What is the formula mass of Mg(NO3)2? Express your answer to four significant figures and include the appropriate unit. Value Units Submit Request Answer Part B Calculate the formula mass of ethanol, C2H5OH Express your answer to three significant figures and include the appropriate units. HA ? Value Units Submit Request Answer

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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)) =…

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

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A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. thus,

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: A chemist adds 110.0 mL of a 1.78 M nickel(II) chloride (NiCl2) solution to a reaction flask.…

A: Molarity of the solution can be calculated by using Following formula - Molarity = mass×1000/molar…

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Q: How many grams of water are produced from the complete reaction of 80.0 g of O2 ? Express your…

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Q: Express each result in correct number of significant figures and with correct unit.   3 Mg (s)  +…

A: The balanced chemical equation, 3 Mg + N2 → Mg3N2 Actual value = 97 g Theoretical yield = 139 g To…

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A: Write the molecular name and acid name of the given  molecular formula---

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

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Q: A chemist adds 205.0 mL of a 2.74 mol/L iron (II) bromide (FeBr₂) solution to a reaction flask.…

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Q: Question 8 There are O 129, 129, 129 O 129, 129, 75 O 54, 75, 129 O 54, 54, 75 O 75, 54, 54 O 54,…

A: According to the answering guidelines, I'm posting the solution for the first question. Kindly post…

Q: What is the mass in grams of 4.57 × 10²⁵ molecules of Cl₂? I get the write and but the wrong number…

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A: In gravimetric analysis, the P in P2O5 is precipitated according to the below reaction. HPO42-(aq) +…

Q: ADD FACTOR *( ) ANSWER RESET > 1 6.99 110.98 4.21 x 1023 75.53 0.699 6.022 x 1023 77.6 3.79 × 1021 g…

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

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Q: What are the correct coefficients for the chemical equation: _Mg+_HCl->_MgCl2+_H2? 1, 2, 1, 1 2, 7,…

A: To get the coefficients for chemical reaction we have to balance the equation.

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Q: Check your mass calculation. Check your moles calculation. Check your AHneutralization Calculation.…

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

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

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Q: What would be the mass, in grams, of just 100 water (H2O) molecules? Group of answer choices 1.66 x…

A: Avogadro number: The no. of particles present in one mole of any substance is 6.022 ×10-23. it is…

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A: Atomic mass of S = 32.06 g/mol Atomic mass of C= 12.01 g/mol Molecular mass of CS2 = 12.01 +…

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…

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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: Liquid octane (CH₂( (CH₂(CH₂) CH₂) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon…

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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 =…

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.