Answer:
300K.
Explanation:
The following data were obtained from the question:
Initial volume (V1) = 300L
Initial temperature (T1) = 200K
Final volume (V2) = 450L
Final temperature (T2) =..?
Since the pressure is constant, the gas is obeying Charles' law.
Using the Charles' law equation, we can obtain the new temperature of the gas as follow:
V1/T1 = V2/T2
300/200 = 450/T2
Cross multiply to express in linear form
300 x T2 = 200 x 450
Divide both side by 300
T2 = (200 x 450)/ 300
T2 = 300K
Therefore, the new temperature of the gas is 300K.
Since the reaction gives off heat energy it is considered to be an exothermic reaction
Answer:
The answer to your question is Protons = 36, Neutrons = 26, Electrons = 36
Explanation:
⁷⁰Se²⁻
The number of protons is equal to the atomic number, Selenium has an atomic number of 34. Then the number of protons = 34.
The number of neutrons = Mass number - number of protons
= 70 - 34
= 36
The number of electrons = number of protons + 2 because of the 2- next to the symbol of Selenium.
Number of electrons = 34 + 2
= 36
Answer
2.1 x 10 ^23
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The answer is B. scavenger
