Answer:To calculate the Molarity of a 70 wt. % Nitric Acid the number of moles of HNO 3 present in 1 liter of acid needs to be calculated. Knowing the density of the acid to be 1.413 g/mL, we can calculate the weight of 1 L of 70% HNO 3 to be 1413
Explanation:
For example, certain medications may influence the results of the test.
Drug test can show the presence of illicit or prescription drugs on hair samples, although the person has not used these drugs.
Some of false positive drug use is because of this medications: antihistamines, decongestants, antibiotics, antidepressants, analgesics and antipsychotics.
Answer:
It declined drastically
Explanation:
The moths were active at night and rested by day on white birch trees, where they were effectively camouflaged from predators.
However, as the city became more industrialized, the trees were covered with black soot from the factories.
The white moths lost their camouflage, so their population declined drastically, as their predators could now find them more easily.
Answer:
true
Explanation:
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