An al-l% cu ingot is solidified with no convection at 3 x 10-4 cm/s, with a thermal gradient of 300°c/cm. solidification is cellular. (see the data in prob. 3-2). 3-6 3-7 3-8 3-9 3-10 3-il (a) what is the approximate liquid composition at the cell tips? the solid composition? (b) what is the temperature of the cell tips? (c) what is the distance from the cell tips to the cell roots? (d) how far does characteristic distance of the diffusion boundary layer extend in front of the cell tips

2b2t

explanation:

2b2t

answer seismograph;

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o