Answer:
Phosphorous.
Explanation:
In 1649 Hennig Brand discovered phosphorous.
Answer:
Hypothesis and Data Collection
Part A-i think the glass with cold water will have more of a air bubble effect then the one with hot water
Part B-The glass with cold water is having more of a reaction but the water level in both of them are the same
Part C-yes, the glass with cold water had more of a reaction then the one with hot water
Analyze and Extend
Part A-yes, the glass with cold water had more of a reaction then the one with hot water
Part B-Becuase the reaction in the cold water was greater than the one in the hot water we can come to the conclusion that CO2 has a higher solubility in cold water
Part C-the soda that was left in the refrigerator wil have more "fizzing and bubbles" becuase it has higher solubility then the one left in the hot sun
Part D-There is now too much CO2 in the atmosphere and the tempertaures will continue to increase (this is why the summer time is hotter then the rest of the year)
Ik i was late to answer this but can you please give me brainliest
Answer:
Statement (E) is correct.
Explanation:
Both mass number and atomic mass are integer. Both are unit less.
Atomic mass is approximately equal to mass number of an atom with an unit of daltons or amu or u.
Mass number = number of protons + number of neutrons
So mass number of N = 7 +7 =14
So, atomic mass of n atom = 14 daltons
Hence statement (E) is correct.
<span>Answer:
I'm assuming the question is asking when it "jumps" from level 2 to level 1. In which case: 1/λ = Rh(1/nf^2 - 1/nfi^2) = 1.10x10^7 (1/1^2 - 1/2^2) = 1.10x10^7 ( 1 - 0.25) = 1.10 x10^7 (0.75) λ = 1.21 x 10^-7 m The wavelength produced will be about 1.21 x 10^ -7 m, or 121 nm.</span>
