Answer:
C. transition elements
Explanation:
Transition elements are groups of metallic elements that have partially filled d orbitals. They occupy the d-block of the periodic table (Group 3-12). Examples of elements that fall under this category are Nickel (Ni), Cobalt (Co), Copper (Cu), Zinc (Zn) etc. Transition metals have outstanding properties that distinguishes them from other elements.
One of these properties is their ability to form colored compounds due to their unfilled d electron shells. They form ions that are usually colored in solid compounds and in solution.
Answer: b. acidic ocean water
Explanation:
Hey there!
It is evident that the problem gives the mass of the bottle with the calcite, with water and empty, which will allow us to calculate the masses of both calcite and water. Moreover, with the given density of water, it will be possible to calculate its volume, which turns out equal to that of the calcite.
In this case, it turns out possible to solve this problem by firstly calculating the mass of calcite present into the bottle, by using its mass when empty and the mass when having the calcite:
Now, we calculate the volume of the calcite, which is the same to that had by water when weights 13.5441 g by using its density:
Thus, the density of the calcite sample will be:
This result makes sense, as it sinks in chloroform but floats on bromoform as described on the last part of the problem, because this density is between 1.444 and 2.89. g/mL
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Regards!
Frost wedging
Explanation:
Weathering is the physical disintegration and chemical decomposition of rocks to form sediments and soils.
Some agents of weathering are wind, water, glacier and gravity.
- In physical weathering, rocks are broken down mechanically into smaller bit.
- Freezing and thawing allows for the propagation of physical weathering.
- Water within cracks will expand when they freeze significantly.
- This will further expand and widen the cracks.
- When the ice thaws the stress is relieved.
- When the process continues on and on over the year, a rock will eventually break down.
- This is common around the temperate and polar regions.
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weathering brainly.com/question/876569
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