Which of the following shows a chemical reaction in which sulfur tetrafluoride and water are the reactants and hydrogen fluoride and sulfur dioxide are the products?

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !

Which of the following is a true statements about viruses? viruses have no nucleus. viruses are alive. viruses have a cell membrane. all viruses are deadly.