Find the theoretical yield of silicon carbide if 50 g of silicon dioxide reacts with 79.1 g of carbon

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ? c. what would the pressure be if the container was heated to 92 ? c ?

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains