Antimony, Sb has 2 isotopes and an atomic weight of 121.75 amu. The isotope anitimony-121 has a natural abundance of 57.25% and the isotope anitimony-123 has a natural abundance of 42.75%. If antimony-123 has a mass of 122.9041 amu, what is the mass of anitimony-121. Report your answer to 2 decimal places without units.

Q: Thallium (Tl) has an average atomic mass of 204.4 amu. If thallium-203 has an atomic mass of 202.972…

A: Given : Average atomic mass of Tl = 204.4 amu Atomic mass of Tl-203 = 202.972 amu Abundance of…

Q: An aluminum atom has a mass of 4.48×10^-23 g and a small airplane has a mass of 5000. kg. Use this…

A: The objective of the question is to find out the mass of 1 mole of aluminum atoms and the number of…

Q: 15. This ForeverspinTM top os made of pure carbon, with an Atomic Mass of 12. This top weights 9…

A: P

Q: Naturally occurring cobalt consists of only one isotope, 59Co , whose relative atomic mass is…

A: For the two isotopes of cobalt as 59Co and 60Co given data ;  Relative atomic mass (A1) of 59Co =…

Q: A copper atom has a mass of  ×1.0610−22g  and a penny has a mass of  2.5g . Use this information…

A: Given data :· Mass of copper atom = 1.06×10-22 g· Mass of Penny = 2.5 gWe need to calculate :· The…

Q: e mass of 1

A:

Q: The element boron has two stable isotopes: boron-10 (10.0129 u) and boron-11 (11.0093 u). The…

A:

Q: -22 A copper atom has a mass of 1.06 x 10 g and a penny has a mass of 2.5 g. Use this information to…

A: To find out the mass of 1 mol of copper atom, check the avogadro number in 1 mol and use that to…

Q: The mass of a single vanadium atom is 8.46×10-23 grams. How many vanadium atoms would there be in a…

A: Density is the physical quantity that relates mass of a substance with its volume.Mathematically,…

Q: An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99…

A:

Q: g and a penny has a mass of 2.5 g. A copper atom has a mass of 1.06 x 10 Use this information to…

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

Q: An imaginary element (x) on Mars is composed of two isotopes, 54.93% of isotope x-34 with a mass of…

A:

Q: Copper (II) fluoride contains 37.42% F by mass. Part A Use this percentage to calculate the mass of…

A: Given data contains, Mass percentage of fluorine is 37.47 %. Mass of copper (II) fluoride is 54.0 g.

Q: A copper atom has a mass of 1.06 x 10 - 22 g and a penny has a mass of 2.5 g. Use this information…

A: Given,  Mass of 1 copper atom = 1.06 × 10-22 g Mass of a penny = 2.5 g Mass of 1 mole of copper…

Q: An aluminum atom has a mass of 4.48 x 10 g and a small airplane has a mass of 5000. kg. Use this…

A:

Q: Rubidium has two naturally occurring isotopes, Rb-85 (mass 84.912 amu) and Rb-87 (mass 86.909 amu).…

A:

Q: (Incorrect) A 56.20 g sample of a compound containing potassium, chromium, and oxygen is analyzed as…

A: Given : mass of sample = 56.20 g       Mass of potassium = 14.94 g  Mass of chromium = 19.87 g

Q: Use the conversion factor 1 amu = 1.66054 x 10-24 g to answer the questions. How many atomic mass…

A: Given: 1 amu = 1.66054×10-24 g

Q: Tia has a sample of pure gold (Au). She weighed the sample and the result was 10.810.8 grams. Tia…

A: Number of atoms = number of moles x 6.0224 x 1023 Number of moles = Mass/molar mass

Q: An element, Spencerecium, has two isotopes.  Spencerecium-145 has a relative abundance of 85 % and…

A: Abundance of spencerecium -145 = 85%  Abundance of spencerecium-140 = 15%

Q: A 81.15 g sample of a compound containing potassium, chromium and oxygen is analyzed as containing…

A:

Q: = tr²l (l= length of wire) The density of copper at 20°C is 0.896 kg/dL at 20°C. A copper wire has a…

A: Given that,  The diameter of wire - 0.110 mm = 1.1 x 10-4 m; radius - 5.5 x 10-5 m.The atomic mass…

Q: - 22 A copper atom has a mass of 1.06 × 10 g and a penny has a mass of 2.5 g. Use this information…

A: Number of atoms in 1 mole of copper = 6.022 × 1023 atoms  Mass of one atom of copper = 1.06 x 10-22…

Q: Hydrogen peroxide (H2O2) is a mild antiseptic used to prevent infection in minor cuts and scrapes.…

A:

Q: The volume of a single strontium atom is 4.15 x 10-23 cm³. What is the volume of a strontium atom in…

A: It is a volume unit conversion problem where we are asked to convert the volume from cubic…

Q: An oxygen atom has a mass of 2.6610−23g and a glass of water has a mass of 0.050kg. Use this…

A: The number of units in one mole of any substance is equal to Avogadro’s constant. Given: Mass of…

Q: Percentage Abundance. The element rubidium consists of two isotopes, one having an isotopic mass of…

A:

Q: An iron atom has a mass of 9.27 × 10 - 23 g and a cooking pot has a mass of 0.500 kg. Use this…

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

Q: Bromine (atomic mass 79.904 amu) consists of 2 different naturally occurring isotopes, Br-79 (atomic…

A: .Bromine consist of two isotopes 79Br and 81Br.     79Br⇒78.9193 amu.     81Br⇒80.9163 amu…

Q: An aluminum atom has a mass of 4.48 × 10 g and a small airplane has a mass of 5000. kg. Use this…

A: The mass of one atom of aluminum is .The mass of a small airplane is .To find the mass of 1 mole of…

Q: What mass (in kg) does 5.84 moles of titanium (Ti) have? (please provide your answer with units and…

A: Formulas Number of moles = Mass/number of Molar Mass i.e. Mass(grams)= number of moles × number of…

Q: The element rubidium consists of two isotopes, one having an isotopic mass of 84.912 and the other…

A: Isotopes are derivatives of a given chemical element whose vary in the number of neutrons and…

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.