6. How many oxygen atoms are in 225 g oxygen gas? a. 4.23 x 104 C. 8.47 x 10:+ b. 6.84 x 10²4 d. 1.69 x 1025

Q: A student obtains 50.00 grams of calcium hydroxide.  Determine the number of hydroxide ions present…

A: The chemical formula of calcium hydroxide is Ca(OH)2. One molecule or unit of it contains one…

Q: Determine the mass in grams of 5.28 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A: Given, Number of barium atoms =5.28×1021 atomsmass of one mole of barium =137.33 gwe are asked to…

Q: An 8-ounce glass of water contains 24.7 moles of hydrogen. How many hydrogen atoms do you drink per…

A: Answer :-  1.49 × 1025 hydrogen atoms.…

Q: a) A sample of a compound containing only carbon and oxygen decompose s and produces 24.50g of…

A: The formula in which the elements are in the simplest whole number molar ratio is termed as…

Q: how many grams of mercury are in 9 moles of mercury ?

A: By using mole concept , number of moles is given as below: number of moles=mass in gMM in…

Q: Use the following terms to complete the statement: 6.02 x 1023 molecules 6.02 x 1023 atoms 4 atoms…

A: One mole of an element contain Avogadro's number 6.02×1023 of atoms of that element. Therefore, 1…

Q: 52. A room contains 19.4 moles of oxygen gas. How many 0, molecules are present in this room? What…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: (a) The number of atoms in 6.95 moles of potassium.

A:

Q: 9. Consider the following compound: FeCl, a. What is the name of the compound? ( b. What is the…

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

Q: Determine the number of oxygen atoms (Units) found in 205 g of potassium sulfate, K2SO4

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

Q: Tin has 10 stableisotopes. The heaviest, 124Sn, makes up 5.80% of naturally occurring tin atoms. How…

A: Given that,  124Sn isotope makes up 5.80% of naturally occuring tin atoms  Mass of tin sample = 57.0…

Q: Calculate the mass, in grams, of 752 atoms of lithium, Li (1 mol of Li has a mass of 6.94 g). with…

A: Number of moles = Given number of atoms NA

Q: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

A: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

Q: A certain compound X is composed of 70.53% carbon, 13.02% hydrogen, and the remainder is nitrogen.…

A: Given values: Percentage of carbon = 70.53 % Percentage of hydrogen = 13.02 % Percentage of nitrogen…

Q: Find: a) what% by mass of oxygen are in 60 grams of NH4NO3 b) how many hydrogen atoms are in 60…

A: The answer to the following question is-

Q: on is 1.00 g/mL. The molar mass of LizPO, is 115.79 g/mol and the molar mass of H20 is 18.02 g/mol.…

A:

Q: Calcium oxide (CaO), also known as quicklime, can be produced by heating calcium carbonate (CaCO3).…

A: The molecular formula of calcium oxide is CaO. It states that one molecule of calcium contains one…

Q: How many atoms of He are in 2.59 moles of He? In scientific notation

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

Q: Calculate (a) the number of atoms in 1.05 × 10−6 mole of helium and (b) the number of moles of…

A: a.

Q: A) Suppose one molecule of Chlorophyll X contains 5 oxygen atoms. Chlorophyll X is 8.95% oxygen by…

A: Molecular mass of Chlorophyll X can be found out by using the mass percentage of Oxygen and number…

Q: Jennifer produces 11.9 grams of calcium carbonate, CaCO3 in a chemistry lab. How many moles was…

A:

Q: A 14.56 g sample of phosphorus reacts with 41.38 g of chlorine to form only phosphorus trichloride…

A:

Q: 17.1 mol Hg Express your answer using three significant figures. ΑΣφ VN3D atoms

A: Given :-  number of moles of Hg = 17.1 mol  number of moles if Na = 0.280 mol  To calculate :-…

Q: how many atoms of scandium are in 7.54 moles of scandium

A: According to  Avogadro,  1 mol of scandium has 6.023 x 1023 number of atoms  Then 7.54 mols of…

Q: Profiles Tab Window Help Chrome Edit View History Bookmarks File Lobby | Top Hat N Watch Gilmore…

A: Mass of Mg2SiO4= 80.0 g , Molar mass= 140.69 g mol-1 Then, Number of Mg atoms = ?

