Calculate δs°rxn for the following reaction. The s° for each species is shown below the reaction. C2h2(g) + h2(g) → c2h4(g) s°(j/mol • k) 200. 9 130. 7 219. 3.

Heights of men on a baseball team have a bell-shaped distribution with a mean of 177 cm and a standard deviation of 6 cm. using the empirical rule, what is the approximate percentage of the men between the following values? a. 159 cm and 195 cm b. 165 cm and 189 cm a. 89% of the men are between 159 cm and 195 cm. (round to one decimal place as needed.) b. 89% of the men are between 165 cm and 189 cm. (round to one decimal place as needed.)

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How do you work out 21.3-8= show your working. plz