a) Determine the number of atoms in 1.75 mol Al(i) Calculate the number of formula units in 25.0 mol NaNO3(ii) Given 6.25 mol H O2 determine the number of molecules

Q: (MC) Identify the correct mathematical calculation to determine the number of moles in 9.85 grams of…

A:

Q: For each of the following molecular formulas, indicate its corresponding empirical formula.…

A: The empirical formula of a compound represents the ratio of elements in a compound in its least…

Q: Which of the following are true of molar mass?  Mark ALL that apply. Group of answer choices Molar…

A: Molar mass of a compound is the defined as the mass of that compound divided by the amount of the…

Q: In the following How many total atoms of C How many total atoms of O How many total atoms of H 5 CO2…

A: In chemical reaction, stoichiometric coefficient depicts number of atoms of elements in a compound.…

Q: A250 mg sample of a compound containing carbon hydrogen, and oxygen underwent combustion producing…

A: Since you have posted multiple questions, we are entitled to answer the first only. a) Given: mass…

Q: Calculate the percentage of water in the following hydrates An unknown hydrate, AC. XH2O has a mass…

A: The mass of unknown hydrate, AC. XH2O is = 1.632 g and the mass of the anhydrous compound, AC =1.008…

Q: Given 0.680 moles of Ca(NO3)2; calculate the formula units of Ca(NO3)2 in this amount.…

A: Given Moles of  Ca(NO3)2  = 0.680 moles

Q: A patient is having an allergic reaction and takes a 50.0 mg tablet of the over the counter…

A: The number of moles links the given mass and number of molecules.here moles=given massmolar…

Q: A student weighs an empty beaker at 85.301 g. A sample of Na2SO4·??H2O is added to the beaker, and…

A: Mass of empty beaker = 85.301 g  Mass of beaker + hydrated salt = 86.607 g  Mass of beaker +…

Q: Complete combustion of 4.00g of a hydrocarbon produced 12.8g of CO2 and 4.58 g of H2O. What is the…

A: We have hydrocarbon meaning only C and H so we don't have to care of O.  Carbon involved in…

Q: What is the molecular formula of each compound? (Type your answer using the format C6H12O6 for…

A:

Q: Which pair of compounds have the same empirical formula?  CH and C2H2  C2H6 and CH  C3H8 and C3H…

A: Answer is explained below.

Q: If a sample of Al(ClO3)3 is found to contain 840 mol of Al3+ ions how many Al(ClO3)3 formula units…

A: 1 mole = 6.022×1023 [ Avogadro's number , NA ]  Any species which is in the number of 6.022×1023 is…

Q: Determine the empirical formula for the compound with the molecular formula B2Cl4.

A: The Answer to the following Question is given as:

Q: A 11.32mg of an unknown chemical compound containing only C, H and O is submitted for elemental…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: 2.0 of methane to molecules

A:

Q: What is the molar mass of sugar: C6H12O6? Round answer and elements to the tenths place. (C = 12.0,…

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Q: The number of formula units in 2.5x10-4 g of magnesium nitrate

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Q: Which one of the following molecular formulas is also an empirical formula?

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Q: . The formula for ibuprofen is C3H1O2. How many moles of ibuprofen are present in 250.0-mg tablet?

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: A compound is composed of elements C, H, and N. A 7.875-mg sample of the unknown compound was…

A: Given:Mass of CO2 = 21.363 mg = 21.363 ×10-3 g.Mass of H2O = 6.125 mg = 6.125 ×10-3 g.Molar mass of…

Q: Unit Conversions: 1. Calculate the number of oxygen atoms in 19 grams of magnesium chlorate.…

A:

Q: .) Determine the empirical formula for the compound with the molecular formula C14H10O4   Empirical…

A: Given  Molecular formula =  C14H10O4 Empirical formula  =  ?

Q: How many moles are represented by 3.65x10^34 molecules of water?

A: Given: molecules of water = 3.65×1034

Q: Which would contain 9.03 × 1023 oxygen atoms? Avogadro Constant = 6.02 × 1023. 3.0 mol H2O   0.75…

A: This problem can be solved by knowing that one mole of substance consists of 6.022×1023 particles.

