Water (H2O) is a liquid at room temperature (22 °C) while methane (CH4) is a gas. Which BEST explains the difference in their phases of matter at room temperature?

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?

If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied

For the reaction i2(g)+br2(g)←−→2ibr(g), kc=280 at 150 ∘c. suppose that 0.450 mol ibr in a 2.00-l flask is allowed to reach equilibrium at 150 ∘c. what is the equilibrium concentration of 2ibr, i2, br2