3 years ago

The water cycle always follows the same pattern

Chemistry

2 answers:

strojnjashka [21]3 years ago

6 0

If it is a true or false questions, the answer is TRUE.

JulsSmile [24]3 years ago

6 0

The answer would be True

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Which of the following statements about functional groups is false? Group of answer choices The only functional group possible i

Alborosie

Answer: the false statement is:

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2 years ago

Nault 25000L 250 our = 25000L 15040 8. How many grams of CaCl2 are needed to make 150.0 mL of a 0.500 M CF solution? (Note: CaCl

yuradex [85]

Answer:

You need 8,324 g of CaCl₂ yo make this solution

Explanation:

Molarity is a way to express concentration in a solution, in units of moles of solute per liter of solution.

To know the grams of CaCl₂ it is necessary to know, first, the moles of this substance with the desired volume and concentration , thus:

0,1500 L × $\frac{0,500 mol}{L}$ = 0,075 CaCl₂ moles

Now, with the molar mass of CaCl₂ you will obtain the necessary grams, thus:

0,075 CaCl₂ moles × $\frac{110,98 g}{mol}$ = 8,324 g of CaCl₂

So, you need 8,324 g of CaCl₂ to make 150,0 mL of a 0,500M solution

I hope it helps!

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3 years ago

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borishaifa [10]

the environment is Healthy

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2 years ago

Write the equilibrium expression of each chemical equation. 2H2S(g) 2H2(g) + S2(g)

hodyreva [135]

Answer:

[H2]2[S2][H2S]2Kc=[H2]2[S2][H2S]2

Explanation:

2H2S(g)⇋2H2(g)+S2(g)2H2S(g)⇋2H2(g)+S2(g)

The equilibrium constant expression in terms of concentrations is:

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