N2H4 (Hydrazine) is a rocket fuel, it burns in O2 to give N2 and H2O N2H4 + O2 N2 + 2H2O

1.00 g of n2h4 is burnt in a bomb calorimeter an increase of temperature 3.51° C is recorded. The specific heat of calorimeter is 5.5 J k⁻¹ g⁻¹ . Calculate the quantity of heat evolved also calculate the heat of combustion of one mole of N2H4

What is a scientific theory? a. a scientist's guess about how something works b. the results of an experiment obtained using the scientific method c. a proven fact that will never change d. an idea that is backed by data from many sources

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?