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motikmotik
2 years ago
11

What is the cause of rising surface temperatures of the Pacific Ocean, drought in the Western United States, flooding on the pac

ific coast of south America?
A-the Gulf Stream
B-the Jet Stream
C-La Nina
D-El Nino
Chemistry
1 answer:
stira [4]2 years ago
8 0
Pretty sure it's D. El Nino but not positive.
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b

Explanation:

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Suppose you need to prepare 136.9 mL of a 0.315 M aqueous solution of NaCl.
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Answer:

2.52 g NaCl

Explanation:

(Step 1)

To find the mass, you first need to find the moles NaCl. This value can be found using the molarity ratio:

Molarity = moles / volume (L)

After you convert mL to L, you can plug the given values into the equation and simplify to find moles.

136.9 mL / 1,000 = 0.1369 L

Molarity = moles / volume

0.315 M = moles / 0.1369 L

0.0431 = moles

(Step 2)

Now, you can use the molar mass to convert moles to grams.

Molar Mass (NaCl): 22.990 g/mol + 35.453 g/mol

Molar Mass (NaCl): 58.443 g/mol

0.0431 moles NaCl           58.443 g
------------------------------  x  -------------------  =  2.52 g NaCl
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4 0
2 years ago
How many liters of CO2 are formed by burning 7 x 1025 molecules of C2H4 with excess oxygen?
S_A_V [24]

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ESTA!!!!1

Explanation:

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