C
high specific heat capacity means water stores a lot of heat
when it is hot outside, water stores the heat, causing it to not be as hot as it could be without water
when it is cold outside, the heat from inside the water is transfered outside so that the temperature isn't as cold as it could be
so A and B are wrong (opposite)
In the case of internal temperature, the high specific heat of water should prevent variation, but I'm not too sure
Answer:
CaCl₂.6H₂O
Explanation:
- If we suppose that the compound has a mass of 100.0 g, it will contain 18.29 grams of Ca, 32.37 grams of Cl, and 49.34 grams of water.
- We can convert the grams of each element to moles by dividing the number of grams by the atomic mass of each element.
No. of moles of Ca = (18.29 g) / (40.0 g/mol) = 0.457 mol.
No. of moles of Cl = (32.37 g) / (35.4 g/mol) = 0.914 mol.
No. of moles of H₂O = (49.34 g) / (18.0 g/mol) = 2.74 mol.
- The no. of moles of (Ca: Cl: H₂O) is (0.457 mol: 0.914 mol: 2.74 mol).
- To obtain the ratio of the elements in the compound, we divide over the lowest no. of moles (0.475).
So the mole ratio of (Ca: Cl: H₂O) is (1: 2: 6).
So, the formula of the compound is CaCl₂.6H₂O.
I believe it is the third option :)
Answer: True
Explanation:
Physical change is a change in which there is no rearrangement of atoms and thus no new substance is formed. There is only change in physical state of the substance.
Chemical change is a change in which there is rearrangement of atoms and thus new substance is formed. There may or may not be a change in physical state.
Slowly heating butter in a pan until it changes from a solid to a liquid is an example of a physical change is true as solid changes to liquid state and there is no breaking or making of chemical bonds.
Answer:
Hey,
So what you would do here is first choose a biome, such as the desert for example, then choose an organism that lives there, or an animal. Then think of what it is like where it lives, is it dry, cold, windy, and so force, just describing the place by its looks and climate. How would this population increase, maybe it would be if there was suddenly more food there for them, or if their ecosystem got better for them to live, then, if they populated more, how would that affect the ecosystem. Maybe some animals would die off more, or some would have to much food. Like what if the fly population suddenly doubled, for example, how would that affect the ecosystem? Now what would happen if that organism was removed? If flies were removed, spiders and a lot of other organisms would not have food, and some organisms would overpopulate because nothing would eat them. That is just an example.
Explanation:
I hope this helps, sorry if not. Have a great day!
