a student used 0.21 g of aluminum and excess hydrochloric acid. a. Calculate the…

A: Given that 0.21 g aluminium react with excess hydrochloric acid.

Q: Aluminium has a density of 2.70 |g/cm3. How many moles of aluminum are in a 13.2 cm block of the…

A:

Q: Consider K2O+H2O->2 KOH; how many grams of KOH are produced from 1 mole of K2O? * -> is…

A: Step 1-This question is a stoichiometric question. Stoichiometry is based on the law of conservation…

Q: Use the References to access Important values If needed for this question. 1. How many ATOMS of…

A:

Q: The mass of water produced from 0.839 mol of ammonia

A: As given in the question- The reaction which leads to the formation of water using ammonia is the…

Q: What is the molar mass of the molecule OF? A. 19 g/mol OF B. 35 g/mol OF C. 46 g/mol OF D. 54 g/mol…

A:

Q: List the number of each type of atom on the right side of the equation…

A:

Q: How many atoms are in 5.80 moles of He? 4.00 1.03 ×× 1023 6.02 ×× 1023 3.49 ×× 1024 none of the…

A: Given information: Moles of helium atom = 5.80 mol

Q: During her baking class, Iana used 545g table sugar (C12H22O11). Calculate a) number of moles, b)…

A: Given, Mass of table sugar (C12H22O11) = 545 g Number of moles of table sugar (C12H22O11) = ? Number…

Q: 4 moles of C 12 moles of He and 24 moles of H2 will have the same weight Since moles of C is the…

A: 4 mole carbon means - 48g of carbon 12 Mole of Helium means - 48g of Helium 24 moles of H2- 48g of…

Q: Moles are the fundamental unit of chemistry. Why are moles so important? Please comment on molecular…

A: The amount of any substance is measured in a unit known as a mole which is equal to 6.023 x 10^23…

Q: 22) Compare 1 mole of H, 1 mole of O, and 1 mole of F2. Which has the largest number of molecules?…

A: 1 mol of substance contain an Avogadro's number of Molecules . (Avogadro's number = 6.022 × 10²³ )…

Q: F. Percent CaCO, in Mixture 1. Moles of CaCO, in sample from mol CO, generated (n See equation 13.1.…

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Q: How many oxygen atoms are in 1.50 mol of SO3?

A: Mole is a unit of quantity of substance. One mol of a substance contains 6.022 x 1023 units of that…

Q: How many moles of H,O would be needed to make 2.5 moles of O,? * 2 H,0 – 2H, + 1 O, O 2.0 moles O…

A: The balanced reaction given is, => 2 H2O -----> 2 H2 + 1 O2  Given : Moles of O2 produced =…

Q: Part a) Mr. Scholl likes to grow tomatoes in his backyard garden. Last year he grew a 6.27 × 10 to…

A:

Q: One mole of pure hydrochloric acid, HCl, requires 100 g of 80% pure NaOH to neutralize. The mass of…

A: The neutralization reaction between HCl and NaOH is: NaOH+HCl→NaCl+H2O According to the above…

Q: Use the References to access important values if needed for this question. a. How many moles of…

A: The formation of carbon tetrachloride takes place through a photochemical reaction of chlorine atoms…

Q: Answer the following questions using the data in the table below.  See the calculations section…

A:

Q: Consider the 124g sample of the compound? Determine the moles of calcium chloride present (a)number…

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.