Chemistry, 18.12.2019 20:31, benwill0702
The purpose of photosynthesis is to produce usable chemical energy or glucose from solar energy. if the formula for glucose is c6h12o6, how many atoms of carbon are used to produce the glucose?
a) 1
b) 2
c) 6
d) 9
during chemistry lab, mrs. black’s students placed an antacid tablet in a zip lock bag. they recorded the mass of the tablet in the bag. then they carefully added 50 grams of water and quickly sealed the bag. the tablet began to fizz and soon disappeared. the bag was filled with gas and it felt cold to the touch.
what type of change occurred in the bag and how can you support your answer?
a) it is a physical change because the tablet dissolved.
b) it is a physical change as evidenced by change in temperature.
c) it is a chemical change due to the change in temperature and gas production.
eliminate
d) it is a chemical change because the tablet dissolved and the temperature of the liquid dropped.
Answers: 1
Chemistry, 22.06.2019 09:00, valeriekbueno
If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?
Answers: 1
Chemistry, 22.06.2019 12:00, sophiaa23
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.
Answers: 2
The purpose of photosynthesis is to produce usable chemical energy or glucose from solar energy. if...
Mathematics, 04.10.2021 18:10
English, 04.10.2021 18:10
Mathematics, 04.10.2021 18:10
Computers and Technology, 04.10.2021 18:10