I need to know which is the mass of crucible and kid with magnesium please

Q: Determine the molar mass of NaAlSi3O8. Use the abbreviated form of the unit in your answer and round…

A: Molar mass of  Na :- 23 g/mol  Al :- 27 g/mol  Si :- 28 g/mol  O :- 16 g/mol  These all data are…

Q: What is the mass of 4 moles of helium, He

A: A mole is a unit of measurement in chemistry that represents a certain number of atoms or molecules.…

Q: nd contains 12.4g of hydrogen. What is the percent by mass of hydrogen in the compound?

A: Given A 37.1 g sample of an unknown compound contains 12.4g of hydrogen. What is the percent by mass…

Q: Violet has found a container of aluminum bromide that says it contains 3.67 moles of AlBr3. What is…

A:

Q: If 1.00 g of gray zinc powder reacts with 0.49 g of yellow sulfur powder, what is the mass of the…

A: Given : Mass of gray zinc powder = 1.00 g Mass of  yellow sulfur powder = 0.49 g Mass of ZnS = ?

Q: How many helium atoms in 535kg of helium

A: A question based on atomic structure that is to be accomplished.

Q: What is the mass percent of silicon in the mineral orthoclase (KAlSiO)? Your answer should have the…

A: molar mass of KAlSi3O8 = 278.33 g/mol molar mass of silicon = 28.09 g/mol total mass of silicon in…

Q: PART B. Spectrophotometrilc Determination of the Copper Content of a Penny Mass of penny:3.138 Date…

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Q: Liquid octane (CH, (CH,) CH,) will react with gaseous oxygen (O,) to produce gaseous carbon dioxide…

A:

Q: Determine the formula weight of NH₄I. Provide an answer to two decimal places.

A: Since, Formula weight of the compound is the sum of atomic weight of each atom present in the…

Q: Count total atoms. The number in front of the formula in parentheses is the coefficient:…

A: The total number of atoms present in the following compound has to be determined: 5 C20H25N3O2 The…

Q: Theoretically, should the experimental mass percent water values for everyone who used the same…

A: Answer is yes  If everyone is calculating the percent mass of water in the same hydrate the answers…

Q: A chemist weighed out 5.7 g of magnesium. Calculate the number of moles of magnesium she weighed…

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Q: Calculate the mass in grams of 16.9 mol of carbon tetrachloride (CC14). Give your answer in…

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Q: Sylvanite is a mineral that contains 28.0% gold by mass. How much sylvanite would you need to dig up…

A: Given: % of gold in Sylvanite = 28.0 % Mass of gold = 87.0 g

Q: What is the percent by weight (w/w%) of sugar in soda? Assume the average mass of sugar in soda is…

A: w/w % =( mass of solute(g)/mass of solution(g))*100

Q: What is the mass in grams per mole?

A: Information about the question

Q: Calculate the number of nitrogen atoms in a 140.0 g sample of dinitrogen tetroxide (N,04). Be sure…

A: We have to calculate the number of nitrogen atoms in a 140.0 g sample of dinitrogen tetraoxide…

Q: H2O + CO2 ---> C2H12O6 + O2 How many moles of CO2 are needed to make 0.065 mol oxygen? Be sure…

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Q: Determine the mass of oxygen in a 5.8-g sample of sodium bicarbonate. Give your answer with correct…

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Q: How many moles does 120.30 g lithium represent? Use correct significant figures and units.

A: The number of moles of an element present in a given amount is calculated by using the following…

Q: What is the mass of a sulfur hexafluoride molecule ? grams

A: Molecular formula for Sulphur hexafluoride is SF6

Q: What is the mass of 83.89 moles of X? (Assume that the molar mass of X is 27.78 grams per mole.)…

A:

Q: What is the formula mass of gold(I) phosphate?     Include the unit in your answer.

A: Multiply subscript of every element in formula by its atomic weight (relative atomic mass) as…

Q: Sea salt is formed by natural evaporation of ocean water and contains 98% sodium chloride. The…

A:

Q: Calculate the mass of each sample. a. 1.05 × 10²26 atoms of neon, Ne(g)

A: 1 mole of atom = 6.022 × 1023 atoms

Q: A 15.6 g sample of magnesium carbonate contains 3.2 g of magnesium. What is the percent Magnesium in…

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: The formula for alum has 1 Al. How many units alum could be made from 7 Al atoms? Answer with a…

A: The molecular formula of alum is K2(SO4)·Al2(SO4)3·24H2O or KAl(SO4)2·12H2O

Q: 3.2x1022 H2O molecules Express your answer using two significant figures. ΑΣφ ? m2 = 9.6 %3D Submit…

A:

Q: When working in the lab, I take the mass of a sample of ammonium (NH3) and I find it to have a mass…

A: The mass of ammonia is = 45.74 g The mass of nitrogen is =? The mass of hydrogen is =?

Q: an unknown copper sample has a 37.2% Copper, what is the most likely identity of the sample?

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Q: What is the mass of 1.761 × 10^8 mol S? Answer in units of g.

A:

Q: Determine the mass in grams of 8.79 x 1021 atoms of zinc. (The mass of one mole of zinc is 65.39 g.)

A:

Q: What is the mass of copper  g what is the mass of chloride g given copper chloride 1.652g mass of…

A: Mass of copper = (mass of evaporating dish + copper) - (mass of empty evaporating dish) Mass of…

Q: A sample is marked as containing 47.9 percent calcium carbonate by mass. How many grams of calcium…

A: Given, mass of a sample = 58.9 gThe sample contains 47.9 percent calcium carbonate by mass. The mass…

Q: What is the mass percentage of C in caffeine, CsH1oN4O2? Provide an answer to two decimal places.

A: Mass percentage of Carbon in Caffeine is 6.18%

Q: What is the mass of 9 water molecules?

A: Given : Number of water molecules i.e H2O = 9 molecules

Q: What is the mass of 7.24x10 to the 23rd formula units of barium oxide?

A:

Q: How would you find the log of the mass of stearic acid in units of Da?

A: The mass of stearic acid is 284.5 g/mol. Da is the atomic mass unit that is used to measure the mass…

Q: Question: What is the molar mass of Sucrose (C12H22O11)?

A: Simply, molecular mass can be defined as the sum of the atomic masses of all atoms present in a…

Q: Calculate the mass percent of hydrogen in C6H6 to 2 significant digits.  [put only the 2 digit…

A: To solve this problem we have to calculate the mass percent of Hydrogen in benzene.

Q: BaCl2٠2H2O What is the mass salt?  What is the mass water?  What is the mass percent?

A: Ans

Q: You have 15.31 g of an unknown compound. Through analysis, you have determined that this sample…

A: Mass percent can be calculated as follows:

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.