Hydrazine (N2H4) emits a large quantity of energy when it reacts with oxygen, which has
led to its use as a fuel for rockets,
N2H4(ℓ) + O2(g) → N2(g) + 2 H2O(g).
How many moles of water are produced
when 22 g of pure hydrazine is ignited in the
presence of 87 g of pure oxygen?
Answer in units of mol.

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury

Nthis lab, you will do experiments to identify types of changes. using the question format you learned (shown above), write an investigative question that you can answer by doing these experiments