What is the mass percent of water in Zn(NO₃)₂･6 H₂O? Provide an answer to one decimal place

Q: Calculate the number of moles of hydrogen ions present in 200 cm ^ 3 of an acid solution that…

A: Given,  Density of H2SO4 in gd/m3 = 24.5 gd/m3  Calculate number of moles of hydrogen ions in 200…

Q: Why does the mass of the pennies change after treatment with:  Zn/NaOH solution Flame of a Bunsen…

A:

Q: Q1/ How many molar masses are contained in 1- 5.76 g of KI ?( Atomic mass K=39, l=127) 2-4.00 liter…

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Q: Which equation below violates the law of conservation of mass? a. 2H2+ O2 –→ 2H2O b. KCl + Br –→ KBr…

A: Law of conservation of mass = It sates that in a chemical reaction no mass is created or destroyed,…

Q: C + 2 H2 ----> 1 CH4 What is molar ratio of C to H2 ?

A: C + 2H2 --> 1CH4

Q: . What is the percent by mass (percent composition) of each element with then the compound magnesium…

A: 1) What is the percent by mass (percent composition) of each element with then the compound…

Q: 4) What is the formal concentration of NaCl (FW 58.44) when 32.0 g are dissolved in water and…

A: Formal concentration = moles of NaCl ÷ volume of solution in L

Q: 1. PPH3 2. nBuLi Br 3. H. 1. LDA 2. 3. НаО, н* NABH4 МеОн H3CSH

A:

Q: What is the number of molecules in 319g of Li2SO4? (Take NA = 6

A: Mass of Li2SO4 = 319 g  NA = 6 x 1023 .  Number of Molecules = ?

Q: molecular-level pictures of the following: a: NaCl b: CuCl2.2H2O(aq) c: NH4Cl(aq) d: Al2O3(aq)

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Q: OH 0 °C OR Pd(PPH3)2, OH

A: In the first reaction, Alcohol Converted into an Alkene that means this reaction is Dehydration…

Q: How many significant figures should your answer have? 8.101 + 0.10 = O 1 O 2 O 3 O 4 O 5 O 6 O 8

A: In addition, significant figure of answer will be equal to less significant figure in all given…

Q: In the equation below what is the mole ratio between Na2SO4 and H2O? 2 NaOH (aq) + H2SO4(aq) → 2 H2O…

A: Given reaction: 2 NaOH(aq)+ H2SO4(aq)→2 H2O(l) + Na2SO4(aq) To find: The mole ratio between Na2SO4…

Q: What is the number of molecules in 319g of Li2SO4? (Take NA = 6 x1023)

A: The question is based on mole concept. We have  to determine number of molecules present in the…

Q: What is the NH3 (in mg/L) of household ammonia that contains 3% by weight of NH3?

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Q: How many grams of aspirin should be used to prepare 1.255 kg of the powder? Aspirin 6 parts…

A: Given;

Q: What is the mass percent of the anhydrous salt in Na,CO3 10 H;O? Provide an answer to one decimal…

A: The mass percent of the anhydrous salt is calculated using the following formula: mass percent of…

Q: what is the mass of the anhydrous compund?

A:

Q: The density of water is 1.00 g/mL at 4°C.How many water molecules are present in 2.36 mL of water at…

A: given density of water = 1 g/ml

Q: 1.) What is the molecular formula of a compound with the empirical formula CH and a formula mass of…

A: 1 since ,          Empirical formula = CH therefore , Empirical formula mass = 12+1=13  amusince ,…

Q: CHaig) 7. Cj + 2 H2g) 8. 4 HCl(aq) + Ozig) 2 HаО + 2 Clz)

A: The Equilibrium constant of the reaction is the ratio Concentration of the product to the…

Q: 2Q. The volatile and non-electrolyte substance contains 40% C, 6.7% H and 53.3% O. An aqueous…

A: Given,  The volatile and non-electrolyte contains 40% C, 6.7% H and 53.3% O. The solution contain 5%…

Q: What is the mass percentage of C in caffeine, C₈H₁₀N₄O₂? Provide an answer to two decimal places.

A: Mass percentage of an element in a molecule is calculated by using the formula Mass % of element = n…

Q: Determine the formula weight of Ca(NO₃)₂. Provide an answer to two decimal places.

