The ancient greeks thought that the earth was composed of earth, water, fire, and air.
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Pb(NO₃)₂(aq) + 2NaI(aq) → 2NaNO₃(aq) + PbI₂(s)
PbI₂ (the precipitate)
You multiply 6.50 by the molar mass of H2SO4.
Answer:
The devise used to convert thermal energy to mechanical energy are called heat enignes
The speed of light in a vacuum stands at “exactly 299,792,458 metres per second“. The reason today we can put an exact figure on it is because the speed of light in a vacuum is a universal constant that has been measured with lasers; and when an experiment involves lasers, it's hard to argue with the results.