Q: The average nicotine (C10H14N2) content of a Camel cigarette is 1.93 mg. Suppose an individual…

A:

Q: Which of the following could be the empirical formula for a compound? O A. C6H1206 O B. CH3OH O C.…

A: The empirical formula is the simplest ratio of the elements present in the exact molecular formula.…

Q: What is the percent (by mass) of oxygen in citric acid, C6H8O7.

A:

Q: How many molecules are in 13.7 moles of water? All answers have units of molecules of water 8.25 х…

A: We need to find molecules of water in 13.7 moles water.

Q: Match the left column correctly with the right column.         Hg2CL2 molecular element Silicon…

A: The table is given below:

Q: Match each of the following with its correct answer The empirical formula of a compound is CH. If…

A:

Q: 6) 8.31 x 10 atoms magnesium (8.31X1024)(1) /6.02x1023-13.8mol 7) 4.52 x 10ª formula units NaCl 8)…

A: This problem can be solved by knowing that one mole consists of 6.022×1023 particles.

Q: How many molecules of water are made from 8 molecules of H2? molecules

A: Balanced equation for the formation of water from hydrogen and oxygen is as follows. 2H2+O2→2H2O…

Q: Determine the number of moles of the compound and determine the number of moles of each type of atom…

A: a) Since molar mass of KBr = 119 g/mol Hence moles of KBr = mass / molar mass = 2.12 / 119 = 0.0178…

Q: many sugar molecules are in the beaker?

A: The size of single sugar molecule is 1.5 nm approx. The length of 1 mile is equal to 1.609×1012 nm.…

Q: What is the molar mass of the following compound? Include the mass to 2 decimal points without…

A:

Q: Given the following equation: N2 + 3H2 --> 2NH3, write the following molar ratio for N2 to NH3 O a)…

A: The balanced Chemical equation given in the question is -   N2 + 3H2 -----> 2NH3   Here, in the…

Q: How many formula units make up 35.8 gg of magnesium chloride (MgCl2MgCl2

A: The formula of magnesium chloride is MgCl2  hence the molar mass of MgCl2 is  = (24.30 + 2 × 35.45)…

Q: A dandruff shampoo contains dipyrithione, C10H8N2O2S2, an antibacterial and antifungal agent. Part…

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

Q: 46How many grams of CaCl2 are in 2.5x1024 formula units of CaCl2? Blank #1 is your answer and Blank…

A: Once we know how many moles we have, we can use calcium chloride's molar mass to convert those to…

Q: Complete the following table. Formula Number of SO42−SO42− units Number of sulfur atoms Number of…

A: First we are going to write the correct formula of calcium sulphate then we are going to calculate…

Q: Using the models of the molecules " (black=C, white=H, yellow=S, green=Cl), determine each of the…

A: A question based on ball and stick model, which is to be accomplished.

Q: According to the following reaction: 4HCI (aq) - 02 (g) → 2H20 (1) + 2C12 (g) What would you…

A: Solution: From the balanced chemical reaction, we can write the stoichiometric coefficient to…

Q: Nitrogen dioxide (NO2) is a major component of urban air pollution. For a samplecontaining 4.000 g…

A: Each particular substance holds specific relationship between its molecules and moles depicted using…

Q: And set up the mole ratio of O2 to C4H9OH =    CO2 to O2= Confused on how to do the ratios.

A: mole ratios is the ratio of moles of one component to the moles of another component in a balanced…

Q: What is the number of molecules in 1.55 mol O2?

A: Number of moles of O2 = 1.55 mol  Number of molecules of O2 = ?

Q: the number of moles in 7.44*10^4kg of lead

A: Given Mass of lead= 7.44×104 Kg×103 g1 kg=7.44×107 g Molecular Mass of lead= 207 g/mol To calculate:…

Q: Which of the following contains the largest number of atoms? Select one: a. 1.0 mol of water (H2O)…

A: The numbers of atoms present in any substance can be calculated by help of Avogadro's Number. One…

Q: Calculate the molar mass of copper(II)chloride dihydrate.

A: Given :-  Molecular formula of copper(II)chloride dihydrate = CuCl2.2H2O  To be calculated :-  It's…

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.