Answer:
South American
Explanation:
When you look at a map of plates, only South American forms a boundary with the African plate out of those specific plates
I think the number of protons in the nucleus the number of valence electrons atomic mass...
Hello!
An unknown gas has a pressure of 699.0 mm Hg at 40.0 C. What is the temperature at standard pressure ?
We have the following information:
P1 (initial pressure) = 699 mmHg
T1 (initial temperature) = 40 ºC (in Kelvin)
TK = TºC + 273.15 → TK = 40 + 273.15 → T1 (initial temperature) = 313.15 K
P2 (final pressure) = 1 atm (in STP) → P2 (final pressure) = 760 mmHg
T2 (final temperature) = ? (in Kelvin)
According to the Law of Charles and Gay-Lussac in the study of gases, we have an isochoric (or isovolumetric) transformation when its volume remains constant or equal, then we will have the following formula:
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I Hope this helps, greetings ... Dexteright02! =)
Answer: Y is Hydrogen.
Explanation: Based on the valence electrons, X and Y are Group 1 Elements and Y is a Halogen. Based on the differences between X and Y and the similarities between Y and Z, we can say that Y is Hydrogen, the only nonmetal with 1 valence electron. This is based on the fact that it has typical nonmetal characteristics: low melting and boiling points.