As a solution of copper sulfate slowly evaporates, beautiful blue crystals made of Cu(ll) and sulfate ions form such that water molecules are trapped inside the crystals. The overall formula of the compound is CuSO4 • 5H20. What is the percent water in this compound? %

Q: Glucose has the formula C6H12O6. What is the percent composition of oxygen in glucose to three…

A: The percent composition of oxygen in glucose is to be calculated.

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.402…

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

A:

Q: A sample of a compound analyzed in a chemistry labratory consists of 5.34 g of carbon, 0.42 g of…

A: Percentage composition or w/w  percent: it can be calculated  a given below:…

Q: The molar mass of a compound was determined to be 23.99 g/mol. If the sample contains 3.2 mol, then…

A:

Q: Bauxite is the ore that aluminum comes from. Its” formula is ( Al2O3) What is the percent Aluminum?

A: Given Moleular formula = Al2 O3  atomic mass of Al  = 26.98 gmol-1 atomi mass of O  =   15.999…

Q: A 5.000 g sample that contained NaCl and BaCl2*2H2O was heated. After heating, the sample had a…

A: Number of moles of barium chloride and water is determined as given below:

Q: What is the percent by mass of hydrogen in sulfuric acid

A: Molar Mass of H = 1 g/mol Molar mass of H2SO4 = 98 g/mol

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.372…

A: The number of moles of hydrogen (H2) gas, nH2, is; nH2=mH2MMH2=1.372 g2.016 g/mol=0.681 mol

Q: How many molecules of C8 H18 would you have if you have 2.51 mol? Report your answer with 3…

A:

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.442…

A:

Q: What is the percent by mass of sugar in pink lemonade if 28 g of sugar is added to 209 g of water?

A: Solution- mass of the solution = 28g density =massvolumevolume = massdensityvolume=209 g1 g/mL=209…

Q: For the formula  K3N  What is the percent Nitrogen in the compound

A: Given, compound K3N Molar mass of K = 39 g/mol Molar mass of N = 14 g/mol

Q: How many millimoles of calcium nitrate contain 4.78 x 1022 formula units of calcium nitrate?

A: Avagadro number gives the number of atoms or molecules present in one mole of the substance. It has…

Q: If a sample of urea, CH4N2O, is 86% pure, what is the percent by mass of nitrogen in this sample…

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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: The percent by mass of iron (III) in Fe₂S3 is %.

A: we have to calculate the mass percentage of Fe(III)

Q: In the compound (NH4)S2, what is the percent composition of hydrogen

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Q: What is the percent (by mass) of oxygen in citric acid, C6H8O7.

A:

Q: A compound contains arsenic and oxygen as its only elements. A 1.626g sample of the compound…

A: A 1.626 g of the sample contain 1.060 g of arsenicSo, Oxygen = (1.626 -1.060)g…

Q: The black powder used to propel a firework into the sky is made up of 64% by mass potassium nitrate…

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.132…

A:

Q: The formula mass of N2O is 44.2 amu. What is the mass in grams of one half mile of N2O

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Q: a 5.000g sample that contained NaCl and BaCl2 *2H2O was heated. After heating the sample had a…

A: Given : Mass of sample of NaCl and BaCl2*2H2O = 5.000 g And mass of sample after heating = 4.688 g

Q: For the compound Glucose ( C6H12O6 ), What is the percent Oxygen in glucose?

A: We need to find the amount of oxygen present in glucose. We will calculate the given problem by…

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: How

A: We will calculate number of anions.

Q: A 78.0-g sample of an unknown compound contains 12.4 g ofhydrogen. What is the percent by mass of…

A: Given: Weight of the compound = 78 g Weight of hydrogen = 12.4 g The calculation of the % by mass is…

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3(Si,0;),(OH), An…

A:

Q: Hi. I am trying to calculate the percent of water in an uknown hydrate. The given data is: mass of…

A: Law of conservation of Mass :- Law of conservation of mass states that mass can neither be created,…

Q: Regular treatment with low dose aspirin is used to help prevent cardiovascular disease. How many…

A: The molecular formula of aspirin is C₉H₈O₄. The number of molecules present in 240 mg of aspirin has…

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3 (Si,O3),(OH), An…

A:

Q: 2. When a 30.98-g sample of phosphorus reacts with oxygen, a 71.00-g sample of phosphorus oxide is…

A: Given: The mass of P=30.98 g Mass of compound, (Phosphorous oxide)=71 g. Mass of oxygen=(71-30.98)…

Q: How many molecules of C8H18C8H18 would you have if you have 2.51 mol? Report your answer with 3…

A: The molecules of C18H18 when you have 2.51 mol, number of molecules is calculated as given below.

Q: A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.102…

A: Given, mass of mixture = 20.00 g Hydrogen gas produced = 1.102 g

Q: Aluminium has a density of 2.70g/cm(cubed). How many moles of aluminum are in a 13.2cm(cubed) block…

A: Given, Density = 2.70 g/cm3 Volume = 13.2cm3

Q: How many picoliters of water are in 3.32 mol of water? The answer must be 5.98 x 10^10 pL H2O how…

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Q: The percent by mass of chlorine in is C,H; Cl %.

A:

Q: The percent by mass of copper(II) in Cu3(PO4)2 is %.

A: Introduction- The mass percent of any element is calculated by the ratio of mass of the element in…

Q: What would you multiply "grams of sodium" by to get the units "moles of sodium"? grams Na x (number)…

A: Element Sodium (Na) The molar mass of sodium Na=23 mole per gram.

Q: A sample of a liquid with a mass of 8.657g was decomposed into its elements and gave 5.217g of…

A: In the laboratory, density can be used to identify an element, while percent composition is used to…

Q: Boric acid, H3BO3 is a mild antiseptic and is often used as an eye was. A sample contains 0.543…

A: Given: the number of moles of boric acid=0.543 mol. Molar mass of boric acid =61.83 g/mol To find:…

Q: We did surgery on a grape and found a sugar compound with the formula C7H11O5 What is the percent…

A: We will calculate percent mass of each element

Q: a chemist determines that 1.26 g of iron reacts with 0.54 g of oxygen to form rust. What is the…

A:

Q: Guanidin, whose chemical formula is given below, is a fertilizer. What is the percent by mass of…

A: Mass percentage or percent by mass can be determined as the mass of component divided by the total…

Q: 1. If you know the chemical formula for the hydrate, how can you predict its expected percent water?…

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Q: What is the percent of NaOH by mass for 120 g of NaOH in 1000 g of water?

A: 120 g of NaOH in 1000 g of water.Mass of the solution is mass of the solute plus mass of the…

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.