Methane was unusually high is the correct option. Hence, option B is correct.
<h3>What is methane?</h3>
Methane is the simplest member of the paraffin series of hydrocarbons and is among the most potent greenhouse gases. Its chemical formula is 
.
As the ice compacts over some time, tiny bubbles of the atmosphere or surroundings including greenhouse gases like carbon dioxide and methane—press inside the ice. These air pocket “fossils” give samples of what the atmosphere was kind when that layer of ice formed.
Based upon past studies and insights from current GHG levels, we assume that atmospheric levels of carbon dioxide and methane were unusually low.
Learn more about methane here:
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Everything I'm reading says that both Gneiss AND Schist has a nonfoilated texture. Try one of them, sorry.
A=24
N(n)=13
N(p)=A-N(n)
N(p)=24-13=11
²⁴Na - sodium
atomic number is 11
Answer:
Conditions to Avoid: Natural gas is extremely flammable and explosive; avoid heat, sparks, open flames, and all possible sources of ignition. Heat will increase pressure in containers used to store natural gas.Jun 1, 2015
In determining a concentration, we need to convert the result into Grams / Liter
We already have the correct conversion of the weight , now we just need to convert the water volume into Liter :
185.8 / 1000 = 0.1858 L
The concentration is :
weight / volume
= 13.7 gram / 0.1858 L
= 73.73 gram/liter