Q: A sample of barium reacts completely with oxygen in a specialized crucible. The reaction that occurs…

A: Answer:- This question is answered by using the simple concept of determination of empirical formula…

Q: number

A: According to the question, the atomic number of oxygen is 8 and the atomic number of sulfur is 16.…

Q: Determine the mass in grams of 2.25 × 10²¹ atoms of copper. (The mass of one mole of copper is 63.55…

A:

Q: Determine the mass, in grams, of 0.580 moles of Pb (1 mol of Pb has a mass of 207.2 g).

A:

Q: A certain ore is 30.3% nickel by mass. How many kilograms of this ore would you need to dig up to…

A: Introduction: We have to calculate the mass of ore.

Q: How many grams of gold are there in 0.413  moles of gold?

A: Given: Moles of gold = 0.413 mol. Atomic mass of gold is 197 g/mol.

Q: Aluminum has a density of 2.70 g?cm3 . How many moles of aluminum are in a 13.2 cm3 block of the…

A: Given:- Density (S) = 2.70 gm/cm3 Volume = 13.2 cm3 So that                 S = mass / volume…

Q: How many moles of mercury (Hg) would be found in 250. grams of mercury?

A: Given that: mass of Hg = 250 g To find: number of moles of Hg?

Q: Determine the mass, in grams, of 0.805 moles of S (1 mol of S has a mass of 32.07 g).

A: The general expression that shows relationship between moles and mass is as follows, Moles=MassMolar…

Q: How many moles of mercury are in 17.140 grams of mercury?

A: Atomic number of mercury is ----  80 Atomic mass of mercury is ----- 200.59 g Since atomicity of…

Q: You have 15.31 g of an unknown compound. Through analysis, you have determined that this sample…

A: Mass percent can be calculated as follows:

Q: Determine the mass, in grams, of 0.675 moles of S (1 mol of S has a mass of 32.07 g).

A:

Q: 47.00 g sample of MgCO3.XH2O is heated to move away the water. After that, the total mass was…

A: It is given that 47 g of sample is heated and the mass of the sample left is 22.74 g,

Q: What does xH,0'represent in the formula AL(S0,);•xH,O? The student heats 12.606g of AL(SOxH,O…

A:

Q: What is the mass of one mole of Sg?

A: Mass of one mole of any element means it's molar mass

Q: 1. What does the mole measure? a. mass of a substance b. volume of a substance c. density of a…

A:

Q: a rain drop has a mass of 50mg and the entire pacific ocean has a mass of 7.08e20kg. What is the…

A: The mass of the rain drop is 50 mg = 0.05 g. The mass of entire Pacific Ocean is 7.08 × 1020 Kg.

Q: Answer the following questions using the data in the table below.  See the calculations section…

A:

Q: (a) 11. Average atomic mass in amu of one iron atam. 55.847 amu (ь) Using the amu, calculate the…

A:

Q: Mercury is the only metal that is a liquid at 25 degrees celcius. Consider a drop of mercury. A…

A: Moles of a substance can be defined as the ratio of mass of given substance to its molar mass.…

Q: Determine the mass of 4.6 moles of ammonium chloride

A: Given, Ammonium Chloride  Formula :: NH4Cl

Q: The molar mass unit is gram per litter t true False

A: Explanation to the correct answer is given below

Q: How many moles of Helium are in 8.31 grams of helium (He)?

A:

Q: Convert (2.326x10^24) atoms of sulfur to moles of sulfur. Use the abbreviated form of the unit in…

A: