Asample of a pure compound containing c, h, and n, weighing 1.00 g, yields 2.84 g of carbon dioxide and 0.677 g of water when it reacts with excess oxygen. what is the simplest formula of the compound?

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point

What are several ways to reduce the effect of friction

Can anyone answer these questions? ? i need it before 1: 00pm today