31.Physical properties of CO2 is A. Fairly soluble in water
C. Only a

B. 1.5 times heavier than air
D. Both a and b​

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

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

Convert a speed of 201 cm/s to units of inches per minute. also, show the unit analysis by dragging components into the unit‑factor slots.