How many grams of HF are produced from the reaction shown below if 5.0 g of Hy is used? 2 BF3+ 3 H2 → 2 B + G HF​

The three types is stress that act on earths rocks are compression, tension, and

How many moles are in 43.9 l of oxygen

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?