A sample of calcium chloride, CaCl2, has a mass of 27.8 g. What mass of chlorine is present in the sample?   A. 6.4 grams B. 15.85 grams C. 17.79 grams D. 10.98 grams

Q: How many grams of zinc are there in 22.7 g of ZnCl₂? a. 035 g b. 10.9 g c. 0.17 g d. 1476 g

A: 1 mol of ZnCl2 contains 1 mol of Zn atom is present The molecular weight of ZnCl2  = (65.4 +2 x 35.5…

Q: An analytical chemist measures the amount of Elements E₁ and E₂ in four samples of an unknown…

A: Pure substance:-  The substance in which the ratio of each element mass is constant for all randomly…

Q: a. What is the mass of 1.49 x 1024 atoms of chlorine? grams b. What is the mass of 9.12 x 1023…

A: a) mass of 1.49×1024 atoms of chlorine.

Q: sample

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Q: represents tne A 27.29 g 6.41 g 27.29% C 17.09 g 72.71 g O2 72.71% 100% CO2 100.0 g CO2 23.5 g CO, |…

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Q: Given the data below, calculate the mass of copper in the original sample. Mass of original sample…

A: This question can be solved using simple subtraction.

Q: A compound is found to consist of 1.37g of iron and 2.62g of chlorine. What is the percent by mass…

A: Given that: mass of iron = 1.37 g mass of chlorine =  2.62 g  To find: the percent by mass of…

Q: A student performs a reaction and the mass of the watch glass, filter paper, and product together…

A: Mass of watch glass + filter paper + product = 130.0g Mass of watch glass = 80.0g Mass of filter…

Q: 4. The volume of a piece of metal is 40.0 ml. Its density is 4.00 g/ml. What is its mass? a) 160 g…

A: Given density of metal = 4 g/ml  Volume = 40 ml

Q: What is an element? A. A substance that can be separated by physical means B. A substance that…

A: An element is a pure substance consisting only of atoms that all have the same numbers of protons in…

Q: The number of ammonia (NH3) molecules present in 4.85 grams of NH3is: a.1.02 x 10^25 c. 1.72 x…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: A 1980 penny has a mass of 3.025 g and is 85.0% copper. What is the mass of copper in the coin? A)…

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Q: The formula for carbon monoxide is CO. a. How many molecules are in 3.35 grams of carbon monoxide?…

A: Given:The formula of carbon monoxide is COMass of CO = 3.35 gWe have to determine:(a) The number of…

Q: A dietary supplement for calcium contains 600 mg of CaCO3 per tablet. How many grams of calcium are…

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Q: 12. A solid compound has a mass of 43.25 g. You scrape 2.5 g of the material off of the solid for…

A: Mass of compound = 43.25 g Mass of compound scraped = 2.5 g

Q: The element rhenium (Re) has two naturally occurring isotopes, 185 Re and 187 Re. Rhenium is 62.60%…

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Q: A 75.0 g sample of a pure liquid, liquid A, with a density of 3.00 g/mL is mixed with a 100.0 mL…

A: Given: Mass of liquid A = 75.0 g Density of liquid A = 3.00 g/mL. And volume of sample B = 100.0 mL…

Q: Find the mass of 1 molecule of Li H in gram. a. 7.949 b. 1.32 x1023 С. 4 d. 1.32 x10-23

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Q: You have a 125-g sample of one of these substances. You determine that it is made of 16.7 g H, 75.0…

A: A chemical compound often comprises the same elements in very same compositions by mass, according…

Q: If Mass of 10 bolts = 64.567 g Mass of 10 nuts = 20.321 g1. What is the mass of 225 bolts?2. What is…

A: Given,Mass of 10 bolts = 64.567 gMass of 10 nuts = 20.321 g

Q: Brass is an alloy of copper and zinc. Varying the mass percentages of the two metals produces…

A: Mass of Yellow zinc = 135 g Brass = an alloy of Cu and Zn Yellow zinc = A brass (34-37)% Zn by mass…

Q: In the reaction X + 3 Y 2 Z, the mass of X is 5.0 g and the mass of Z is 14.0 g. If the reaction was…

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Q: sample of pure alumina hydrate was obtained from a bag of flame retardant. A 5.000 g sample of the…

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Q: A nutrition table lists apples with a potassium content of 4600 mg/pound. Assume an average apple is…

A: According to the given data, Mass of an average apple = 75.0 g Because, 454 g = 1 poundMass of an…

Q: Describe a method that could be used to separate each mixture.a. iron filings and sand c. the…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Determine the mass of sodium in 15.5 g of NaNO3.   a. 17.4 g   b. 0.298 g   c. 4.19 g   d.…

A: Given that,mass of NaNO3 = 15.5 g Molar mass of NaNO3 = 84.9947 g/mol moles of NaNO3 = (mass of…

Q: *8. Go Consider a mixture of three different gases: 1.20 g of argon (molecular mass = 39.948 g/mol),…

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Q: if the density of an element 1.5 g/ml with volume 1.8 L, its mass will be .. 2700 O 2.7 O 1200 1.2…

A: Given question is asking about the mass of substance, if density and volume of solution is present .…

Q: An analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown…

A: Since the unknown substance, X contains elements E1 and E2, it can be either a compound of E1 and…

Q: A 75.0 g sample of a pure liquid, liquid A, with a density of 3.00 g/mL is mixed with a 50.0 mL…

A: Formula used :  density = mass/volume  Total volume = Vol1 + Vol2

Q: Find the mass of 1 molecule of Li H in gram. O a. 4 O b. 7.949 O c. 1.32 x1023 O d. 1.32 x10-23

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Q: In a reaction, 33.4 g of chromium(III) oxide reacts with 11.9 g of aluminum to produce chromium and…

A: The reaction taking place is between chromium (III) oxide i.e Cr2O3 and aluminium i.e Al to produce…

Q: What is the mass of NaCl in a 1 L bottle of 2.00 M NaCl? a. 29.3 g b. 58.0 g c. 116 g d. 234 g

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Q: metal g/cm3 aluminum 2.70 zinc 7.13 iron 7.87 copper 8.96 Using the table above determine the…

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Q: 3. Which process can separate a mixture of finely powdered iron and wheat flour? A. distillation 3.…

A: Mixture is a type of matter which is composed of two or more substances. These are called as…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".