A: Chemical formula =>  Ca(NO₃)₂ and it is called as calcium nitrate. Ca(NO₃)₂ contains 1 calcium…

Q: There are more molecules of H2O in a cup of water there are cups of water in the entire ??

A: Water has a molecular weight of 18 (with some approximation), which gives it a molar weight of 18…

Q: For each pair of molecules given in the table below, identify the correct relationship. # 1 OH OH #…

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

Q: 1. Na2Cr207 2. OH 3. Pd/C, H2 OH OH OH Он Он он

A: We will write the correct product of the reaction

Q: How much zinc oxide powder should you add to 2 oz (AV) of 5% zinc oxide (Zno) ointment to make a 10%…

A: We will calculate amount of ZnO in 5% ointment , then calculate amount of ZnO added to it to make it…

Q: What is the mass percentage of S in hydrochlorothiazide, C₇H₈ClN₃O₄S₂? Provide an answer to two…

A: The percent mass of S in given compound is determined by using following expression. %S=Molar mass…

Q: I2 is in c8h18

A: Polar solutes dissolve in polar solvents and non-polar solutes dissolves in non-polar solvents.

Q: What is the percent of carbon in the pesticide DDT (C14H9Cl5) ? The molar mass of C14H9Cl5 is 354.5…

A: The given data: The chemical formula for DDT = C14H9Cl5 The molar mass of DDT = 354.5 g/mol To…

Q: Calculate the mass of bromide from 12.9 g of sodium bromide. Group of answer choices 6.02 g 16.6 g…

A:

Q: Find the mass percent of water in CuSO45H2O.

A: The molecular formula of copper sulfate states that one molecule of copper sulfate contains five…

Q: What is the concentration of a 62.0 % (w/w) concentrated nitric acid (HNO3, Mr = 63.0 g/mol)…

A: Given: % (w/w) of HNO3 = 62.0 % Density of solution = 1.32 g/cm3 = 1.32 g/mL…

Q: Cl2 + NaBr NaCl + BE ->

A:

Q: BaCl2٠2H2O What is the mass salt?  What is the mass water?  What is the mass percent?

A: Ans

Q: Calculate the number of grams of sodium in 7.5 g of each of the following sodium-containing food…

A: The number of moles of a species is calculated by expression (1) in which n is the number of moles,…

Q: water. 0.10 M Na3PO4.

A: Solubility is the maximum amount of solute which can be dissolved in specified amount of…

Q: Draw the products formed in each reaction sequence.

A:

Q: -OH A. HCl На B H Br 2 C. SOU ₂ D. POCI₂ CI t

A: The above reaction is a transformation of alcohol to haloalkane( here chloroalkane). The reaction is…

Q: Calculate the molar mass of a table sugar (C12H22O11). (2) 2. Calculate the molar mass of Ozone…

A:

Q: wakr Vapor content Belatie hmidity 15°C 15°C 15°C गमण्य गनु

A: Humidity is the concentration of water vapour present in the air. Relative humidity is the…

Q: Given these molecular weights of only nonpolar and non-ionic molecules consisting of only hydrogen…

A: Melting point is directly proportional to number of the carbon atoms. Longer the carbon chain higher…

Q: What is the mass percent of carbon in isopropyl alcohol, C3H8O? Group of answer choices 40.0% 60.0%…

A: The mass percent of carbon in isopropyl alcohol has to be given.

Q: 15. Citric acid, C6H807 (aq), is often used as an additive to make candies "sour." a. Draw a…

A:

Q: What is the relationship between the two figures below? Fig. 1 of 2 CI OH H,C CH3 Fig. 2 of 2 OH CI…

A:

Q: An organic compound is found to have an Empirical formula of C5H3O2 and a molecular weight (or molar…

A:

Q: A chemical compound has 53.657% C, 3.081% H, and rest of oxygen. Find the empirical formula of the…

A: GIVEN: %C = 53.657 % % H =3.081 % Vapor density = 850.6 amu To calculate: Molecular formula

Q: How many moles are in 18.5 g helium? Select one: a. none of these b. 4.62 mol c. 0.894 mol d. 4.63…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…