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4 years ago

A liquid has a volume of 0.0088 L. Convert this volume to cubic centimeters.

Chemistry

1 answer:

pickupchik [31]4 years ago

7 0

Answer:

8.8 cm³

Explanation:

Data given:

volume of Liquid = 0.0088 L

convert volume to Cubic centimeters

Solution:

There are number of unit in which volume can be measured

Liter is unit of volume represented by L

Cubic centimeters represented by cm³

liter is larger value then cm³

Now to convert L to cm³

As we Know

1 L = 1000 cm³

Apply unity formula

1 L = 1000 cm³

0.0088 L = x cm³

Do Cross multiplication

x cm³ = 0.0088 L x 1000 cm³ / 1 L

x cm³ = 8.8 L.cm³ / 1 L

x cm³ = 8.8 cm³

So,

0.0088 L of liquid = 8.8 cm³

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Answer:

The correct answer is option b.

Explanation:

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$K_w=[H^+][OH^-]$

A pure water has equal concentration of hydrogen ions and hydroxide ions, hence neutral.

$K_w=[H^+][H^+]=[H^+]^2$

The ionic product of water at 283 K = $K_w=0.29\times 10^{-14}$

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$0.29\times 10^{-14}=[H^+]^2$

$[H^+]=5.385\times 10^{-8} M$

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3 years ago

How will you known that you have reached the equivalence point when titrating the NaOH solution with HCl?

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Answer:

When the solution (with phenolphthalein) changes to colorless

Explanation:

When titrating with HCl is common to add phenolphthalein as an acid-base indicator.

Phenolphthalein is pink or fucsia when added into a basic solution. On the other hand when it is in acid solutions, is colorless.

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C is becsuse it just souds right

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Answer:

3. turns pink and is basic

Explanation:

Phenolphthalein is a pH indicator that remains colorless in acidic solutions, but in basic solutions it turns pink at a pH equal to 10.

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3 years ago

Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.32 × 1014 Hz.

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Answer:

474 nm or 4.74 x 10^2 nm

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v = 6.32 × 1014 Hz = 6.32 × 1014 1/s

2.998 x 10^8 m/s = (λ)(6.32 × 10^14 1/s)

λ = (2.998 x 10^8 m/s) / (6.32 × 10^14 1/s)

λ = 4.74 x 10^-7 m

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3 years ago