9.44 % NaCl by mass Express your answer using two significant figures. ΑΣφ ? Submit Request Answer Provide Feedback

Q: How many carbon atoms are there in a diamond (pure carbon) with a mass of 48 mg ? Express your…

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Q: Calculate the molecular mass (in u) of aniline, C6H₂N to 4 significant figures. Answer:

A: The molecular mass of a substance is the relative mass of its molecule as compared to the mass of…

Q: Calculate the molar mass of Pb(NO3)2 and PbI₂ by adding element masses from the periodic table. Show…

A: The calculation of the molar masses of Pb(NO3)2 and PbI2-a. Pb(NO3)2: The molar mass of Pb(NO3)2 is…

Q: Be sure to answer all parts. Calculate the percentage composition by mass of each of the elements in…

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Q: What is the formula mass of Mg(NO3)2? Express your answer to four significant figures and include…

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Q: How many molecules are contained in 19.3 g of H2SO4 (Given atomic masses: H 1.01, S = 32.06, O =…

A: The objective of this question is to calculate the number of molecules in a given mass of a…

Q: A Moving to the next question prevents changes to this answer. Question 1 The combustion of ammonia…

A: 4NH3(g) + 7O2(g) .....> 4NO2(g) + 6H2O(g)  Molar mass of ammonia =  Molar mass of (N + 3(H)) =…

Q: Run 2: Initial grams of NaHCO3 %3D

A: The balanced chemical equation has the number of atoms of the reactants becomes equal to the atom…

Q: Liquid hexane (CH₂(CH₂) CH₂) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide…

A: The objective of this question is to calculate the percent yield of water in the reaction of hexane…

Q: Be sure to answer all parts. What is the mass in grams of 5.82 x 109 molecules of the pain reliever…

A: Given molecules of ibuprofen = 5.82 × 1019  Molar mass of ibuprofen = 206.3 g/mol

Q: How many molecules are contained in 19.3 g of H2SO4 (Given atomic masses: H 1.01, S = 32.06, O =…

A: Step 1: To find the number of molecules in 19.3 g of H2​SO4​, we need to follow these…

Q: With the following data determine the % composition of KNO3 in the unknown sample: Initial Mass of…

A: The question is based on experimental chemistry. We need to calculate percentage potassium nitrate…

Q: Classify these substances as molecular or ionic. Molecular Ionic Answer Bank calcium oxide, CaO…

A: Given: Some Compounds are given  To find: which compounds are ionic and which are covalent…

Q: Using dimensional analysis, convert 78 grams of Carbon into moles. (1 mol = molar mass of…

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Q: PID "6A3919 2. Show the calculation for the number of atoms of copper contained in 0.0000282 grams…

A: Since you have posted a question with multiple sub-parts ,we will solve first three sub-parts for…

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: A sample containing NaCl, Na₂SO4, and NaNO3 gives the following elemental analysis: Na: 35.875…

A: Answer:In this mass percent of elements in a sample is given to us and we have to find out the mass…

Q: Please check my work. Analyze the data for the sample to get the Empirical formula of CxHy Given…

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Q: Calculate the mass percent composition of each of the following Part A. 6.00 g of Si and 5.55 g of O…

A: Mass percentage can be calculated using the following formula: mass percent=masstotal mass×100

Q: Part A The American Dental Association recommends that an adult female should consume 3.0 mg of…

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Q: Classify each chemical compound listed in the table below. compound H₂PO4 HCIO Ba(OH)2 Mg(CIO) 2…

A: The compounds which are formed by the complete transfer of electron between the two atoms is called…

Q: 6.9 g H2O Express your answer using two significant figures. ΑΣΦ ? Ni = Submit Previous Answers…

A: Moles: It is one of the fundamental unit that is used to define amount of substance. It can be…

Q: Be sure to answer all parts. How many molecules of ethane (C,H) are present in 0.413 g of C,Hg? x…

A: The molar mass of ethane is,

Q: Chemical Formulas as Formulas: Converting between Grams of a Compound and Gram of a Constituent…

A: First convert given mass in kg  into grams .

Q: How many moles of sodium chloride (NaCl) are in (7.89x10^-41) molecules of sodium chloride (NaCl)?…

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Q: How many moles of carbon dioxide can be produced from the complete combustion of 8.67 moles of…

A: Given :- number of moles of C2H6 = 8.67 mol  To calculate :- number of moles of CO2

Q: ▼ Number of moles (n) of NH4Cl in 96.6 g of this substance. Express the amount in moles to three…

A: 1 moles of a substance contains 6.023×1023 molecules of that substance.

Q: Liquid hexane (CH₂(CH₂) CH₂) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide…

A: The objective of this question is to calculate the percent yield of water in the reaction of hexane…

Q: Liquid hexane (CH₂(CH₂) CH₂) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide…

A: The objective of this question is to calculate the percent yield of water from the reaction of…

Q: Calculate the molecular mass, in g/mol, of iron (II) sulfate heptahydrate. Show your work.

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

Q: What is the mass percent of phosphorus in P5O2?

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Q: The following prompt will be used to answer the first six questions. An experiment was performed to…

A: Given :

Q: b. U.00004042 fng 4.042 x 10-5 mg Which sample of element is heavier? Show appropriate calculations…

A: Given: The moles of N2 = 2 moles. The moles of Fe = 1 mol. The moles of F2  = 1.5 moles.

Q: A 3.9 g of KCr(SO4)2.12H₂0 was heated until reach a constant mass. Calculate the mass in grams of…

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Q: Hydrates have the general formula: CxAy•z H₂O where z designates the number of water molecules in…

A: Hydrates have the general formula:CxAy.zH₂Owhere z designates the number of water molecules in one…

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

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Q: Calculate the number of boron atoms in a 50.0g sample of tetraborane B4H10.   Be sure your answer…

A: Given that,  Weight of tetraborane, B4H10 = 50.0 g Molar mass of tetraborane, B4H10 = 53.32 g Moles…

Q: What is the percent composition by mass of carbon in propane, C₂H? (Round your answer to the tenths…

A: (1) percent composition by mass of carbon =  81.7 % C (2) percent composition  by mass of hydrogen =…

Q: What is the mass in milligrams of 4.30 moles of sodium? Use significant figures.

A: moles is defined as amount of substance that has 6.023 x 10^23 number of atoms in it. The formula of…

Q: Perform each of the following calculations.  You must show your work to receive credit and must must…

A: Number of moles is calculated by dividing the given mass with molecular mass.

Q: Chlorophyll is a dark green plant pigment. Express your answer using two decimal places. Calculate…

A: We know that:Atomic mass of corbon = 12gAtomic mass of hydrogen = 1gAtomic mass of Magnesium =…

Q: Determine the quantity of moles in 4.21 x 1023 formula units of CaCl₂

A: The formula to calculate moles from formula units is :=> moles = number of formula units x ( 1…

Q: Run 2: Initial grams o

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

Q: • 20 grams of nitrogen reacted with 2.5 moles of hydrogen to form ammonia (NH3) gas. What is the…

A: First we will determine the limiting reagent. Limiting reagent is that substance which is present in…

Q: 1. Calculate the molecular mass, in g/mol, of iron (II) sulfate heptahydrate. work. 2. Adipic acid…

A: we have to find molar mass of the given compound

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.