If a question is asking about an opinion, it can be answered with science.

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What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.

How are the terms group and period used on the periodic table