How much zinc oxide powder should you add to 2 oz (AV) of 5% zinc oxide (Zno) ointment to make a 10% Zno ointment? O a. 95 g O b.3.15 g OC 2.84 g O d.3.46 g O e. 1.6 g

Q: How many moles of sodium are contained in 99.6 g of Na 2SO 3? 1.43 x 1024 moles Na 0.790 moles Na…

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Q: How many moles are contained in each number of grams of fructose (C 6H 12O 6, molar mass 180.2…

A: The given information is: The chemical formula of fructose = C6H12O6 Molar mass of fructose = 180.2…

Q: How many moles of H2 gas can be formed from 0.389 grams of Mg? Mg(s)+2HCl(aq)⟶H2(g)+MgCl2(aq)

A: From the given balanced equation, 1 mole of Mg gives 1 mole of H2 gas. The molecular weight of Mg…

Q: 2. Write the balanced chemical equation between Mg(s) and HC1(ag). Mg + 2HCI = MgCl, + H2 3. Find…

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Q: How many grams of water could be made from 5.0 mol H2 and 3.0 mol 02? Select one: a. 42 g b. 90. g…

A: Hydrogen gas + Oxygen gas = Water  H2 (g) + O2 (g) --> H2O (g)

Q: 8. A sample of a compound contains 15.60 g Mg and 10.27 g O. How many g Mg are in another sample of…

A: In the sample of magnesium oxide the amount of magnesium and oxygen is as follows: Mass of Mg =…

Q: How many kilojoules of energy will be needed to decompose 13.5 grams of N2O5 gas? (MM N2O5= 108.02…

A: Given, 2N2O5(g) ⟶ 4NO2(g) + O2(g)  ΔH = 110 kJ/mol Mass of N2O5 gas decomposes = 13.5 g Molar mass…

Q: How much UF6 can be produced from 740.5 g of UO2? * 104.1 g UF6

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Q: A 2.00 g sample of an organic compound contains 0.675 g of carbon. How much carbon would a 4.00 g…

A: ◼️ Given that:  2.00 g of organic sample has 0.675 g Carbon  Carbon in 4.00 g of same organic…

Q: Iron (III) sulfate, FeSO4, is prescribed for the treatment of anemia. How many moles of FeSO4 are…

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Q: According to the scheme below, How much energy is required to evaporate 54.06 g water (Molecular…

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Q: alance the chemical equation given below, and determine the number of grams of MgO are needed to…

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Q: What are the balanced chemical equations for the following? 1. Pb(NO3)2 & KI 2. Pb(NO3)2 & Na3PO4 3.…

A: When the number of the different atoms of elements in the reactants side are equal to that of the…

Q: Citric acid, CH,O,, is found in many fruits How many H atoms are contained in 0.1g of citric acia…

A: Given : Mass of citric acid = 0.1 g

Q: How many moles of NO2 would be required to produce 5.63 moles of HNO3 in the presence of excess…

A: Balanced reaction : 3NO2(g) + H2O(l) ...> 2HNO3(g) + NO(g)  Moles of HNO3 produced = 5.63 moles

Q: Water is fluoridated to prevent tooth decay. (a) How many liters of 1.0 M H2SiF6 should be added to…

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Q: The molecular formula of a citric acid molecule CeHs.Or. What is the percent of carbon in the…

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Q: Percent Composition and Molecular Formula Worksheet 1. Calculate the percent of nitrogen in urea,…

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

Q: what is the mole ratio between aluminum oxide and oxygen gas? 2Al2O3->4Al+3O2

A: The balanced chemical equation of ten above reaction ; 2Al2O3  --->   4Al + 3O2   From this above…

Q: How many moles of atoms are present in 154 g of HCl?   A) 4.22 mol B) 8.45 mol C) 0.0270 mol D) 2.00…

A: Given  Mass of HCl = 154 gram  Number of mole of atom = ?

Q: Calculate the number of moles of MgSO4 in 10.0 g of this compound.

A: Molar Mass is defined as the mass of the substance present in one mole. Mole is the chemical unit…

Q: Choose the correct concentrations of 48 mg/L CO2 and 27 mg/L Mg²* in mg/L as CACO3 O 155 and 89 mg/L…

A: Given data : CO2 = 48 mg/L Mg2+ = 27 mg/L

Q: How many grams of hydrogen are needed to produce 1.12 g of water according to this equation? 2 H2 +…

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Q: For items 5 and 6: 5. What is the mole ratio of 3NO2 to 2HNO3? 3NO2 + H2O → 2HNO3 + NO 6. What is…

A: Stoichiometric relation help in finding the relationship between the quantity of reactant and…

Q: The number of moles of CO2 in 3.40 L of CO2 gas

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Q: How many moles are present in 25.8 g of H2CO3? O 0.416 mole O 1.208 mol O 0.625 mol O 0.948 mole

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Q: Calculate number of moles in 2.71 g of CCl4

A: Given: Mass of CCl4=2.71 g Moles of CCl4=?

