The basic building block of matter is the atom.
Answer: Volume of the 1M EtOH and water should be 0.75 ml and 9.25 ml respectively to obtain the working concentration.
Explanation:
According to the dilution law,
where,
= molarity of stock solution = 1M
= volume of stock solution = ?
= molarity of diluted solution = 0.075 M (1mM=0.001M)
= volume of diluted solution = 10 ml
Putting in the values we get:
Thus 0.75 ml of 1M EtOH is taken and (10-0.75)ml = 9.25 ml of water is added to make the volume 10ml.
Therefore, volume of the 1M EtOH and water should be 0.75 ml and 9.25 ml respectively to obtain the working concentration
Answer:
Explanation:
Given the details, we can say that
Pure methanol is a volatile solvent as the vapour pressure has a high value. This means that methanol - methanol intermolecular forces are weak in comparisson to water - water forces. When having about 30% of water in a methanol mixture, the mixture Pv decreased, showing that it is not a volatile mixture, so then there are strong intermolecular interactions between methanol - water, part of it due to the hydrogen bonds.
2) carbon and hydrogen only.
Answer:
The answer to your question is below.
Explanation:
1. Has 4 energy levels
<u>a. K </u><u>Potassium is in period 4 so it has four energy levels</u>
<u>b. Ga </u><u>Also Galium is located in period four, so it has four energy levels.</u>
c. Al Aluminum only has 3 energy levels.
<u>d. Ge </u><u>Germanium has four energy levels</u>
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2. Tends to lose 3 electrons
a. K Potassium only lose one electron
<u>b. Ga </u><u>Gallium loses 3 electrons because is in group three.</u><u>
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<u>c. Al </u><u>Aluminum loses 3 electrons</u>
d. Ge Germanium tends to gain or lose four electrons.
