Answer:
dfghgvfdsrftgbnbvcdfvgbhnbvcxsdefrgthbvcxdsfgt
Explanation:
sdfgvfcdsertgyhbvcfxdsrftgh
After one half life, 188mg
46.9 mg of Ba-142
After 5 half lives
After 106 minutes
20 half lives , only 0.000358 mg remains
Hope this helps
Answer:
Explanation:
Fe₂O₃(s) + 3H₂(g) = 2Fe (s) + 3H₂O - 98.8 kJ .
one mole of ferric oxide reacts with 3 mole of hydrogen to give 2 mole of iron and 3 mole of water . 98.8 kJ of heat is absorbed .
Carbon dioxide is released when limestone is heated during the production of
. ✔
