Answer:
There are two major ways that molecules can be moved across a membrane, and the distinction has to do with whether or not cell energy is used. Passive mechanisms like diffusion use no energy, while active transport requires energy to get done.
Explanation:
multiply by (6.02 times 10^23 atoms)/(1mole, cancel out atoms)
Answer:
The volume of carbon (ii) oxide present is <u><em>2.80 L</em></u>
Explanation:
In this question, we are asked to calculate the volume of a certain number of moles of carbon (ii) oxide sealed in a container at STP
The equation to use here is the ideal gas equation.
Mathematically;
PV = nRT
since we are to calculate the volume, the equation can be re-written as
V = nRT/P
The values according to the question are as follows;
n is the number of moles which is 0.125 moles
T is the temperature at STP which is 0°C = 273.15 K(kelvin)
P is the pressure at STP which is 1.0 atm (atmosphere)
R is the molar gas constant which is 0.0821 L.atm.
Plugging these values, we have
V = (0.125 × 0.0821 × 273.15)/1 = 2.80 L
Answer: Water inside the seed coat creating a pushing force, breaking the seed coat.
Explanation:
Seed germination can be defined as the process by which a new plant emerge out from a seed. The radicle is the first emerging part from a seed and it develops into a root and the plumule is the second emerging part and it develops into a shoot. The light, water, adequate temperature, and soil are the factors that are necessary for seed germination.
According to a given situation, the popcorn kernel will receive the moisture necessary for the germination process, the water will imbibe into the seed coat creating pressure inside the seed and which will cause the seed coat to break and the new plant parts or seedling will emerge out of the seed coat.
Answer:
17
Explanation:
The atomic number is the number of protons in an element. This atom has 17 protons and 18 neutrons. So, the atomic number of this element would be 17.