Section #: Date:_ - ulations: W WORK on separate paper. Use correct number of significant figures and re answers where required Find the number of moles in 25.0 grams of each of the following: a. Ni b. CH6 c. Ca(OH)2

Q: Part B How many grams are in 0.290 mole of Cl2 ? Express your answer to three significant figures.

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

Q: How many moles are there in a 30.476 g sample of titanium? Your Answer: Answer units

A: Given, Weight of the Titanium sample is = 30.476 g Molecular mass of Titanium is = 47.867 g/mol

Q: This is the chemical formula for nickel tetracarbonyl (a powerfully poisonous liquid used in nickel…

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Q: How many moles are in 1.05 x 1022 molecules of an unknown compound? Your Answer: Answer units

A: Here, we have to find the number of moles present in 1.05 × 1022 molecules of an unknown compound.

Q: Part A Copper(II) fluoride contains 37.42% F by mass. Use this percentage to calculate the mass of…

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Q: Calculate the moles of Cu in 6.4x1021 atoms of Cu. Express your answer using two significant…

A: Interpretation- To determine the number of moles of Cu in 6.4 × 1021 atoms of Cu .   Concept-  To…

Q: A compound of potassium had the following percentage composition: K 44.90%; H O.5787%; P 17.78%. The…

A: Given : K = 44.90 % H = 0.5787% P = 17.78% O = 100 %- (44.90 % + 0.5787% + 17.78%) =  36.74%

Q: Be sure to answer all parts Hew many moles of cobalt (Ce) stoms are there la 2.00 x 10 (200 hillion)…

A: Given, Number of Co atom = 2.00×10^9  Avogadro's no. = NA= 6.023×10^23

Q: How many grams are in 1.34 mol C203? Report your answer to three decimal places.

A: Since,  Given that, no. of mole of C2O3= 1.34 MOLE MOLAR MASS OF C2O3=62 g/mol

Q: of 10 ot in Progress oms of carbon are combined with 6.67 moles of hydrogen atoms

A: Given, Moles = 6.67 mol Moles of C = 6×6.67 mol

Q: How many grams of C are in 35.1 g of C6 H10S? Express the number of moles to three significant…

A: Given, mass of C6H10S = 25.1 g Now, moles of C6H10S  can be calculated as,            moles of…

Q: An organic compound weighing 0.6827 g is decomposed, giving 0.2095 g carbon and 0.08436 g hydrogen.…

A: Given : Total mass of compound = 0.6827g Mass of carbon = 0.2095g Mass of hydrogen = 0.08436g

Q: Part A Given the reaction of hydrogen and chlorine gases, calculate the moles of hydrogen that react…

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Q: Be sure to answer all parts. Fluorite, a minéral of calcium, is a compound of the metal with…

A: It is given that fluorite is compound of the metal with fluorine. Given data: Mass of sample…

Q: • Part A How many moles of atoms are in 7.00 g of 1C? Express your answer numerically in moles. >…

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Q: Calculate the number of moles in 21.0 g of each of the following: Y Part D Gaz Sa Express your…

A: Part D Given, mass of Ga2S3 = 21.0 g moles of Ga2S3 = ? Note:  molar mass of Ga2S3 = 235.64 g/mol

Q: A 28.57 gram sample of X contains how many moles? (Assume that the molar mass of X is 25.77 grams…

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

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Q: For every 1 mole of H,0, there are g of H,0 (rounded to 2 decimal places) Blank 1:

A: Molar mass is the mass of 1 mole of substance. The molar mass of H2O is 18.02 g/mol.

Q: Determine the formula weight of SrCl₂. Provide an answer to two decimal places.

A: Formula weight is the sum of the atomic weights of all atoms appearing in a given chemical formula.

