Answer:
Isotope is one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties.
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Answer:
The volume of a gas approaches zero as the temperature approaches absolute zero.
Step-by-step explanation:
You may have done a <em>Charles' Law experiment</em> in the lab, in which you measured the volumes of a gas at various temperatures.
You plotted them on a graph, and perhaps you were asked to extrapolate the graph to lower temperatures.
Your graph probably looked something like the one below.
There is clearly an x-intercept at some low temperature.
Inference: The volume of a gas approaches zero as the temperature approaches absolute zero.
Foliated rocks are distinguished by layers, banding, or flakiness. Foliated rocks are given names depending their mineralogy and texture. These names can be slate, Phyllite and Schist. These rocks are formed within the Earth's interior under extremely high pressures that are unequal.
The titration would require the same amount of NaOH.
<h3>Number of moles and dilution</h3>
The number of moles of solute in a solution remains the same irrespective of the amount of water added to dilute the solution.
This is in accordance with the dilution law which says that the number of moles of a solution before dilution is the same as after dilution.
Thus, the amount of NaOH needed to neutralize the vinegar will remain the same for a complete reaction since the number of moles of solute in the vinegar has not changed.
More on number of moles can be found here: brainly.com/question/14919968
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Answer: 5 water molecules
Explanation:
Decomposition of hydrated copper sulphate is given by:
Molar mass of = 159.6 g/mol
According to stoichiometry:
(159.6+18x) g of decomposes to give = 159.6g of
Thus 7.74 g of decomposes to give= g
But it is given 7.74 g of a sample of hydrated salt was found to contain 4.95 g of anhydrous salt.
Thus we can equate the two equations:
x=5
Thus there are 5 water molecules associated with each formula unit.