Answer:True
Explanation:
Water is said to be hard when it contains calcium ions or magnesium ions dissolved in it. These ions are able to react with soap in such a way that the soap is prevented from forming lather with the water. Hard water occurs when water passes over calcium or magnesium bearing minerals and dissolves some of it. Hardness due to the presence of calcium ions can easily be removed by boiling the water.
Answer:
in 2.5 mole SO42 there are 25 Eq
Answer:
A)He, Ne, and Ar
Explanation:
I believe its this one. Sorry if its wrong. Remember that 8 electrons are in the outermost energy level .
Answer:
Scientists have made serious attempts to test this hypothesis, but no correlation has ever been found. Scientific disciplines based on hypothesis but with no consistent body of supporting evidence are called pseudoscience. Astrology is one of them. Effects of astrology do not exist in the Universe
Explanation:
I used google
Geiger counter, hope this helps food luck