*A 55.74-gram sample of magnesium hydrogen sulfate [Mg(HSO4)2] would contain how many molecules? Is it: 1.536E23, 0.2551, 218.47, or 3.919

Q: A beaker contains 5.75 x 1024 molecules of ethanol. How many moles of ethanol are there in a beaker?

A:

Q: How many molecules are there in 54.6g of PF3? You will need to divide your answer by 1.0x10^23

A: Since we know that 1 mole of PF3  will contain 6.023 * 1023 molecules  i.e. is  equal to Avogadro no

Q: How many carbon atoms are present in 0.2523 g of retinal (C20H28O, molar mass=284.4 g/mol)?

A: The carbon atoms in 0.2523 g of retinal can be calculated as:

Q: needed 1or tins question. One of the hydrates of KF is potassium fluoride dihydrate . A 63.1 gram…

A:

Q: The empirical formula for a compound is CH2O, and the molar mass is 180.2 g/mol. Which is the…

A: The empirical formula of compound  = CH2O The molar mass of Molecule = 180.2 g/mol   To get the…

Q: What is the mass of 1.82 mole C4H11O3 in grams

A: mass of 1.82 mole C4H11O3 in grams determined in step 2

Q: A compound contains 1.65 x 10 23 atoms of carbon, 0.552 g of hydrogen and 4.39 g of oxygen, what is…

A: Given: 1.65*1023 atoms of carbon 0.552 g of hydrogen 4.39 g of oxygen

Q: (b) A compound is composed of elements C, H, and N. A 8.400-mg sample of the unknown compound was…

A:

Q: What is the mass grams that are in 6.30 × 1025 molecules of 1,?

A: Given is,  Molecules of I2= 6.30×10^25  And we know, Avogadro's number 6.022×10^23 Molar mass of I2=…

Q: What is the mass of 2.49 x 1022 of CH4 molecules?  ( 1 mole = 6.02 x 1023)

A: Calculate the number of moles of methane.

Q: How many oxygen atoms are present in 334 g of mannose, C6H12O6? atoms

A: 1. Find the molar mass of the given substance.2. Calculate the moles.3. Convert to atoms by…

Q: 1. Ethanol has a chemical formula of C2H6O. What is its molar mass? 2. How many molecules of the…

A: Ethanol has a chemical formula of C2H6O

Q: A 52 kg woman has 7.2 x 10-3 mol of hemoglobin (molar mass = 64456 g/mol in her blood. What quantity…

A: A mole is the basic unit of an elementHere it is required to find the number of hemoglobin molecules…

Q: What is the mass in grams of (3.57x10^26) atoms of nickel (Ni, MM = 58.69 g/mol)?

A: The answer to the following question is:

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.