Soil
profile
Soil
profile is the vertical sequence of the layers of soil. Furthermore, there are
actually six layers of the soil which involves the organic matter, -where most
humus is present-, surface soil, the subsoil, the parent rock, and the bedrock
as the innermost and core layer of the soil. In addition each soil layer has
three to four soil horizon. These horizons are the physical features of the soil,
mainly the texture, color and composition.
Answer: Wheel and axle
Explanation:
Wheel and axle is the best answer. Technically that's not the primary part that steers a vehicle though. A pulley is in the engine and I've never heard of wedge and first class lever. The question isn't too clear, but yea, I would pick ii if I was in your spot.
<u>Answer:</u>
concentration of H ions = 0.0001 M
<u>Explanation:</u>
Base 10 logarithm of the H+ concentration when multiplied by -1 is equal to the pH value of a solution. By reversing this formula, we can find the concentration of the H+ in the solution:
pH = ㏒
or = concentration of H+
We know that, pH of the solution is 4.0,
so =
Therefore, the concentration of Hydrogen ions in a solution of pH = 4 is 0.0001 M.
Answer:
Explanation:
Hello!
In this case, since the formula for the calculation of molarity is defined in terms of moles and volume in liters as shown below:
Whereas the moles are computed by considering the molar mass of CaCO3 (100.09 g/mol):
Thus, we obtain:
Best regards!
Here we need to see the differences between a liquid and a gas, and how that affects the volume and effects of pressure on them.
The correct option is:
Gases are more readily compressed than liquids are because there is more space between the particles in a gas than in a liquid.
So we have two syringes, one with air and the other with water.
The student applies the same amount of pressure to both of them, but as water is denser than air, in a given change dV of volume in the syringe, the mass of water is larger than the mass of air.
This means that for the same pressure, we should expect the change in volume to be smaller in the syringe with water.
Why this happens?
Gases are more readily compressed than liquids are because there is more space between the particles in a gas than in a liquid.
This means that for the air is easier to be compressed<em> (the distance between particles is larger, so the same pressure compresses more a gas than a liquid)</em> and exit the syringe than for the water, and this translates to the change in volume per unit of pressure applied, <u>which is larger for gases than liquids.</u>
If you want to learn more, you can read:
brainly.com/question/1898264