2 years ago

What feature is forming ?

Chemistry

1 answer:

IRISSAK [1]2 years ago

3 0

Answer:

Earthquake

Explanation:

Notice how it is starting to shift allowing the earthquake to form.

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5. Which phase of matter can be defined as:

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Answer:

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How many moles of hydrogen sulfide are contained in a 77.7-8 sample of this gas?

valentina_108 [34]

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Explanation:

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QUESTION 1 (POLL)

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Explanation:

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2 years ago

A 0.8115 g sample of HCl was placed into a 50 mL volumetric flask and the sample was thoroughly dissolved in water to make 50 mL

inysia [295]

Answer:

Molarity of NaOH solution is 1.009 M

Explanation:

Molar mass of HCl is 36.46 g/mol

Number moles = (mass)/(molar mass)

So, 0.8115 g of HCl = $\frac{0.8115}{36.46}moles$ HCl = 0.02226 moles HCl

1 mol of NaOH neutralizes 1 mol of HCl.

So, if molarity of NaOH solution is S(M) then moles of NaOH required to reach endpoint is $\frac{S\times 22.07}{1000}moles$

So, $\frac{S\times 22.07}{1000}=0.02226$

or, S = 1.009

So, molarity of NaOH solution is 1.009 M

5 0

2 years ago