According to the Guinness Book of world records, the heaviest zucchini ever grown weighed 64.5 lb. What is the mass of this giant squash in micrograms (ug)? For reference, there are 453.592 grams (g) per pound (lb). Write your answer in scientific notation

Ineed with my science work! it’s due tomorrow!

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Which of the following nuclei would be the least stable a 2 protons, 2 neutrons b 1 proton 1 neutron c 1 proton 3 neutrons d 1 proton 2 neutrons