Answer:
Just make it sound right please it don't even add up what was you even thinking like come on now...lol
Explanation:
What does this mean I don't understand your question.
At room temperature, number of moles of distilled water is 1 x10^-7. Hope it cleared your doubt.
Answer:Sources of lead emissions vary from one area to another. At the national level, major sources of lead in the air are ore and metals processing and piston-engine aircraft operating on leaded aviation fuel. Other sources are waste incinerators, utilities, and lead-acid battery manufacturers. The highest air concentrations of lead are usually found near lead smelters.
Explanation: