An anhydrous (water removed) salt has a formula mass of 159.265 g/mol. If the hydrated version of the salt has 5 mol of water associated with it, what is the mass % of water in the hydrated salt? Report your answer to three digits after the decimal.

Q: The percent copper in an unknown copper compound is 21.60 %. What is the formula weight of the…

A: Given,percentage of Cu=21.60%Molar mass of Cu=63.5g/mol

Q: b) In a second experiment to verify the value of x, the pharmacist heated a 3.752g sample of the…

A: Given, mass of sample of lysine hydrate =3.752 g mass of sample after heating =  3.278 g

Q: The mass of 4.375 x 1016 molecules of compound with the molecular formula C3H9N is ______ g. Report…

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Q: A chemist adds 335.0 mL of a 1.0 x 10 chemist has added to the flask. Be sure your answer has the…

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Q: What is the molar mass of cholesterol if 0.00105 mol weighs 0.406 g? Express your answer using three…

A: The general formula required to calculated molar mass from moles and mass is as follows,…

Q: Ising your khowledge of mole calculations and unit conversions, determine how many atoms there are…

A: Given: The volume of petrol, (V) = 1 L = 1000 mL The density of petrol, (d) = 0.85 g/mL The…

Q: Assume that the molar mass of A is 82.93 grams per mole and the molar mass of E is 24.61 grams per…

A: Atoms are the smallest unit of the matter, anything which occupies space and has mass is known as…

Q: What is the percentage of oxygen in a 500 g sample of potassium sulfate? Report your answer to the…

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Q: A chemist has two different gasohol mixtures available. One contains 20% alcohol and the other 12%…

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Q: . Household sugar, sucrose, has the molecular formula C12H22011. What is the %, by mass, of carbon…

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Q: How many moles of NaOH are in 8.2x10^27 formula units of NaOH? Round your answer to the 1 decimal…

A: To calculate the number of moles of NaOH are in 8.2x10^27 formula units of NaOH.

Q: On 12 and 13 I got a negative scientific on one and a positive on the other. Did I make a mistake…

A: General chemistry12. The number of atoms or molecules in a mole of any substance is equal to…

Q: The chemical formula for diethyl amine is: (CH,CH,),NH Calculate the molar mass of diethyl amine.…

A: To calculate the molar mass of diethylamine.

Q: in a pure sample of blue vitriol, the Cu content is 25.45%. what is the percentage of water?

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Q: percent mass

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Q: How many moles of tin atoms are in a pure tin cup with a mass of 31.7 g ? Express your answer in…

A: Molar mass of tin=118.71g/mol Given mass of tin=31.7g No. Of moles= given mass/molar mass…

Q: How many C atoms are present in 8.94 · 1020 CH3C(O)H molecules? Express your answer in scientific…

A: Scientific notation is way to express the numbers that are too big or small to be written…

Q: Calculate the number of hydrogen atoms in a 150.0 g sample of ammonia (NH,). Be sure your answer has…

A: Given, Mass of sample of ammonia (NH3) = 150.0 g Number of hydrogen atoms in a 150.0 g sample of…

Q: Commercial solvents are commonly sold in 55-gallon drums. What is the weight in pound of the carbon…

A: Volume of the solvent = 55 gallon Volume of solvent in cc = 208198 cm3 (since 1 gallon = 3785.41…

Q: Calculate the number of phosphorus atoms in a 130.0 g sample of diphosphorus pentoxide (P,05). Be…

A: Diphosphorus pentoxide (P2O5) is an oxide of phosphorous that has 2 atoms of phosphorous and 5 atoms…

Q: A titanium ore contains rutile (TiO2) plus some oxides of iron and silica. When it is heated with…

A: Reaction: TiO2 + C + Cl2 ---> TiCl4 + Cl2 molecular mass of TiO2 = 79.866 g/mol molecular mass of…

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: 3. A 5-peso coin was placed on top of a watch glass and their mass was recorded as 45.68 g. The mass…

