What was the purpose of project mercury?
a.
to land on and explore the moon
b.
to orbit, rendezvous, and dock spacecraft
c.
to see if a man could survive in outer space and reenter the earth's atmosphere
d.
to test the effects of prolonged spaceflight on the human body

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees

Which chemical reaction shows photosynthesis? a. water + carbon dioxide + sunlight → oxygen + glucose b. carbon + oxygen → carbon dioxide c. hydrogen + oxygen → water d. nitrogen + hydrogen → ammonia

Use the drop-down menus to match each part of the scenario to the correct scientific practice. akira records the speed of a reaction without a catalyst and then with a catalyst. akira creates a reaction without a catalyst and repeats the reaction with a catalyst. akira turns in a written lab report to his science teacher. akira wonders, "will adding a catalyst speed up this chemical reaction? " akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowers the activation energy needed to get the reaction started.