Answer:
Mass = 9.8 g
Explanation:
Given data:
Molarity of solution = 0.2 M
Volume of solution = 500 mL
Number of grams of phosphoric acid = ?
Solution:
First of all we will convert the volume milliliter to litter.
500 mL × 1 L/1000 mL
0.5 L
Molarity = moles of solute / volume in litter
0.2 M = number of moles / volume in litter
Number of moles = 0.2 mol/L × 0.5 L
Number of moles = 0.1 mol
Number of grams:
Number of moles = mass/molar mass
Mass = number of moles × molar mass
Mass = 0.1 mol × 98 g/mol
Mass = 9.8 g
The correct answer would be the second option. Four of these 25 elements that make up approximately 96% of living matter are carbon, hydrogen, nitrogen, oxygen. The elements carbon and hydrogen are the backbone for organic compounds which is the foundation of cells that are present in all living matter. Also, the cells in all living matter are made up of protein which are primarily made up of amino acids which contains nitrogen, oxygen, carbon and hydrogen atoms. So, basically, without these elements in the cells all living matter would not be present and there would be no life in any case.
Answer:
The correct answer is option B, that is, western boundary currents.
Explanation:
The Western boundary currents get deflected by the eastern coastline of the continents. The western boundary currents refer to the deep, warm, narrow, and fast flowing currents, which produce on the west end of the ocean basins because of the western intensification. They conduct warm water from the tropics poleward. Some of the examples of western boundary currents are the Agulhas current, Gulf Stream, and the Kuroshio.
The paleoatmosphere refers to the Earth’s atmosphere
in the geological past. The paleoatmosphere was dominated by nitrogen, carbon
dioxide and methane. These gases are generated by the radioactive decay of
Potassium. During this pre-biological atmosphere, it is thought to have been
reducing, to have highly contained virtually no free oxygen, and virtually no
argon. Therefore the major gases on this period are the Nitrogen and Carbon Dioxide.
