There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac 2 (s) + 2 h 2 o (g) → c 2 h 2 (g) + ca oh 2 (s) in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6 c 2 h 2 (g) + 3 co 2 (g) + 4 h 2 o (g) → 5 ch 2 chco 2 h (g) write the net chemical equation for the production of acrylic acid from calcium carbide, water and carbon dioxide. be sure your equation is balanced.

Construct the hypothetical phase diagram for metals a and b between room temperature (20c) and 700c, given the following information: * the melting temperature of metal a is 480c. • the maximum solubility of b in a is 4 wt% b, which occurs at 420c. • the solubility of b in a at room temperature is 0 wt% b. • one eutectic occurs at 420c and 18 wt% b–82 wt% a. • a second eutectic occurs at 475c and 42 wt% b–58 wt% a. • the intermetallic compound ab exists at a composition of 30 wt% b–70 wt% a, and melts congruently at 525c.• the melting temperature of metal b is 600c. • the maximum solubility of a in b is 13 wt% a, which occurs at 475c. • the solubility of a in b at room temperature is 3 wt% a.

List four observations that indicate that a chemical reaction may be taking place

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's