Post-tab. CALCULATIONS (show your work) d) Mass of zinc present in the compound

Q: When can the empirical formula be the same as themolecular formula?

A: Molecular formula represents the correct number of atoms present in a compound. Empirical formula…

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Q: The percent by mass of nitrogen for a compound is found to be 63.7%. Which of the following could be…

A: The compound is formed from two elements nitrogen and oxygen. The percentage of nitrogen is 63.7 %,…

Q: estion 15 of 27 How many grams of F are in 155 g CaF,? mass:

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Q: Use the References to access important values if needed for this question. What would you multiply…

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Q: Part A A salt crystal has a mass of 0.16 mg . How many NaCl formula units does it contain? Express…

A: Mass of NaCl = 0.16mg or 0.00016g Molar mass of NaCl = 23 + 35.5    = 58.5g/mol

Q: Arrange the fertilizers in decreasing order of mass percentage of nitrogen. Highest percent nitrogen…

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Q: Calculate the Molar Mass of the following:

A: Note: As per our guidelines, we are supposed to answer only three subparts when multiple subpart…

Q: Problem Solving Directions: Solve the following problems. Write your complete solution. 1. A 60.00 g…

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Q: number should be placed in front of CaSO4 to give the same total number of sulfate

A: The number should be placed in front of CaSO4 to give the same total number of sulfate ions on each…

Q: e empirical formula and the molecular formula

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Q: For 4130 steel, how many atoms per carbon atom are there? Please show work.

A: For 4130 steel, the amount of iron atoms present are alomst 98%. There is maximum percentage of iron…

Q: pls solve to the weight of Calcium in mg: giuon.

A: Solution:  We know EDTA can form complex with Ca2+ ion.  So the reaction is : Ca2+ (aq)  + EDTA 2-…

Q: Determine the number of molecules in 44.5 grams of SO₂. Round to right amount of sig figs.

A: Number of moles = Mass/molar mass Number of molecules = 6.0224 x 1023 x number of moles

Q: Using Molar Mass and Avogadro Part B Caffeine is a bitter stimulant drug and is found in varying…

A: Caffeine had molecular formula C8H10N4O2 Means,  1 mole of caffeine has 8 moles of carbon, 10 moles…

Q: Which has more mass, a mole of potassium or a mole ofsodium? Explain your answer.

A: The atomic mass of the element is equal to the sum of the number of protons and neutrons present in…

Q: 22. Write the correct formula for calcium acetate and then answer 23 - 25 based on it. 23. What is…

A: Interpretation- (22) To write the formula of calcium acetate-  (23) To determine the mass of one…

Q: Tab [Review Topics] [References] Use the References to access important values if needed for this…

A: Given, (1) Number of moles of sulfur dioxide = 1.62 moles Then, To calculate the number of atoms of…

Q: During the Empirical Formula Lab you extinguished your “L-tube” flame without waiting for the…

A: If the reaction cools down before the L-tube flame goes out, it indicates an incomplete reaction or…

Q: A 28.57 gram sample of X contains how many moles? (Assume that the molar mass of X is 25.77 grams…

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Q: You can retry this question below Calculate the number of moles found in 116.4 grams of Al2S3. mol…

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Q: How do I tell how many significant numbers in a quotient or product?

A: There are some rules to determine the number of significant figures which are described below - -…

Q: Calculate the number of atoms or molecules in

A: One mole of a substance is equal to Avagadro no. (6.022 x 1023 molecular entities, i.e. atoms,…

Q: n. What is the empirical formula?

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Q: Show all work for all parts of the question for full credit and use your units. Use 2 decimal places…

A: Interpretation -  For KNO3 ,  what is the molar mass - To determine the percentage composition in…

Q: Briefly explain why your results may not match with the expected empirical formula, and propose how…

A: The expected empirical formula is Fe2O3.  The empirical formula obtained from experimental results…

Q: Arrange the fertilizers in decreasing order of mass percentage of nitrogen. Highest percent nitrogen…

A: Mass percentage is simply the ratio of the mass of the elements to the mass of the compound…

Q: I just bought half a kg of NaCl. How many moles did I purchase?

A: Given: Mass of NaCl = 0.5 Kg = 500 g.                                        (since 1 Kg = 1000 g)

Q: Use the References to access important values if needed for this question. Determine the molecular…

A: Given that -  Gray spheres = Nb (Neiobium)   Green spheres = Cl (Chlorine)    In the diagram , there…

Q: Calculate the molar mass of C6H12O6. Show your work.

A: Molar mass = Sum of Atomic masses of all the atoms present in the molecule  Since in each molecule…

Q: what is the formula mass of calcium nirate? ( round to a whole number)

A: To Write the formula of a chemical compound. first write the Symbol of cation and then write the…

Q: • Part B How many grams of NH3 can be produced from 4.05 mol of N2 and excess H3. Express your…

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Q: Data Report Sheet: Preparation of Copper (I) Chloride Mass of Copper Foil 1.0762 Moles of Copper…

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Q: Chemistry Determine how many atoms are in each formula and then determine the molar mass. Show your…

A: Atoms are made up of neutrons, electrons and protons. Protons are positively charged particles.

Q: Calculate the mass (g) and moles of the alcohol sample.

A: 2.) Mass can be calculated using volume and Density .  Moles can be calculated using mass and molar…

Q: Arrange the fertilizers in decreasing order of mass percentage of nitrogen. Highest percent nitrogen…

A: Arrange the given compound in decreasing order of mass percentage of nitrogen ?

Q: Make a Venn Diagram on empirical and molecular formulas.

A: Empirical formulas are defined by the exact ratio of atoms of different elements in a compound…

Q: what mass of silver sulfadiazine, Ag

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Q: A molar mass value is equivalent to any element's

A: From given  Molar mass is the mass of 1gram mole molecule.

Q: How many electrons in a chloride ion? (How many electrons in the ion that chlorine makes?) Please…

A: According to the question we have to determine the how many electrons in a chloride atom. Atomic…

Q: Unknow A sample ( given density= 0.795 grams/mL) Volume:24.6mL #of moles in sample:0.31825 moles…

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Q: 目 Using the chemical equation above, solve the problem listed below: How many grams of Li,SO, would…

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Q: and M lass Questions You will need to complete this worksheet before entering the names or formulas…

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Q: Which of the molecules' may not be separated if amount of sample is doubled ? write the number of…

A: To answer which molecules will not be separated if the amount of sample is doubled.

Q: How to i measure the mass oxalate when i only have the potassium ferrioxalate sample of 0.127 g but…

A: Recall the formula of potassium ferrioxalate is K3FeC2O43 Molar mass of K3FeC2O43 is 491.25 g/mol…

Q: Click in the answer box to activate the palette. The empirical formula of a compound is CH. If the…

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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.