A typical cup of coffee has about 100. mg of caffeine. Calculate the number of caffeine molecules in 100. mg C3H10N402. O 3.10 x 1020 O 1.17 x 1025 O 3.22 x 10-21 O 3.10 x 1022 O 3.10 x 1025

Q: Which of these is true? 1. A molecular formula gives the actual number of each type of atom…

A: Based on the statement we can say that the statement is true or false.

Q: The use of freons is being phased out because of the damage these compounds do to the stratospheric…

A: a.

Q: Calculate the number of cations and anions in 7.18 g of KBr. cations anions x 10 x 10

A:

Q: The fuel used in many disposable lighters is liquid butane, C4H10. Butane has a molecular weight of…

A: Molar mass of any element is equal to the atomic mass of that element in the unit of grams. Molar…

Q: Calculate the total number of N atoms in 23.8 g N2O5. O 2.65 x 1023 total N atoms O 9.31 x1023 total…

A:

Q: You have 28.83 liters of oleic acid. Find the number of molecules in this sample. Oleic acid has a…

A:

Q: 4) A 5.416 g sample that contained NaCl and BaCl2 2H₂O was heated. After heating the sample had a…

A: “Since you have posted a multiple questions we will solve the first question for you. To get the…

Q: . A 67.0 g sample of a compound was found to contain 40.2 g of carbon, 3.00 g of hydrogen and 23.8 g…

A:

Q: Mass of Zn 2.44 g Mass of Cu 0.063 g The mass of Zn and the mass of Cu in a coin are given in the…

A:

Q: What mass (in kg) does 4.41 moles of copper have?     0.784 kg     0.444 kg     0.280 kg…

A: Given -  No of moles =4.41 moles  Molecular mass of  copper (M) = 63.546  g / mol No of moles = 4.41…

Q: 1. Convert 25.2 g into mg. (1000 mg = 1 g) 2. Convert 3 x 105 g into kg. (1000 g = 1 kg) 3. What is…

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

Q: Determine the mass in grams of Li+ (6.941 g/mol) in 25.0 g of Li2SO4 (109.94 g/mol).

A: Given: Mass of Li2SO4 = 25.0 g.

Q: Determine the moles of barium in each sample. Be sure each of your answer entries has the correct…

A: Part 1) 731. g Ba:To find the number of moles of barium, we'll divide the given mass by the molar…

Q: Given a compound with a MW of 169 amu having 13.60% Na, 8.29% N, 35.51% C, 4.77% H, and 37.85% O,…

A: Given question related to calculation of molecular formula from elemental analysis “Since you have…

Q: Sucrose has the molecular formula C12H22011. If a sucrose sample contains 9.0 x 1024 atoms of…

A: Given, Sucrose has the molecular formula: C12H22O11 A sucrose sample contains, Number of atoms of…

Q: Find the number of H2O molecules in 3.80 liters (3800 cm3) of water.

A:

Q: Write the chemical formula for each compound, and then calculate the amount in moles in each sample.…

A:

Q: How many grams do 3.47 x 1023  formula units of Sr(ClO4)2 weigh?

A: The question is based on mole concept. We have been given formula units of solute. we have to…

Q: Calculate the number of oxygen atoms in 25.1 g of nitric acid. O 4.80 x 1023 oxygen atoms O 7.19 x…

A: The number of moles of a substance is the mass of the substance upon its molar mass.

Q: Calculate the number of oxygen atoms in 25.1 g of nitrous acid. 4.80 x 1023 oxygen atoms O 6.43 x…

A: Given,  Mass of nitrous acid = 25.1 g

Q: A 0.720 mol of Ca3(PO4)2 sample weighs how much in milligrams? What is the mass in grams of…

A:

Q: How many water molecules are in 6.00 raindrops? Assume that there are 20.0 raindrops in 1.00 mL of…

A: Density is defined as: It is the ratio of mass per unit volume 1 mole of any chemical species…

Q: An air conditioner compressor contains pure CClF3, also known as the refrigerant R-13. CClF3 has a…

A: We know that, density can be expressed as the mass per unit volume, i.e.…

Q: Determine the mass in grams of 6.39 * 10 ^ 41 of arsenio ( mass of one mole of arsenic is 1.92 g)

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: You can also calculate percent composition from a formula. This is similar to percent abundance in…

A:

Q: which of the following has the greatest number of particles? a. 76 g of Mg(OH)2 b. 2.95 g of H2 c.…

A: a) To determine the number of particles in 76 g of Mg(OH)2, no. of moles = given massmolar mass= 76…

Q: How many moles of carbon are there in a 7.000 g (35.00 carat) diamond? Express your answer in moles…

A:

Q: A Freon leak in the air conditioning system of an older car releases 30 g of CF2Cl2 per month. Part…

A: To calculate the mass of chlorine(Cl) emitted into the atmosphere each year by the car due to a…

Q: O 4.29 x 10 10 g What is the mass of 4.63 x 1012 atoms of Fe? O 1.08 x 10 10g O 9.76 x 10 10 4.29 x…

A:

Q: A balanced chemical equation contains the term "2Ba(OH)2-8H₂O", which is used as a lubricating…

A: Given: The coefficient of  is 2.

Q: Determine the amount in moles of xenon tetrafluoride, XeF4(s), in 22 mg.

A:

Q: A sample of ammonia (NH3) has the mass of 56.6 g.  How many molecules are in this sample? Group of…

A: The formula for ammonia is NH3. Now we can calculate the mass of 1 mole of NH3. N = 14.01 H = 1.008…

Q: Name each compound, and then calculate its mass. Express this value in scientific notation. a. 4.5 x…

A: Given Moles of Co(NO3)2 = 4.5 x 10-3 mol

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.