A 1.0-ml volume of seawater contains about 4.0 3 10212 g of gold. the total volume of ocean water is 1.5 3 1021 l. calculate the
1 answer:
Given the volume of water = 1.0 mL
Mass of gold =
Total volume of sea water =
Mass of gold in total sea water
= *
*
=
1 oz gold costs $948
Worth of gold in dollars = *
= $
Mining of gold from oceans is not practically possible, as gold is spread through out the ocean and processing gold from such vast oceanic waters is not economical and the extraction process is inefficient.
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Answer:
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
Thus in the reactants, there are 2 atoms of hydrogen and 2 atoms of iodine .Thus there has to be 2 atoms of hydrogen and 2 atoms of iodine in the product as well. Thus a coefficient of 2 is placed in front of HI.
The balanced chemical reaction is:
Answer: C) Tetrahedral
Explanation:
The number of electron pairs is 4 that means the hybridization will be but as there are three bonding domains and one nonbonding domain, thus electronic geometry is tetrahedral and the molecular geometry will be trigonal pyramidal.
Linear electron geometry is possible when number of electron pairs is 2 and the hybridization will be .
Trigonal planar geometry is possible when number of electron pairs is 3 and the hybridization will be .
Trigonal bipyramidal geometry is possible when number of electron pairs is 5 and the hybridization will be .
Octahedral geometry is possible when number of electron pairs is 6 and the hybridization will be .