A: Initially, mass = 45.68 g Empty watch glass mass = 39.86 g

Q: 1.)If 5.00g of iron (III) chloride hexahydrate us completely dehydrated, he many grams of anhydrous…

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

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Q: How many C atoms are present in the sample of C3H8 with mass 7.11 g? Avogadro's number is 6.022 x…

A: Given : Mass of C3H8 = 7.11 g

Q: High fructose corn syrup (HFCS) is a sweetener that was designed in the 1970s, which takes corn…

A: Given, Amount of HFCS used = 67.5 g Percentage of fructose molecules =55.1 % Percentage of glucose…

Q: A chemist prepares a solution of zinc nitrate (Zn(NO3),) by measuring out 40.7 umol of zinc nitrate…

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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: How many formula units are in 30.912 g of potassium permanganate? Give answer to the correct number…

A: A numerical problem based on formula unit, which is to be accomplished.

Q: Ammonium phosphate (NH,),PO,) is an important ingredient in many solid fertilizers. It can be made…

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

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Q: A student begins this experiment with 3.5251 g of mixture. After sublimating the NH4Cl, the student…

A: The exact value that the student obtains is :

Q: Borax (boron), Na2B4O7.10H2O (Sodium tetraborate decahydrate, the 10 in front of the water means…

A: Given, Borax (boron), Na2B4O7.10H2O

Q: Find the percentage by mass of Cl in CaCl2 if it is 36.1% Ca by mass. (Round your answer to one…

A: (1) The percentage by mass of Cl is 63.8% in CaCl2 if it is 36.1% Ca by mass.      (2) the…

Q: What is the mass in grams for a 50 mL and 100 mL beaker Then calculate the mass of Calcium chloride…

A: mass in gram of 50 ml and 100 ml beaker

Q: 2. Calculate the constituents below in units of mass per volume. Give your answers in the most…

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Q: a) The concentration of orciprenaline in the diluted solution in mg/L Calculate the answer by read…

A: Answer is as follows

Q: In doing the chemical formula experiment, the mass of original sample of compound was 2.438 g, and…

A: Mass of original sample = Mass of copper in it + Mass of chlorine in it

Q: What is the maximum mass of pure titanium that could be extracted from 3.0 kg of ilmenite, a…

A: The molecular formula of ilmenite is = FeTiO3 The mass of ilmenite is = 3.0 kg The mass of titanium…

Q: Rearrange these terms to solve for mass (m).

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Q: an equation showing how the mass of the substance on the right column can be converted to the mass…

A: Mole of a substance = mass of a substance / molar mass of substance Mass of substance = mole of a…

Q: If a water sample has 0.07 mol of calcium ions in 15 L solution, what is the water hardness level in…

A: Given moles of calcium = 0.07 moles Volume of solution = 15 L

Q: 1. CuSO4 a. copper(I) sulfate b. copper sulfate c. copper(II) sulfate d. copper sulphide 2. Nal a.…

A: (1) Copper is a d block element, which is also known as transition element. It has atomic number of…

Q: The chemical formula for beryllium sulfide is BeS. A chemist determined by measurements that 0.070…

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Q: Ammonlum phosphate ((NH,),PO, Is an Important Ingredient In many fertilizers. It can be made by…

A: Given: Mass of phosphoric acid: 6.45 g To Calculate: Mass of ammonium phosphate produced

Q: Calculate each of the following for the hydrated 'compound': MgsAla(P3Se7)3-6H2O NA = 6.022 x 1023…

A: The compound given is Mg5Al4(P3Se7)3.6H2O. Each molecule of compound contains, 1) 5 atoms of Mg 2) 4…

Q: Glass A contains 2 liters of alcohol, and the rest is water. Glass B contains 2 liters of 40%…

A: Given: Glass A has 2 L of alcohol. Glass B has a total of 2 L solution with 40 % alcohol. And glass…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.