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3 years ago

5

In a solution there is usually more __than _ A) solute/solvent B) soluble/insoluble C) saturation/unsaturati

on D) solvent/solute

1 answer:

Elan Coil [88]3 years ago

5 0

Answer:

I think the answer is option 3

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In a titration of 50 ML of 0.20m NaOH is used to neutralize 10.0 ML of HCL. Calculate the molarity of the acid

Svet_ta [14]

Answer:

1M

Explanation:

First, let us write a balanced equation for the reaction. This is illustrated below:

NaOH + HCl —> NaCl + H2O

From the equation above,

nA (mole of acid) = 1

nB (mole of the base) = 1

Data obtained from the question include:

Vb (volume of base) = 50mL

Mb (Molarity of base) = 0.2M

Va (volume of acid) = 10mL

Ma (Molarity of acid) =?

Using MaVa/MbVb = nA/nB, we can calculate the molarity of the acid as follow:

Ma x 10/0.2 x 50 = 1

Cross multiply to express in linear form

Ma x 10 = 0.2 x 50

Divide both side by 10

Ma = (0.2 x 50)/10

Ma = 1M

The molarity of the acid is 1M

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3 years ago

Water from a riverbed carries sediment downstream. The water pressure cuts deep into the riverbed, creating a deep, narrow chann

atroni [7]

Answer:

A canyon has formed.

Explanation:

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3 years ago

Which of the following is not a reason for creating hybrid plants?

Softa [21]

I say C because why would you want a plant to resist something that helps it grow? A, B, and D make sense because those can improve the quality of the plant, but fertilizer can improve plant quality and help it grow. So there is no reason to resist it.

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3 years ago

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Why does sound travel at different speeds through various materials?

bazaltina [42]

Answer:

It is easier for sound waves to go through solids than through liquids because the molecules are closer together and more tightly bonded in solids.

Explanation:

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3 years ago

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How much heat will be absorbed by a 26.3 g piece of aluminum (specific heat = 0.930 J/g･°C) as it changes temperature from 23.0°

kotykmax [81]

Answer:

$\boxed {\boxed {\sf 1076.196 \ Joules}}$

Explanation:

Since we are given the mass, specific heat, and temperature, we should use the following formula for heat energy.

$q=mc\Delta T$

The mass of the aluminum is 26.3 grams. Its specific heat is 0.930 Joules per gram degree Celsius. We need to find the change in temperature.

The change in temperature is the difference between the initial temperature to the final temperature.
The temperature changes <em>from</em> 23.0°C <em>to</em> 67.0°C, so the initial is 23 degrees and the final is 67 degrees.
ΔT= final temperature - initial temperature
ΔT= 67°C - 23°C
ΔT= 44°C

Now we know all the values.

m= 26.3 g
c= 0.930 J/g °C
ΔT= 44°C

Substitute the values into the formula.

$q= (26.3 \ g}) \times (0.930 \ J/g \textdegree C) \times (44 \textdegree C)$

Multiply the first two numbers together. The units of grams cancel.

$q= 24.459 \ J/ \textdegree C \times 44 \textdegree C$

Multiply again. This time, the units of degrees Celsius cancel.

$q=1076.196 \ J$

<u>1076.196 Joules</u> of heat will be absorbed by the piece of aluminum.

4 0

3 years ago