Basis: 1 g of the compound
Calculate for the masses of gold (Au) and oxygen (O) in the compound by multiplying the decimal equivalent of the percentages to the mass of the basis.
Au: m = (0.8914)(1) = 0.8914 g
O: m = (0.1080)(1) = 0.1080 g
Then, calculate for the number of moles of the elements by dividing their masses with their molar masses which are 196.97 g/mol for gold and 16 g/mol for oxygen.
Au: n = 0.8914 g/ (196.97 g/mol) = 4.5255 x 10^-3 mols
O: n = (0.1080 g)/ (16 g/mol) = 6.75 x 10^-3 mols
Then, divide the number of mols with the lower number between the two, this is 4.5255 x 10^-3 mols.
Au = 4.5255 x 10^-3 / 4.5255 x 10^-3 moles = 1
O = 6.75 x 10^-3 mols/ 4.5255 x 10^-3 moles = 1.5
The equation therefore is AuO3/2. Eliminate the fraction by multiplying the numbers by 2. This gives us the final answer of,
<em> Au2O3</em>
Answer:
1. C. helium
2. D. oxygen and acetylene
3. B. deliquescence
4. C. cutting very hard surfaces
5. B. 3.5%
Explanation:
Temperature is a measure of the average kinetic energy of the particles in the sample. This is the statement that defines the temperature of a sample of matter.
The temperature of a system is defined simply as the average energy of microscopic motions of a single particle in the system per degree of freedom.
The microscopic motions in a solid matter is the principal vibrations of the constituent atoms about their sites. In an ideal monoatomic gas, the microscopic motions are the translational motions of the constituent gas particles. In multiatomic gases, aside from translational motions, vibrational and rotational motions are included in the microscopic motions.
The common name to the family member of phylum Echinodermata of marine family is echinoderm. They are usually characterized by a five-fold symmetry, and possess an internal skeleton of calcite plates. They are found at every ocean depth.
The features of all adult echinoderm are:
- They have a five-fold symmetry.
- Body without segmentation.
- Spiny skin.
- Internal skeleton.
- found at every ocean depth.
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