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kotegsom [21]
3 years ago
7

Help please due today

Chemistry
1 answer:
scoundrel [369]3 years ago
7 0

Edit : OPTION C is the answer

Option B is the best, Even though the cost is 30 Billion it essentially takes Lesser time to construct. For Plan A, They would have to construct the overground railway and then take a lot of time and effort to create wildlife corridors and then plant trees. Plan B takes much less time compared to plan A and might as well have a lesser impact on the environment!

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Which transition metals are paramagnetic but can easily form ferromagnetic alloys with other metals?
Brrunno [24]

Answer: Paramagnetism is most easily observed in the salts of some of the first row transition metals (manganese through nickel). The se metal ions have unpaired electrons in degenerate d orbitals as predicted by Hund's rule and thus exhibit paramagnetism.

Explanation: METALS ARE ELECTRONS

AND PARAMAGNETIC OBSERVES SALT FORST ROWS ONLY

6 0
3 years ago
1. When you have 43 grams of sodium, how many grams of NaCl can you produce?
seropon [69]

Molar mass is the amount grams that one mole weighs.

Explanation: You need to find the molar mass of NaCl which is the same as the amu on the periodic table in grams. So it is 22.99(Na) + 35.45(Cl) = 58.44

You also know that for every mole of NaCl you have 1 mole of Na because every molecule of NaCl has 1 atom of Na.

Finally, using the periodic table, again, you see that the molar mass of Na is 22.99.

Then using stoichiometry, you can find the grams of sodium.

100(g NaCl) * 1 mol (NaCl)/58.44 g (NaCl) * 1 mol (Na)/ 1 mol (NaCl) * 22.99 (g of Na)/ 1 mol (Na)

which equals 39.339435 g of Na.

If you need to maintain significant figures the answer will be 40.

hope this helps

6 0
3 years ago
3. Which is not a disturbance of an ecosystem?
Lyrx [107]
A decomposer is not a disturbance of the ecosystem because it decomposes dead animal bodies and recycles it into the soil which helps the food chain work
3 0
3 years ago
Which statement correctly compares the sun and planets? A. Planets have an atmosphere; the sun does not. B. Planets gives off en
likoan [24]

Answer:

c

Explanation:

because the sun is at the center of the universe the planet orbit the sun its basically a simple answer so if you need more help im right here

8 0
3 years ago
The reaction of 2-methylbutane with chlorine would yield how many monochloro derivatives (include stereoisomers)?
zimovet [89]
The reaction  of  2  methylbutane  with   chlorine  yield  5 monochloro  derivative.   Methylbutane  has  four  carbon  atoms  which  react with   chlorine.  The  carbon  with antibonding  will  be  chiral   and  it  will react  with  chlorine. there  will  be  four  difference  group  around  chiral  carbon  hence  it  will  have  stereoisomers.
7 0
3 years ago
Read 2 more answers
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