Q: 0.5000 g sample containing NaCl (58.44 g/mol), BaCl2 (208.23 g/mol), and 11.56% by mass of…

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Q: Calculate the molar mass of a volatile liquid whose mass is 0.46 g. The mass is obtained after a…

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Q: Having one mole of carbon suboxide (C203) means that you have O 6.022x1023moles of carbon. O 1…

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

Q: 3. How many grams are in 2.35 moles of calcium phosphate, Ca3(PO3)2?

A: Given - - > No of moles of Ca3(PO3)2= 2.35 mol We know that,  Molar mass of Ca3(PO3)2 = 278.1779…

Q: 2 Na + Cl2 --> 2 NaCl What is the mole ratio of sodium to sodium chloride? a.  2:1 b.  2:2 c.…

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Q: Calculate the number of grams in each of the following ? A. 4X2S 810-4 mol H2SO4 B.4.5x 1022…

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Q: many

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Q: 67: How many grams of Cl are in 38.0 g of each sample of chlorofluorocarbons (CFCS)? CF2CI2, CFCI3,…

A: Question 67. Given that, there are four different chlorofluorocarbons (CFCs) as as follows --- i)…

Q: A pharmacist adds 1 pint of Alcohol USP (95% ethanol) to a 1L of a mouthwash formula. What is the…

A: Given, A pharmacist adds 1 pint of Alcohol USP (95% ethanol) to a 1L of a mouthwash formula.if the…

Q: 3. Determine the grams of H20 produced if you started with 33.2 g Mg(OH)2. Mg(OH)2 + 2HCI → MgCl2 +…

A: Consider the balanced chemical equation. Draw the relationship between the required reactant and the…

Q: How many grams of water are required to form 95.0 g of HNO3? Assume that there is excess NO2…

A: A question based on mole concept, which is to be accomplished.

Q: How many kL does a 1.25 × 10° cL sample contain? O 1.25 × 1013 KL O 1.25 × 104 kL 1.25 x 102 kL O…

A: The given physical quantities can be converted into other physical quantities by knowing the…

Q: How many moles of Hg can be made from 16 grams of Hg? 2HgO(s) = 2Hg(l) + O2(g)

A: HgO, decompose into Hg and O2. The balanced chemical reaction is as follows: 2HgO(s) → 2Hg(l) +…

Q: How many moles of calcium chloride would be necessary to prepare 94.0 g of calcium phosphate? 6.…

A: 6. The given reaction is : 3CaCl2(aq)  +  2Na3PO4(aq)  →  Ca3(PO4)2(s)  +  6NaCl(aq) The mass of…

Q: 2 Al + 3 H,SO, 6. How many grams of hydrogen gas are produced with 0.88 moles of aluminum sulfate? 3…

A: We can determine the mass of Hydrogen gas produced from the balanced equation.  The balanced…

Q: (a) What mass of AgNO3 (169.9 g/mol) is needed to convert 2.33 g of Na2CO3 ( 106.0 g/mol ) to Ag2CO3…

A: To solve this problem first we have to calculate the number of mole of Na2CO3 by using molar mass .…

Q: A 10 gram sample of NaCl will have the same percent composition (percent by mass) of Na and Cl than…

A: Mass ratio of Na/Cl in 10 gram of NaCl Molecular weight = 58.44 (g/mole) Atomic weight of Na = 23.99…

Q: Ke =215 at 22° C. Suppose that 0.04S6 7. For the dimerization of NO2: N204 2NO2 → exists? a) 44.7…

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Q: Use the following reaction to determine the number of grams of SO2 produced from 2.40 g of NiS2.…

A: By the help of stoichiometric coefficient we can find the amount of unknown substance by the help of…

Q: b Glucose, a major energy-yielding nutrient, is present in bacterial cells at a concentration of…

A: b) Given that, Glucose, a major energy-yielding nutrient, is present in bacterial cells at a…

Q: Howmany grams of NaOH would be required to neutralize all the acid in 75.0 mL of0.0900 N…

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Q: How many grams of N2 will be used to produce 85.5 moles of MgN3?

A: 3591 grams of N2.

Q: Calculate the formula mass for NaAl(SO4)2∙12H2O. Group of answer choices 362.214 g/mole 394.280…

A: Given that, NaAl(SO4)2∙12H2O Calculate the formula mass?