Q: III. Calculate the percentage composition of each chemical compound. Circle your fina answer. Show…

A: Given that : We have to calculate the % composition of each chemical compound : 1. SnI4 2. Ca(OH)2

Q: Part C A sample of propane, C3 H8, contains 15.8 moles of carbon atoms. How many total moles of…

A: Given, sample of propane contains 15.8 moles of carbon.The moles of hydrogen present in the sample…

Q: how all work in your notebook, including dimensional c Combination/s 30z → 2 Fe2O3 a) How many moles…

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Q: What is the amount of Ne in moles in a 355 gram sample of Ne? (Molar mass of neon = 20.18 g/mol)…

A: Given   mass of Ne            = 355 gram  Molar mass of Ne  = 20.18 gram/mole  Number of mole of Ne…

Q: The bacterial fermentation of grain to produce ethanol forms a gas with a percent composition of…

A: The percent of C = 27.29 % The percent of Oxygen = 72.71 %

Q: A friend asks you to help her find the percent composition by mass of ethane (C,H). She says that…

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Q: MOLE-S.I. unit for amount of substance 1 mole is equal to: a. Mass/Grams (perodic table) b. 6.02…

A: (No. of moles)   n=Given wt.Molar wt.=Given atomsNA=Given volume22.4L

Q: Determine the mass, in grams, of 0.452 moles of lithium fluoride.  Record your answer to three…

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Q: How many grams of gold are there in 0.413  moles of gold?

A: Given: Moles of gold = 0.413 mol. Atomic mass of gold is 197 g/mol.

Q: Complete the following problems. Show all work. Determine the number of moles in each of the…

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Q: How do I solve for [FeSCN2+]  heres the formula they provided me but I would like steps on how to…

A: According to Beer-Lambert law- Absorbance A= apsilon× c×l where apsilon= molar absorptivity…

Q: One mole of O, has a mass of 16.0 g. Select one: O True O False

A: According to mole concept, 1 mole of a substance is equal to its molar mass. Therefore, first of…

Q: How do you determine the starting mass before an experiment when given the collected mass of…

A: A chemical reaction refers to the process in which one or more substances also known as the…

Q: what mass of calcium chlorate must be measured if a sample is to contain 4.17g of chlorine (C12)?…

A: Given :  Mass of chlorine (Cl2) = 4.17 g  Formula of calcium chlorate is CaClO3.

Q: CS2 Express your answer in moles. ? mole Submit Previous Answers Request Answer X Incorrect; Try…

A: To calculate the number of moles in 5.00 g of each of the following: CS2 Ca3N2

Q: How many nitrogen atoms are there in 1.00g of nitrous oxide (N2O sometimes called laughing gas?…

A: The given grams of nitrous oxide is first converted into moles then converted into atoms by using…

Q: A) Calculate the percent of oxygen by mass in iron(III)oxide. B) Calculate the number of grams of…

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Q: What number of moles of X is needed to obtain 75.36 grams? (Assume that the molar mass of X is 53.31…

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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:

Q: the molecular formula of glycerol is C3H8O3- 1. calculate the formula mass of glycerol ____g/mol…

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

Q: truct click submit at the end. DQuestion 40 How many grams are in 5.19 x 1023 molecules of carbon…

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Q: How many moles are there in a 20.389 g sample of titanium? Your Answer: Answer units

A: given, the mass of a sample of titanium = 20.389 g

Q: Calculate the moles of C2H6 in 3.76x1023 molecules of C2 H6. Express your answer using three…

A: Interpretation- To determine the number of moles of C2H6 in 3.76× 1023 molecules of C2H6 -…

Q: (Show all calculations where appropriate.) 1. A student measured a 6.790 g sample of a hydrated…

A: Some molecules have water of crystallization. The water of crystallizations is not bonded directly…

Q: Part A A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent…

A: In this question, we want to determine the percentage by mass of C and H in given Hydrocarbon C6H14…

Q: Part A What mass of phosphorous pentafluoride has the same number of fluorine atoms as 27 grams of…

A: Given, mass of oxygen difluoride (OF2) = 27 g mass of phosphorus pentafluoride (PF5) = ? Note:…

Q: 2.20 Fluorite, a mineral of calcium, is a compound of the metal with fluorine. Analysis shows that a…

A: Mass percent is a method of expressing concentration of the solution.   amount of substance present…

Q: ds d th nd of of 1 A solution of ammonia and water contains 1.30-10 water molecules and 7 50-10…

A: Given that , we have a solution of ammonia and water. Which contains 1.30 × 1025 molecules of and…

Q: Question 6 Complete the following dimensional analysis problem on a separate sheet of paper. This…

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Q: Constants I Peri Part C Suppose you have 3.50x10 8 reams of lead (Pb). How many lead atoms do you…

A: The number of Lead atoms can be calculated as, 1 ream= 500