A 78.0-g sample of an unknown compound contains 12.4 g ofhydrogen. What is the percent by mass of hydrogen in the compound?

Q: which of these would most likely be an gram equivalent mass of copper?

A: 1 Faraday is defined as the amount of electric charge responsible for deposite or dissolve 1 gram…

Q: A 1.836 grams sample of coal contains 1.584 g of carbon.  What is the percent composition of carbon…

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Q: 10) In a round-bottom flask, a chemist completely reacts 4g of hydrogen with 25g of chlorine. What…

A: Mass of hydrogen = 4 g Mass of chlorine = 25 g Total mass of the compounds = 29g

Q: What is the molar mass of the compound barium nitrate? g/mol Provide an answer with two decimal…

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Q: / grams of

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Q: e moles c

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Q: Using dimensional analysis, convert 41.3 grams into moles( 1 mol = molar mass of substance). Round…

A: Given that, mass = 41.3 gram 1 mol= molar mass it means that , molar mass of the substance=…

Q: The nickel is comprised of two metals, nickel and copper. Surprisingly, the coin is only 25% nickel.…

A: The coin is comprised of nickel and copper. The mass percentage of nickel in the coin is = 25% The…

Q: A 25.3-g sample of an unknown compound contains 0.8 g of oxygen. What is the percent by mass of…

A: Percentage by mass is defined as the ratio of the mass of a substance to the mass of the solution…

Q: y grams of

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: If 10.11 g of limestone decomposes by heat to give 8.51 g of solid calcium oxide and carbon dioxide…

A: Limestone is a type of carbonate sedimentary rock which is composed 0of the minerals calcite and…

Q: any grams of CO is

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Q: A 33.5 metric ton sample of ore yields 2.95 metric tons of iron. What is the percent of iron in the…

A: Given that,Mass of ore sample = 33.5 metric tonMass of iron = 2.95 metric ton

Q: percent mass

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Q: y grams of CaCl, can

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Q: Tylenol is a widely used over-the-counter analgesic and antipyretic . The molar mass of Tylenol is…

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Q: How many grams of chlorine atoms are present in a 7.73 g sample of barium chloride (BaCl2)? Enter…

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Q: A 14.56 g sample of phosphorus reacts with 41.38 g of chlorine to form only phosphorus trichloride…

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Q: Liquid heptane, CH, burns in oxygen gas to yield carbon dioxide and water What mass of carbon…

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Q: When 10.0 g of ice melts into water, how many grams of water are produced?

A: The mass of any substance is not changed during the phase change, but the volume may change. So 10.0…

Q: und you

A: A chemical reaction is a process in which one or more substances or the reactant reacts to form one…

Q: le and the number of particles in the sample.

A: Avogadro number is a constant quantity for any substance. This number is 6.022 • 10^23  According to…

Q: A 28.0-g sample of nitrogen gas combines completely with 6.0 g of hydrogen gas to form ammonia. What…

A: Nitrogen gas reacts with hydrogen gas to form ammonia. Write the complete reaction. N2g+3H2g→2NH3g

Q: Using the mass of the empty beaker and the mass of the beaker + KOH, calculate the mass of KOH…

A: Number of moles = Mass in g/molar mass

Q: High-density lipoprotein (HDL) cholesterol is the “good” cholesterol because adequate levels reduce…

A:

Q: 47.9 grams of nitric acid are reacted with 39.3 grams of potassium sulfate. How much nitrate can be…

A: Consider the given information is as follows; Mass of nitric acid HNO3 = 47.9 g Mass of potassium…

Q: ny grams of

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Q: If 11.2 g of hydrogen reacts completely with 86.8 g of oxygen to form hydrogen peroxide, what is the…

A: The law of conservation of mass states that the mass can neither be created nor be destroyed. Hence,…

Q: e mass of this piece of magnesium

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Q: sample of Ammonia gas ( NH3) has a mass of 76 grams. How many molecules are in the sample.?

A: Given mass of Ammonia is 76 grams  molar mass of NH3 = 17.031 number of moles= mass / molar mass =…

Q: t mass of oxygen is

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Q: A chemist weighed out 101. g of mercury. Calculate the number of moles of mercury she weighed out.…

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Q: What is the mass of 136 molecules of HCL ?

A: We have to find the mass of 136 molecules of HCl. Molar Mass of HCl = 36.5 g mol-1

Q: Gaseous methane (CH,) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide (CO,)…

A: We have to calculate the maximum mass of water produced.

Q: The mass of 3 moles of soloing

A: Definition of mole . Is denoted by small n. Mole (n) = Weight in gram / Molar mass in g per mol Mole…

Q: 12 grmams of C' and 16 grams of O'

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Q: How many kilograms of lead(II) nitrate are produced from the reaction of 21.1 moles of silver…

A: Given, 21.1 moles of silver nitrate reacts with excess lead.we are asked to calculate the amount of…

Q: The chemical formula for barium oxide is Bao. A chemist measured the amount of barium oxide produced…

A: Molar mass of BaO = 153.33 g / mol  Moles = given weight / molar mass

Q: What is the mass of one oxygen molecule in kg?

A: The chemical formula of an oxygen molecule is O2 The mass of one mole = Molar mass = 32 g/mol Now,…

Q: Which has the greater volume- 10 g of hexane or 10 g of toluene? What is the volume of each?

A: We know, Density = Mass/Volume So, Volume = Mass/ Density

Q: An automobile runs for 10 minutes and burns 47 g of gasoline.The gasoline combines with oxygen from…

A: To determine the mass of oxygen consumed in the given process.

Q: A 4.5364 g sample of barium chloride dihydrate is placed in a beaker with an empty mass of 65.6433 g…

A: Given, mass of hydrated barium chloride dihydrate , BaCl2. 2 H2O = 4.5364 g            mass of empty…

Q: If 45.0 gg of gray iron powder reacts with 24.9 gg of red phosphorus powder, what is the mass of the…

A: First convert mass into mole by diving molar mass respectively Then Calculate limiting reagent by…

Q: Solid iron reacts with diatomic oxygen gas to produce iron (III) oxide. If 15 grams of iron reacts…

A: given data  solid iron = 15 gm diatomic oxygen =45 gm find mass of Fe3O4

Q: barium chloride hydrate, Mass of water Hydration (g)

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Q: How many Liters of H2 are made from 12 grams of Al?

A: Mass of Al = 12 g Volume of H2 produced =?

Q: mass of water

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Q: If 45.98 g of sodium combines with an excess of chlorine gas to form 116.89 g of sodium chloride,…

A: Limiting reagent is the reagent which is consumed in the chemical reaction completely. It decides…

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".