Find the mass of table salt (NaCl) containing 3.7 grams of Na. NaCl is 39% Na.

Q: Q1. Complete the following table. Formula Name Glucose Potassium sulfate Calcium phosphate C6H12O6…

A: Complete the following table,NameFormula No. Of atoms of each element represented in the formulaMass…

Q: A sample of C₂ H₂ has 4.40 × 1024 H atoms. How many carbon atoms does the sample contain? number of…

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Q: What is the importance of making molecular models

A: Sub-atomic models are the actual models used to address particles in space. It addresses atoms in an…

Q: It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the…

A: Given: Mass of Ca(NO3)2 hydrate=45.21 g Remaining mass of anhydrous compound=31.41 g

Q: In this station, you will find a 100 mL graduated cylinder that contains about 35 mL of water. How…

A:

Q: Consider two compounds. Compound A contains 15.7 g of sulfur and 18.6 of fluorine. Compound B…

A: Mass of fluorine in compound A = 18.6 g Mass of sulfur in compound A = 15.7 g Mass ratio of fluorine…

Q: Which of the following would contain the highest number of atoms?

A: Number of moles = mass/molar mass.  1 mol contains 6.022 × 1023 atoms

Q: Martha sees a vile in her chemistry lab with the label C6H5O7. Her professor tells her it is…

A: Given formula: C6H5O7

Q: 2. Which compound (C12H22011 or NH,CI )contains the most total number of atoms?

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Q: Identify the choice that best completes the statement or answers the question. Analysis of a…

A: According to law of constant proportion, the ratio of mass of elements in any fixed compound will…

Q: 1. Na + Clz -NaCl *Circle each reactant and box each product in the equation. # of Is the Reactant…

A: We are given the following reaction: Na+Cl2→NaCl

Q: Calculate the total number of N atoms in 23.8 g N2O5. O 2.65 x 1023 total N atoms O 9.31 x1023 total…

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Q: Calculate the mass percent of Cu in CuCl2. (Mass of Cu= 63.55 g and Cl= 35.5 g) ii) Calculate the…

A: Mass percent is the percent ratio of mass of element in the compound to the total mass of the…

Q: Lithium carbonate, Li2CO3, contains 18.8 % lithium and is used in the treatment of mental illnesses…

A: Given : mass percent of lithium in Li2CO3 = 18.8 %. And mass of Li2CO3 sample = 1.48 g

Q: dimethyl sulfoxide (CH3)2SO, also called DMSO. Calculate the number of C,S,H, and O atoms in…

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

Q: A student solved the following question incorrectly: How many NO2 molecules are there in 72.0 g NO2…

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Q: A sample of water, H2O, has a mass of 57.2557.25 g. Calculate the number of water molecules in the…

A: we know that, 1 mole=6.023 x 10^23 molecules  1 mole= molar mass of any compound. molar mass of…

Q: How many grams of CH3CO2C5H11 must be weighed out to provide 3.22 x 1023 atoms of H? When you input…

A: Mole in terms of particles : 1 mol = 6.022 x1023 particles  where particles =…

Q: How many grams of Pb2+ are presented in 2.65 grams of lead (II) nitrate?  How many grams of lead…

A: a) Pb2+ are presented in 2.65 grams of lead (II) nitrate = 1.66 gram b) grams of lead (II) nitrate…

Q: a certain compound contains 54.0 g or carbon and 10.5g of hydrogen. its relative molecular mass is…

A: Given,54.0 g of carbon and 10.5g of hydrogen.The molar mass of this compound is 86 g/mol.Molar mass…

Q: Does each chemical formula represent an element or a compound? a. H 2 b. H 2O 2 c. S 8 d. Na 2CO 3…

A: An element is made up of same type of atom whereas a compound is made up of more than 1 type of…

Q: Heavy water is produced by using the rare isotope deuterium, Nwhich hydrogen-2 (H) replaces the…

A: Given,

Q: Co(NO3)2

A: a) First find out the moles of Co(NO3)2 :  moles = ( formula unit / Avogadro number )  Moles = (…

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

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

Q: You have 10.0 g each of Na, C, Pb, Cu and Ne. Which contains the largest number of atoms? Na C Pb Cu…

A:

Q: Calculate the mass percent of 2.50 moles of NaOH in 0.900 L of water at 25 C (degrees Celsius) (the…

A: Given: moles of NaOH = 2.50 mol Volume of water = 0.900 L                            =900 mL…

Q: a. What is the mass in grams of 3.83 x 1023 atoms of lead? grams b. How many lead atoms are there in…

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Q: How many grams of CCl4 will contain 36.00 g of carbon? express your answer in decimal notation.

A: Mole of carbon tetrachloride is equal to mole of carbon

Q: How many molecules are there in (4.87*10^ ^ 2) g CCl 4 ? Answer to 3 significant figures. Note: Your…

A:

Q: need

A: First Calculate the mass of Al :  Mass of Al = Density • volume  Mass of Al = 2.70gcm-3 • 13.2cm3…

Q: a 12.5 g sample of a hydrate of calcium chloride is found to contain 3.06g of water. What is the…

A: Given: The mass of the hydrate of calcium chloride = 12.5 g The amount of water in the sample = 3.06…

Q: Convert the following percentages to proportions: 74.9%, .2%, 5.1%.

A: To solve this problem we will calculate the proportion of given percentage .

Q: 4 Part A Percent composition refers to the mass percent of each element in a compound mass percent ×…

A: Part A)To calculate the percent composition by mass of the hydrocarbon C7​H16​, we first need to…

Q: Portland cement contains 61 % calcium oxide. Calculate the mass of calcium oxide and the mass of the…

A: One ton is equal to 907.185 kgs.The conversion factor is  (1ton/907.185 kgs )  or  (907.185…

Q: Analysis of a 20.0 g sample of pure carbon dioxide shows that it contains 5.46 g of carbon. How many…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: The active ingredient in a Tylenol pill is 325 mg of acetaminophen (C8H9NO2) . Find the number of…

A: Since molar mass of acetaminophen = Atomic mass of C X 8 + Atomic mass of H X 9 + Atomic mass of N X…

Q: A 22.55 g sample of alum is heated in an oven to drive off all the water from the solid. Determine…

A: Answer

Q: The element X forms the oxide X,06. This oxide contains 57.52% oxygen by mass. Identify X by…

A: Mass of compound can be converted to moles using molar mass. Mole = MassMolar mass Given data:…

Q: Part 1 of 2 Rank these compounds in order of increasing boiling point. O O OH OH (Choose one) 1…

A: The temperature at which the vapor pressure of a liquid becomes equal to the atmospheric pressure is…

Q: An analytical chemist measures the amount of Elements E₁ 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 sample of ammonia (NH3) has a mass of 84.7 g. How many molecules are in this sample?

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Q: Calculate the mass in grams of 2.84 x 1024 molecules of methanol. The chemical formula for methanol…

A: Given  Number of molecules of methanol = 2.84 × 1024 molecules  Chemical Formula of methanol      =…

Q: None

A: For clear computation, please refer to this:This is solved using calculator. Answers presented are…

Q: 4. Determine the number of H atoms in 8.50 g of water.

A: As per your indication we solved the 4th question. Please find the below attachment

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

A: •Given:-

Q: Determine the volume of a carbon sample that contains 2.40 x 1024 atoms and a density of 0.968g/cm3

A: We have given that  No.of atom of carbon = 2.40 × 1024 atom  Density of sample = 0.968g/cm3  Find…