Normal ph of water and rainwater

Which experimental evidence supports Ernest Rutherford's theory that the atom is mostly empty space? Positively charged particles shot into gold foil are deflected by the foil.

Select the correct text in the passage. Which sentence incorrectly describes the formation of petroleum About 300 million years ago, the seas and oceans were inhabited by tiny plants and other organisms.

each liter of hydrazine, N2H4, has enough hydrogen for two liters of water." There is a huge error Watney's estimation, what is it? (Hint: think phases and Avagadro's Gas Law) Each gram of hydrazine will produce 2 grams of water.

How to calculate how much acetic acid should be theoretically yielded from a process that is 75% efficient and actually yields 500.0 ml (Assume the Density of acetic acid = 1.05 g/ml)

When solid (NH4) (NH2CO2) (NH4) (NH2CO2) is introduced into and evacuated flask at 25∘C25∘C, the total pressure of gas at equilibrium is 0.30.3 atm. What is the value of Kpat25∘CKpat25∘C?

The reaction CH3NC? CH3CN is called an isomerization reaction andinvolves the breaking of a C-N bond and subsequent formation of a C-C bond-the reactant andproduct have the same molecular formulas and so are isomers.

Following my previous question: How is it possible for one substance to act both polar and non-polar? How is the polar/non-polar nature of a substance useful?

How is petrol separated from the mixture of hydrocarbons in crude oil?

The following chemical reaction takes place in aqueous solution: MgBr2 (aq) + 2KOH (aq) →Mg (OH) 2 (s) + 2KBr (aq) Write the net ionic equation for this reaction.

How many molecules are in 1.2 moles of H20?