How many atoms of oxygen are in the chalk in your name?

Q: Tin, element 50 on the periodic table, has 10 stable isotopes. 117^Sn makes up 7.687% of naturally…

A: Using the formula moles of Sn117 is calculated as,

Q: Calcium chloride is 36.11% calcium. How many grams of calcium are present in 2.55 x 103 g of calcium…

A: The mass percent of the calcium in calcium chloride is = 36.11 % The mass of calcium chloride is =…

Q: How many molecules of sulfuric acid are in 5.00 g of sulfuric acid? Write your answer with the…

A:

Q: The movie below shows some molecules in a tiny sample of a mixture of gases.

A: A question based on introduction to chemistry. The given movie is to be verified to whether the…

Q: other elements. alyzeu P₁, A similar analysis is made of three other substances that also only…

A: We are given Composition of Sample X (pure substance) comprising of Element E1 and element E2  We…

Q: Calculate the number of nitrogen atoms in a 120.0 g sample of dinitrogen tetroxide (N,04). Be sure…

A: Mass of nitrogen dioxide (N2O4) = 120.0 g  Number of nitrogen atoms = ?

Q: How many iodine atoms are present in 4.10 moles of diatomic iodine? Give your answer in scientific…

A: Given: The number of moles of diatomic iodine=4.10 moles To calculate: The number of iodine atoms.…

Q: Does a chemical reaction happen during this movie? If a chemical reaction does happen, write a…

A: The start of the movie shows the conversion of reactants into products. From the key, it is clear…

Q: up 9. The mass reference used in molar mass values in the modern periodic table is based on the…

A: We have find out the molar mass of carbon. Note~Since you have posted multiple questions, we will…

Q: What is the mass of 2.41 moles of AgN*O_{3} ? Write your answer to 2 decimal places and include the…

A: Given  Moles of AgNO3 = 2.41 mol

Q: When a 2.118 grams sample of pure copper is heated in oxygen, the resulting reddish- brown compound…

A: The mass of the copper sample is = 2.118 g The mass of the copper oxide is = 2.385 g The empirical…

Q: The fuel used in many disposable lighters is liquid butane, C4H10. Butane has a molecular weight of…

A: Molar mass of any element is equal to the atomic mass of that element in the unit of grams. Molar…

Q: How many moles are in 239 g of iron?

A: Given :- mass of iron = 239 g  To calculate :- number of moles of iron

Q: An unknown compound has the following chemical formula: N_xO where x stands for a whole number.…

A:

Q: Calculate the number of oxygen atoms in a 150.0 g sample of vanadium(V) oxide (V₂05). Be sure your…

A: Here, we have to calculate the number of oxygen atoms in a 150.0 g sample of vanadium oxide (V2O5).

Q: Methane gas (CH4) reacts with chlorine gas (Cl2) to produce liquid carbon tetrachloride (CCl4) and…

A: For the given reaction reactants are methane (CH4) and chlorine (Cl2). Therefore, types of atoms are…

Q: Mass of Zn 2.44 g Mass of Cu 0.063 g The mass of Zn and the mass of Cu in a coin are given in the…

A:

Q: What is the mass in grams of 4.57 × 10²⁵ molecules of Cl₂? I get the write and but the wrong number…

A: Mole concept: The number of molecules in one mole of chlorine is equal to the Avogadro number. The…

Q: Elemental analysis of a compound with molar mass 214.22 g/mol gives the following mass percent…

A: Given data,Percent of C=72.89%Percent of H=4.71%Percent of O=22.41%Molar mass of…

Q: Based on this information, what was the mass of the sample before and after heating? (Grams)

A: Mass of sample before heating = 31.909 - 30.453 = 1.456 gm

Q: How many grams of gold (Au)are there in 77.57 moles of Au? Be sure your answer has the correct…

A: To find the mass of gold in grams for 77.57 moles of Au, we use the molar mass of gold and multiply…

Q: Calculate the mass in grams of 3.19 x 1024 molecules of propylamine. The chemical formula for…

A:

Q: Write out the conversion factor of the given element in the given compound using the mass percent…

A: Mass percent composition is the percent by weight. It is abbreviated as w/w%.For a solution, mass…

Q: Calculate the number of oxygen atoms in a 100.0 g sample of scheelite (Ca WO,). Be sure your answer…

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

Q: How many moles are there in 82.5 grams of iron? O 1.48 55.85 4.97 x 1025 O none of the above 0.677

A:

Q: The number of atoms of sulfur in 32 g of sulfur is 6.022 x 1023 32 3.2 x 1023 32 x 6.022 × 1022

A:

Q: 9.43×1019 CH4CH4 molecules Express your answer using three significant figures.   Calculate the mass…

A: We know, 1mole consists of 6.022x1023 quantity. Molar mass of CH4=16.04g/mol We will convert number…

Q: The molecular formula of rimantadine is C12H21N.    How many carbon atoms are in 80.44 grams of…

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

Q: calculate the mass of fluorine contained in 56.5 g of copper(II) fluoride.

A: Percent by mass (%w/w) = (mass of F/mass of CuF2) × 100%

Q: Mass of silver chloride sample containing 2.05 × 10^20 silver ions

A: Number of ions of silver in silver chloride(AgCl) = 2.05 x 1020 ions 1 mole of silver ion contains…

Q: How many grams do 3.47 x 1023  formula units of Sr(ClO4)2 weigh?

A: The question is based on mole concept. We have been given formula units of solute. we have to…

Q: Calculate the mass of forsterite (Mg, SiO,) that contains a million (1.000 x 10°) magnesium atoms.…

A:

Q: Calculate the number of phosphorus atoms in a  100.0g sample of diphosphorus pentoxide P2O5. Be…

A:

Q: CH3 -C-C-C-C-C- Br Br

A:

Q: Calculate the number of hydrogen atoms in a 140.0 g sample of tetraborane (B,H0). Be sure your…

A:

Q: How many (NH4)2CO3 formula units are there in 16.9 g of (NH4)2CO3? Enter your answer using the…

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.