Answer:
D
Explanation:
Both A and D are correct, because they will adapt from natural selection. Over time they will overcome the challenges of the new soil and be fine. however a few will die, but the best answer is D.
Explanation:
There are quite a number of ways to increase the solubility of substances.
Solution is a homogeneous mixture formed by dissolving a solute in a solvent.
Here are some things that can increase the rate of dissolution;
- Grinding/pulverizing - helps to increase the surface area for the solvent to react.
- Stirring - to bring more solvent in contact with the solute intimately.
- Heating - to facilitate dissolution of solute in solvents.
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When molality = no.of moles of solute/weight Kg of solvent
and when we have the no. of moles of solute = 8.1 moles
and the weight Kg of the solvent =4847 g /1000 = 4.847 Kg
so by substitution :
Molarity = 8.1m / 4.847Kg = 1.67 M
The type of bonding and the numbers of covalent bonds an atom can form with other atoms are determined by the unpaired electrons present in the valence shell. The electrons are called the valence electrons. These are the electrons that can participate in chemical bonding.