A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of hydrogen. If a second sample of chloroform is found to contain 20.8 g of carbon, what is the total mass of chloroform in the second sample?

Q: etermine the number of atoms in 37.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Mass of sodium =37.0g Atomic mass of sodium = 22.99g/mol Moles of sodium = 37.0g/22.99g/mol = 1.61…

Q: A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of…

A: Given : Mass of carbon in sample 1 = 12.0 g Mass of chlorine in sample 1 = 106.4 g Mass of hydrogen…

Q: On earth, tin has 10 different stable isotopes. The heaviest, 124Sn makes up 5.80% of naturally…

A: Grams of 124Sn present in 38.3 g sample     = 38.3*(5.80/100)= 2.22 g

Q: Naturally occurring chlorine (Cl) consists of two isotopes. One of the isotopes has a mass of 34.969…

A: Isotopes have same atomic number but different atomic mass or mass number. Atomic number is equal to…

Q: hydrogen phosphide can be decomposed to give phosphorus and hydrogen in a mass ratio of 10.32:1.00.…

A: the molecular formula of this substance is PH3 and the name of this compound will be phosphine.

Q: A sample of aluminum foil contains 9.50×1023 atoms.9.50×1023 atoms. What is the mass of the foil?

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Also, Number of atoms…

Q: A sample of aluminum foil contains 7.80×10^23 atoms. What is the mass of the foil?

A: A sample of aluminum foil contains 7.80×1023 atoms. The mass of the foil is to be calculated.

Q: A 49.8 g sample of water (H2O) contains 5.57 g of hydrogen. What mass of oxygen is contained within…

A: Solution:- 2H2O -> 2H2 + O2       Given data:- 49.8 g sample of water contains 5.57 g of…

Q: A compound of iodine and cesium contains 63.94 g of metal and 61.06 g of nonmetal. How many grams of…

A:

Q: A sample of tryptophan synthesized in the laboratory contains 29.4 g of carbon and 7.12 g of oxygen.…

A: Law of definite proportions indicate that irrespective of source, the amount of substance present in…

Q: A 64.36 g sample of XO2 contains 25.79 g of oxygen atoms. What is element X?

A: Given,      A 64.36 g sample of XO2 contains 25.79 g of oxygen atoms . To determine the identity…

Q: A sample of aluminum foil contains 4.50×1023 atoms.4.50×1023 atoms. What is the mass of the foil?

A: Given,  Number of atoms of Al foil = 4.50 x 1023 atoms  Mass of the Al foil = ?

Q: Carbon exists as 3 isotopes. It is 88% C-12, 1% C-13 and 11% C-14. What is the average atomic mass…

A: average atomic mass= isotop% multiplied by atomic mass /100

Q: A sample of Aluminum foil contains 6.30 x 10^23 atoms. What is the mass of the foil

A: One mole of any substance contains 6.023 X 1023 units of that substance (atoms, ions or Molecules) .…

Q: . Suppose you have a sample of sodium weighing 14.50 g. What mass of potassium would you need to…

A: Atomic mass of sodium=23 Atomic mass of potassium=39 Number of mole=given mass/molar mass So,…

Q: An unknown element X has the following isotopes: ²⁵X (80.50% abundant, mass = 25.03 amu) and ²⁷X…

A:

Q: Explain why the atomic mass listed on the periodic table is 126.9 amu for an atom of iodine and, for…

A: Isotopes are the compounds which have same atomic number but different mass number.

Q: Determine the number of atoms in 25.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Given, the mass of one mole of sodium is 22.99 gwe are asked to calculate the number of atoms in…

Q: A newly discovered element consists of 2 isotopes, one with a mass of 11.34 amu and a relative…

A: Mass of one of the isotope newly discovered element =11.34 amu  Relative abundance= 17.2 %  Mass of…

Q: A pure titanium bicycle frame contains 1.61 x 10^25 titanium atoms. What is its mass in kilograms?

A: 1 mole of any substance contain 6.022 × 1023 unit of that substance. that substance may be atoms,…

Q: How many atoms are contained in a block of aluminum metal measuring 4.0 mm x 9.0 mm x 11 mm? The…

A:

Q: Consider two compounds. Compound A contains 2.77 g of phosphorus and 9.53 g of chlorine. Compound B…

A: Given,Mass of Phosphorus in compound B =11.9gMass of chlorine in compound B =40.9g

Q: Naturally occurring bromine is composed of two isotopes: 50.69 % Br-79 (mass of 78.9183 amu) and…

A: Given,Naturally occurring bromine is composed of two isotopes:50.69 % Br-79 (mass of 78.9183 amu)…

Q: A single atom of element Q has a mass of 1.09 x 10 -22 g. What is the name of the element Q?

A: Given : Mass of single atom of element = 1.09 X 10-22 g Assuming atomic mass of element is M.

Q: Analysis of 24.1 g of calcium oxide revealed that it contained 17.2 g of calcium. What mass of this…

A:

Q: May I ask, Why and how does the mass number change in different questions?  For example, in the…

A: Mass number and atomic mass of an atom are two different terms. Mass number is defined as the sum of…

Q: Determine the mass in grams of 7.75 x 1021 atoms of carbon. (The mass of one mole of carbon is 12.01…

A: Given,the mass of one mole of carbon = 12.01 gNumber of carbon atoms = 7.75×1021 atomsHere, we are…

Q: Consider the mass of Sulfur and Fluorine in compound A (16.6 g S, 9.80 g F) and compound B (23.2 g…

A: According to atomic theory the atoms do no react in arbitrary numbers but in multiples of fixed…

Q: A sample of Fe weighs 37.2 grams. Will a sample of S that contains the same number of atoms weigh…

A: Weight of Fe sample = 37.2g Atomic mass of Fe = Atomic mass of S = Avogadro's Number =

Q: How many atoms are contained in a block of aluminum metal measuring 6.0 mm x 5.0 mm x 15 mm? The…

A:

Q: A 7.83 gram sample of a compound made of hydrogen, carbon, and nitrogen is found to contain 0.290 g…

A: In this problem, I used the concepts of stoichiometry and mass percent composition in chemistry.…

Q: A sample of aspirin synthesized in the laboratory contains 26.0 g of carbon and 15.4 g of oxygen. A…

A: Given : 1st sample contains 26 g of carbon and 15.4 g of oxygen. 2nd sample contains 8.16 g of…

Q: Upon decomposition, one sample of magnesium fluoride produced 2.55 kg of magnesium and 3.99 kg of…

A: Given information, Magnesium is produced from the first sample is 2.55 kg. Fluorine is produced from…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.