A. Mutualism
Mutualism: Both organism benefit
Commensalism: One organism benefits. One organism is unaffected
Parasitism: One organism benefits. One organism is harmed
Answer:
2 M
Explanation:
mole weight of CaBr2 = 40 + 2 * 79.9 = 199.8 gm
20 gm is then 20/199.8 =.1 mole
.1 mole / .50 liter = 2 M
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