Multiple Choice: How many atoms of carbon-14 are in the average human body given the following four facts: 1. Carbon makes up 23% of the human body by weight. 2. The average human body has a mass of 150 kg. 3. There are approximately 83 moles in every kg of carbon. 4. One in every trillion atoms of carbon is carbon-14. a. 1,89 X 10 (exponent 15) b. 1,72 X 10 (exponent 15) c. 1,89 X 10 (exponent 16) d. 1,72 X 10 (exponent 16)

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

A: a.

Q: a. What is the mass of 1.49 x 1024 atoms of chlorine? grams b. What is the mass of 9.12 x 1023…

A: a) mass of 1.49×1024 atoms of chlorine.

Q: 5. Determine the empirical and molecular formula for the following compounds. a. A pure compound is…

A: Hello. Since the question contains multiple sub-parts, the first sub-part will be only answered. In…

Q: How many moles of nitrogen monoxide can be made from 10.18 moles of nitrogen dioxide? nitrogen…

A: Given, Moles of NO2=10.18 moles  Moles of NO= ?

Q: a. How many ATOMS of boron are present in 7.41 grams of boron trichloride? 3.805x10^21 atoms of…

A: Molecule given = BCl3 1 molecule of BCl3 = 1×6.022 ×1023 Molar mass of BCl3 = 117.3 g/mol 117.3 g of…

Q: Consider aspirin (acetylsalicylic acid), C9H8O4 a. How much does one mole of aspirin weigh, in…

A: The formula of aspirin given is C9H8O4.

Q: A titanium cube contains 3.25 x1023 atoms. The density of titanium is 4.50 g/cm Part A You may want…

A: Given : Number of titanium atoms in cube = 3.25 X 1023 atoms And density of titanium cube = 4.50…

Q: How many molecules are in each sample? A. 2.8g H2O (Express your answer using two significant…

A: Given  (a)   Mass of H2O   = 2.8 gram         Number of molecule = ?  (b)  mass of N2 = 40.8 gram…

Q: How many moles are in 1.88 x 1022 Al atoms? A.) 2.00 moles B.) 0.500 moles C.) 0.312 moles D.)…

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

Q: What is the mass of 15.16 moles of X? (Assume that the molar mass of X is 39.3 grams per mole.)…

A: Moles:   Miles is unit of measurement of substance. It is calculated as the mass of substance…

Q: Sulfur trioxide reacts with water to produce H2SO4. How much sulfuric acid, in grams, can be…

A: Given, Sulfur trioxide (SO3) reacts with water (H2O) to produce sulfuric acid (H2SO4). mass of SO3…

Q: (2) How many molecules are in 30.1 g of sulfur dioxide? a. 1.81 x 1025 b. 2.83 x 1023 c. 6.02 x 1023…

A: Given , (a) Sulphur Dioxide (b) Ammonia

Q: An analysis of a compound shows that it contains 19.8 g of Carbon, 2.50 g of hydrogen, and 11.6 g of…

A: Please find your solution below : Percentage composition of any element gives the information about…

Q: An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: A chemist measures the amount of bromine liquid produced during an experiment. She finds that 658. g…

A: Given: Mass of bromine liquid produced - 658 g   To find: number of moles of bromine produced = ?…

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

A:

Q: Consider the incomplete combustion of methane, CH₁. CH4 (g) +2 0₂ (g) → CO₂ (g) + 2 H₂0 (1) (Ch. 2)…

A: Given -> Weight of CH4 = 16 gram  Weight of O2 = 64 gram

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: a. What is the percent by mass of carbon in 44 g of carbon dioxide (CO2 )?b. What is the percent by…

A: The mass percent of an element in a compound is calculated by using the relation as shown below.…

Q: a. If 1.00 g of aluminum hydroxide reacts with 3.00 g of sulfuric acid, what is the mass of water…

A:

Q: 1. Solve and choose the correct answer from the given choices: a. How many atoms of tin are found in…

A: 1. We have to calculate the number of atoms present in 3.5 moles of tin, Sn. We know that 1 mole of…

Q: Find the mass of 1 molecule of NH; in gram. a. 10 O b. 2.82 x1023 O c. 2.82 x10-23 O d. 17

A: According to the mole concept, one mole of any substance related as - (1) 1 mole of the Substance =…

Q: ▼ Part A Calculate the number of molecules in 6.00 moles H₂S. Express your answer numerically in…

A: The molecules of H2S in 6.00 moles is = 3.61 x 1024 H2S molecules

Q: 4. How many grams would 2.5 moles of magnesium (Mg) weigh? 5. How many grams would 10.0 moles of…

A: 4) Given : Moles of Mg = 2.5 mol Since atomic mass of Mg = 24.3 g/mol Hence mass of Mg = moles X…

Q: The amounts of two elements X and Y in three samples of an unknown substance are as follows: 10.0 g…

A: The objective of the question is to identify the substance as mixture, compound or an element.

Q: 4. Consider the photosynthetic conversion of CO2 and H2O to form glucose, C6H12O6 and O2 A. Write…

A:

Q: 4.35 L He/1 x 1 mole He/22.4 L He=0.19 moles He.  Explain why the final answer of 0.19 moles  makes…

A:

Q: The number of particles and amount, respectively, in 45.2 g of potassium nitrate is 2.69 x 10 22…

A:

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 60.9 g of oxygen. Calculate the mass of the…

A: Sample of trifluoroacetic acid molecular weight                          = (12× 2+ 1+ 3×19+ 16×2) g…

Q: Hydrogen reacts with oxygen to produce water as follows: 2H2(g) + O2(g) → 2H2O(g)  How many moles…

A: The reaction is as:-  2H2 + O2 ---> 2H2O

Q: All the fertilizers listed below contribute nitrogen to the soil. If all these fertilizers are sold…

A:

Q: A Freon leak in the air conditioning system of an older car releases 28 g of CF2C12 per month. Part…

A: The car release 28 g of CF2Cl2 in a month. The mass of chlorine emitted into the atmosphere each…

Q: A 3.528 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis…

A: we have to calculate the empirical formula and molecular formula of the compound

Q: Sucrose has the molecular formula C12H22O11. If a sucrose sample contains 8.0 x 1018 atoms of…

A:

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.