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pennygillbert
30.06.2019 •
Health
Lea wants to maintain strong bones as she ages. which home strengthening activity should she incorporate into her current plan
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Ответ:
good calcium and vitamin d consumption along with complete cardiovascular work out a couple times a week for about 45 min or more, if she doesnt leave the house very much.
Explanation:
Ответ:
The unit cell edge length for the alloy is 0.405 nm
Explanation:
Given;
concentration of Ag,
= 78 wt%
concentration of Pd,
= 22 wt%
density of Ag = 10.49 g/cm³
density of Pd = 12.02 g/cm³
atomic weight of Ag,
= 107.87 g/mol
atomic weight of iron,
= 106.4 g/mol
Step 1: determine the average density of the alloy
Step 2: determine the average atomic weight of the alloy
Step 3: determine unit cell volume
for a FCC crystal structure, there are 4 atoms per unit cell; n = 4
Step 4: determine the unit cell edge length
Vc = a³
Therefore, the unit cell edge length for the alloy is 0.405 nm