Well, ill keep it short but that would be 6.0 Liters under same conditions! :) Hope I helped you out!
Given data:
Concentration of stock solution which is the initial solution = M1 = 1.00 * 10^3 mg/L
Concentration of prepared solution i.e final solution = M2 = 6.250 mg/L
Volume of final solution, V2 = 5.000 * 10^2 ml
To determine:
The initial volume i.e. volume of the stock solution required = V1
Calculation:
Use the relation
M1V1 = M2V2
V1 = M2V2/M1 = 6.250 mg.L-1 * 5.000*10^2 ml/1.00 * 10^3 mg.L-1
V1 = 3.125 *10^3 ml
The volume of stock solution required is 3.125 *10^3 ml
The top soil would most likely be thicker in lush tropical area.
Explanation:
The top soil presents just above the earth's surface in the upper position of soil profile. It's thickness is 2 to 3 inches. Tropical area receives highest rainfall and direct sunlight which promotes the growth of lush vegetation that tightly holds the soil.
Dry region is devoid of vegetation. And it is free zone for air passing. With high speed wind top soil blow out from the upper surface and make surface bare. The thickness of soil in tropical area is maximum and pure.
Answer:
0.0125mol/dm³
Explanation:
Given parameters:
Mass of carbon dioxide = 0.22g
Volume of water = 400cm³
Unknown:
Concentration in mol/dm³ = ?
Solution:
Concentration is the amount of solute dissolved in a solvent.
The formula is expressed as;
Concentration =
Number of moles =
Molar mass of CO₂ = 12 + 3(16) = 44g/mol
Number of moles = = 0.0005mol
Now,
1000cm³ = 1dm³
400cm³ = = 0.4dm³
Insert the parameters and solve;
Concentration = = 0.0125mol/dm³
I found the rest of the exercise on the internet and these are the options.
"-Undifferentiated vertebrae throughout the body.
-One neck vertebra allowing up and down movement.
-Many neck vertebrae that allow for greater mobility.
<span>-Two neck vertebrae allowing up and down and sideways movement."
The correct answer would be the third. - "</span>Many neck vertebrae that allow for greater mobility." The <span>present-day organism with four limbs has a neck with several vertebrae that allow movements of rotation (mostly because of only two vertebrae at the top of the neck), and side way movements, as well as back and forth movements.</span>