A hydrated compound with a mass of 7.00g is heated. Its mass after heating is 5.63g. What is the percent water by mass of this compound?

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: You are drying a sample of Ba3(PO4)2. After 5 minutes of drying it weighs 1.2034 g. You continue to…

A: Answer: Percent change in mass will be the ratio of change in mass with initial mass, therefore %…

Q: What is the % by mass of a silver ring that has a mass of 12.0 g and contains 11.1 g pure silver?

A: Mass percentage of a compound represents the mass of solute present in a given mass of compound. It…

Q: Rank the following from least to greatest mass.cg, mg, Mg

A: The standard unit of mass in the metric system is the gram. Other units of mass are milligram,…

Q: The mass of 1570 cm³ of tungsten.

A: 2.  a) given :- volume of tungsten = 1570 cm3  To calculate :- mass of tungsten

Q: Freya weighs an empty crucible and finds it to have a mass of 95.83 g (including the lid). After…

A: 1. Mass of the hydrate to start with = Mass of beaker with hydrate - Mass of empty beaker = 95.83 g…

Q: Aspartame is an artificial sweetener that is 160 times sweeter than a(table sugar) when dissolved in…

A: Aspartame is 160 times sweeter than sugar and it is used as artificial sweetening agents. Molecular…

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: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A: Given,  Formula of hydrate copper(II) chloride = CuCl2.xH2O Mass of crucible = 16.221 gMass of…

Q: 16) A 0.0758-g tungsten filament 17) A 1.50-g silver coin 18) A 60.0 g sample of FeCl3

A: Given that : We have to calculate the number of moles contained in each of the following samples :…

Q: A sample of sodium reacts completely with 0.213 kg of chlorine, forming 351 g of sodium chloride.…

A:

Q: Compound A has a density of 4.5 g/cm3. Suppose you plan to mix 197 g Element A (18.9 g/cm3) with…

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Q: High fructose corn syrup is used industrially as a sweetener in everything from carbonated beverages…

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Q: In a lab experiment, 8.21 g of phosphorus reacts with bromine to form 71.75 g of phosphorus…

A: According to the law of conservation of mass, the sum of mass of reactants and the sum of mass of…

Q: Which accurately show the law of conservation of matter (mass)? A) when 2 oxygen molecules…

A: There is a mistake in the question. The mass of clay should be 12 gm before cutting it into two. I'm…

Q: what is the mass in grams of 125 iron atoms?

A: Given that: Number of iron atoms = 125 Atomic mass of iron =  55.845 g/mol

Q: 200 g of a silicon compound is decomposed, resulting in 41 g of solid silicon and the remainder of…

A: Calculate the number of moles of both the compounds. nSiClF3 = WSiClF3MSiClF3nSiClF3 =200 g120.5…

Q: Please assist with number 3

A: We are authorized to answer three subparts at a time since you have not mentioned which part you are…

Q: the mole is a common unit of measurement in chemistry you mat not be faniliar with mikes but one of…

A: Given : Mass of water i.e H2O = 290 g And mass of 1 mole of water = 18 g

Q: A compound of copper and sulfur contains 88.39 g of metaland 44.61 g of nonmetal. How many grams of…

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Q: In the combustion reaction between propane and oxygen gas, if 44.0 g of propane is burned in 160.0g…

A: According to the rule of conservation of mass, the total mass of the reactant equals the entire mass…

Q: An antacid tablet weights 1.36g. If the percent active ingredient of calcium carbonate is 38.2%,…

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Q: Ethanol is a common laboratory solvent and has a density of 0.789 g/mL. What is the mass, in grams,…

A: Density is the ratio of mass and volume.

Q: Two samples of potassium chloride are decomposed into their constituent elements. One sample…

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Q: 8. A 141 mg sample was placed on a watch glass that has a mass of 9.203 g. What is the mass of the…

A: Given that, mass of sample=141 mg mass of watch glass= 9.203 g then,

Q: The mass of a test tube and hydrate was 35.2755 grams. The mass of the empty test tube was 23.7726…

A: Mass of water is equal to the mass of the hydrated salt test tube and the mass of anhydrous salt…

Q: What is the mass of 1.86x10^24 molecules of nitrogen

A: first find the no. of moles of N2  then find mass by multiply by its molar mass

Q: What is the combined mass in grams of object that have masses of 0.2000kg, 80.0g and 524mg

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Q: A 5.00 g mixture of potassium sulfide and potassium chloride contains 2.80 g potassium. What…

A: The mass percentage is calculated using the formula given below: Mass percentage =mass of potassium…

Q: The seven most abundant ions in seawater make up morethan 99% by mass of the dissolved compounds.…

A: Since you have posted questions with multiple subparts, we will answer the first three subparts for…

Q: You wish to prepare 202 grams of 11.8 % Ba(OH)2. You will need _____ grams of barium hydroxide and…

A: Given:  Weight of solution = 202 gm  % by mass = 11.8 %  Density of water = 1.00 g/ml

Q: Substance AB2 is 60% A by mass.  What is the percent A by mass for substance AB?  Justify your…

A: For given compound AB2, 60% by mass is A then obviously 40% is B. That is for 100g of given…

Q: Student K was asked to determine whether his bar was made of pure palladium.  II) Student S was…

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Q: Balance each reaction and write its reaction quotient, Q꜀:

A: Reaction quotient is defined as the product of concentration of products divided by the product of…

Q: 7. What kind of a compound is KN and how do you know this? Draw a representation of three units of…

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

A: A pure substance will have the same composition of the elements present in it. The percentage of…

Q: A standard aspirin tablet contains 325 mg of aspirin, which has the molecular formula C9H8O4. How…

A: The number of moles of a substance is the ratio of its given mass by molar mass of the substance. It…

Q: The mass of a test tube and hydrate was 35.2755 grams. The mass of the empty test tube was 23.7726…

A: When a molecule contains the water molecules attached to it in a specified number, then the molecule…

Q: An analytical chemist measures the amount of Elements E, and E, 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: If you have 74.2% silicon dioxide in your 52.0g sample, what mass (in grams) of silicon dioxide do…

A: Given: Mass of the sample=52.0 g  Percentage of silicon dioxide in the sammple= 74.2 % Mass silicon…

Q: Mass of one a mu) Carbon Type 1                                12.0 Carbon Type 2…

A: The sum of all the values of individual masses divided by the total number of items in the sample is…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A:

Q: What is the mass of fresh water (ρ= 1.00 g/cm3) in a 78.0 Ltank?

A: Given : density of water = 1.00 g/cm3  Volume of tank = 78.0 L

Q: The mass of 1570 cm³ of tungsten

A:

Q: Question 3

A: Copper is an element having symbol Cu and aluminum is an element having symbol Al.

Q: A bottle of a tile cleanser contains 135g og HCl and 775g of water. What is the percent by mass og…

A:

Q: Some students burned magnesium in excess oxygen, as described by the equation 2 Mg(s) + O2(g) --> 2…

A:

Q: An 8.53 mg sample contains 1.72 mg of phosphorous.  What is the mass percentage of phosphorous in…

A: Given  mass of phosphorous = 1.72 mg mass of compound = 8.53 mg  Formula : mass percentage of…

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".