Fifty grams of water cooled from 50 'c to 10 'c. if the specific heat of water is 4.2 , how much heat was released ?

a) 480 j
b) 840 j
c) 4800 j
d) 8400 j

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

How have the competing explanations' experiments on atoms affected the development of the atomic model?

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o