Hi, i need these 3 answers to these question
what is the best prediction for what will h...
Hi, i need these 3 answers to these question
what is the best prediction for what will happen when all of the hydrogens in the sun has undergone fusion?
a. helium nuclei will split to form hydrogen, and the sun will no longer release energy.
b. helium nuclei will split to form hydrogen, and the sun will continue to release energy.
c. helium nuclei will fuse to create heavier elements, but the sun will no longer release energy.
d. helium nuclei will fuse to create heavier elements, and the sun will continue to release energy.
which fields would most likely make use of spectroscopy techniques? check all that apply.
1.food production
2.medical research
3.scientific research
4.space research
5.weather forecasting
ingrid drew a diagram to compare two ways in which biodiversity can be protected.
which label belongs in the area marked y?
a. has the goal of releasing animals into the wild
b. is often done in nature preserves
c. usually protects entire ecosystems
d. focuses on increasing the population of a single species
Answers: 2
Chemistry, 22.06.2019 14:30
Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?
Answers: 1
Chemistry, 22.06.2019 18:30
How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it
Answers: 3
Chemistry, 23.06.2019 03:00
Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative
Answers: 3
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