Answer:
1. use a ruler to measure how many heights the ball falls down.
2. use notes to record observations.
HCl + NaOH ------> NaCl + H2O
hydrogen chroride + sodium hydroxide ----> sodium chloride + water
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Answer:
For instance, one liter of Mendocino mineral water contains more than 30% of the Ca2+ and Mg2+ DRIs in adult women, and 1 liter of Vichy .
Explanation:
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