To convert<span> among </span>units<span> in the </span>metric system<span>, identify the </span>unit<span> that you have, the </span>unit <span>that you want to </span>convert<span> to, and then count the number of </span>units<span> between them. If you are going from a larger </span>unit<span> to a smaller </span>unit<span>, you multiply by 10 successively.</span>
Answer:
Final temperature =78°C
Explanation:
The amount of heat lost is calculated using the formula for calculating the enthalpy change: mCΔT C, the specific heat capacity for for water is 4.186J/gK. The mass of water is 30 grams.
1500J= 30g×4.186J/gK×ΔT
ΔT=1500J/(30×4.186J/gK)
=11.94K
final temperature=(90-12)°C
=78°C
Answer:
The process or result of oxidizing or being oxidized.(Rust)
Explanation:
Pluto
54. fluorine
55. oxygen
56. they have the same number of protons
57. nucleus 3
Explanation:
54. The element represented by the nucleus 1 have 9 protons and 9 neutrons. The atomic number of the element is equal to the number of protons = 9, so the element is fluorine.
55. The element represented by the nucleus 2 have 8 protons and 10 neutrons. The atomic number of the element is equal to the number of protons = 8, so the element is oxygen.
56. nucleus 2 contains 8 protons and 10 neutrons
nucleus 4 contains 8 protons and 11 neutrons.
The atoms that have the same number of protons but different number of neutrons are called isotopes.
57. nucleus 3 have 10 protons and 10 neutrons and correspond to neon. Neon have 10 electrons (equal to the number of protons) and have the electronic configuration 1s² 2s² 2p⁸. Because all the electrons shells are filled with electrons, neon have a stable electron configuration.
Learn more about:
subatomic particles
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