A sample of mercury with a mass of 114.0 g was combined with 12.8 g of oxygen gas, and the resulting reaction gave 123.1 of mercury(II) oxide. How much oxygen was left over after the reaction was complete?

Q: 3. Oxygen has an atomic number of 8, an atomic mass of 16, and it is neutrally charged.

A:

Q: a 500-mg antacid tablet has 105 mg calcium carbonate (MW = 84.3139 g/mol). What is the %(w/w) of…

A:

Q: How many electrons make up 0.75 coulomb of charge?

A: The charge of electrons is quantized. The charge on one electron is given by: charge on one electron…

Q: (a) Describe Rutherford's experiment and how it led to the structure of the atom. How was he able to…

A: a)

Q: How many atoms are contained in a titanium sphere having a diameter of 4.00 mm? The density of…

A: Given : density of titanium = 4.506 g/cm3  And diameter of sphere = 4.00 mm  Since 1 cm = 10 mm…

Q: 103 A neutral atom of rhodium-103 (0Rh) contains how many protons, neutrons, and electrons?

A: Given,  A neutral atom = Rhodium  (a). How many protons = ? (b). How many electrons = ? (c). How…

Q: On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance…

A: The average atomic mass of three isotopes can be calculated using the following expression:

Q: Calculate the mass, in grams, of each sample. a. 1.1 x 10 gold atoms b. 2.82 x 102 helium atoms c.…

A: Calculate the mass in grams of each sample  (a) 1.1 x 1023 gold atoms (b) 2.82 x 1023  helium atoms…

Q: The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride…

A: After the decomposition of sodium fluoride, the mass of fluorine produced is calculated by using the…

Q: (Law of Conservation of Mass) A 0.455 g sample of magnesium is allowed to burn in 2.315 g of oxygen…

A: According to Law of conservation of mass total mass of reactants is equal with the total mass of…

Q: the number of copper atoms in 3.0 g lump of copper is 2.8 x 1022. how many electrons are present in…

A: Given: Number of copper atoms in 3.0 g lump of copper is 2.8 x 1022.

Q: Variations in average atomic mass may be observed for elements obtained from different sources.…

A: The formula for fractional abundance is, Fractional abundance=0.01×Abundance(%)

Q: Sulfur forms several compounds with fluorine. Upon decomposition, sample one produces 4.45 g of…

A: Given information is:                   Sample 1 →Decomposition F(4.45grams) + S (1.25grams)…

Q: The elements in Groups 1A(1) and 7A(17) are all quite reactive. What is a major difference between…

A: The elements in Groups 1A(1) and 7A(17) are all quite reactive. What is a major difference between…

Q: An ion that consists of 16 protons, 32 neutrons, and 18 electrons has:

A: The atom consist of 3 particles-  1- electron 2- proton 3- neutron

Q: When 0.220 g of iron (atomic weight %3D 55.85 g/mol) is burned, 0.341 g of iron oxide is obtained.…

A: Given, Mass of iron = 0.220 gm Mass of iron oxide = 0.341 gm Mass of oxygen = mass of iron oxide -…

Q: Two radioactive isotopes of iodine used for the diagnosis and treatment of thyroid disease have mass…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Determine the number of atoms that would make up a 78.8 g sample of Tellurium.

A:

Q: The element X has two naturally occurring isotopes: X50 (relative abundance = 30.15%, mass = 50.3)…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance…

A:

Q: The atomic mass of bromine is 79,904 amu. The atomic mass of the Br-81 isotope is 80.9163 amu and…

A: The atomic mass of bromine is 79.904 amu. This is actually the average atomic mass of Bromine which…

Q: Calculate the mass, in kg, of sample.  5.48x10^29 lithium atoms

A: Molar mass of lithium is 6.94 g/mol 6.023 x 1023 atoms have mass = 6.94 g of lithium

Q: If a sample of gallium contains 1.56×104 atoms of gallium-69 and 1.02×104 atoms of gallium-71, what…

A: Given,1.56×104 atoms of gallium 69.1.02×104 atoms of gallium 71.

Q: On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u)…

A: Formula is  Avg atomic mass = (%abundance×mass)1+(%abundance×mass)2 so do this all there Isotope of…

Q: The PHIVOLCS recently reported that Taal volcano emitted 15,500 tons of Sulfur Dioxide (SO,). How…

A:

Q: Calculate the atomic mass of magnesium. The three magnesium isotopes, Mg-24, Mg-25, and Mg-26, have…

A: Isotope is the same number of protons and electrons but have a different number of neutrons in an…

Q: The PHIVOLCS recently reported that Taal volcano emitted 15,500 tons of Sulfur Dioxide (SO2). How…

A:

Q: What is the edge length (in cm) of a titanium cube that contains 2.55 * 10(24) titanium atoms? The…

A:

Q: a) How many protons, electrons, and neutrons are in an 266 Sg atom? (atomic mass = 266) b) Atoms…

A: Elements are the species which consist of only one kind of atoms. In other words, species which…

Q: Calculate the mass, in grams, of a single platinum atom (mpt=195.08amu)

A: Atomic mass of platinum is 195.08 g/mol.

Q: Boron-10 and boron-11 are the naturally occurring isotopes of elemental boron. If boron has an…

A: Boron-10 and boron-11 are the naturally occurring isotopes of elemental boron. If boron has an…

Q: A bicycle part made of titanium, Ti, has a volume of 32 cm . Titanium has a density of 4.50 g/cm .…

A:

Q: 1. There are three naturally occurring isotopes of silicon: Si-28, Si-29 and Si-30. If Si-28 makes…

A:

Q: An element has a mass of 207 and has 125 neutrons in its nucleus. How many protons and electrons…

A: The smallest unit that retains an element's attributes is defined as an atom. Atoms can't be created…

Q: The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride…

A: The amount of sodium produced on decomposition of sample NaF is 28.8g. The mass ratio of sodium to…

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

A: Given, Atomic mass of 59Co = 58.9332 Atomic mass of 60Co = 59.9338 Given mass of Co = 1.5886 g…

Q: Hydrogen sulfide is composed of two elements: hydrogen and sulfur. In an experiment, 6.500 g of…

A: a)The mass of sulfur obtained is calculated as shown below,

Q: The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants…

Q: The PHIVOLCS recently reported that Taal volcano emitted 15,500 tons of Sulfur Dioxide (SO2). How…

A: Here we have to find total number of sulfur atoms present in 15500 tons of SO2 gas . Here we have to…

Q: On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance…

A:

Q: 1. Given the data in table shown below, calculate the atomic mass of unknown element X. Then,…

A: The average atomic mass of element is equal to the product of the masses of the isotope and its…

Q: Antimony has two naturally occurring isotopes: 121Sb (isotopic mass 120.904 amu) and 123Sb (isotopic…

A: If A1 and A2 atomic masses of two isotopes of an element with X1 and X2 as their percentage…

Q: The U.S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: Silver has two isotopes, one with 60 neutrons (percent abundance = 51.839%) and the other with 62…

A: Given: Silver has two isotopes. percent abundance of Isotope with 60 neutrons ( Ag47107 ) = 51.839%…

Q: Copper has two naturally occurring isotopes: 69.17% of Cu-63 (mass 62.93 amu) and 30.83% of Cu-65…

A: Average atomic mass of Cu = [(% abundance of Cu-63 x Mass of Cu-63) +(% abundance of Cu-65 x Mass of…

Q: Variations in average atomic mass may be observed for elements obtained from different sources.…

A: Fractional abundance can be calculated using the formula,