Calculate the amount of heat released when 27.0 g h2o is cooled from a liquid at 314 k to a solid at 263 k. the melting point of h2o is 273 k. other useful information about water is listed below.
cp, liquid = 4.184 j/(g•k)
cp, solid = 2.093 j/(g•k)
δhfusion = 40.7 kj/mol

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i