13. Which chemical equation below shows a combination (or synthesis) reaction? *
O a) 2KCIO3 ---> 2KCI + 302
b) C+02---> CO2
о
c) 2H20 --> 2H2 + O2
O d) Naci > Na + CI

Why should the scientific method be used to answer a question? a. it provides a way to test an idea without any bias. b. it provides a way to test a hypothesis. c. it provides a way to ensure all hypotheses are proven correct. d. it provides a way to quickly turn a hypothesis into a scientific theory.

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

When balancing a chemical equation: