Ask question

Ask question

All categories

tensa zangetsu [6.8K]

3 years ago

5

A change of unit on the pH scale represents a 10-fold change in hydronium ion concentration. How much greater is the hydronium i

on concentration in a substance with pH 2 than a substance with pH 5?
A.
3 times
B.
10 times
C.
100 times
D.
1000 times

1 answer:

Kisachek [45]3 years ago

6 0

100 times is the correct answer

You might be interested in

Democritus believed that matter is made up of tiny individual particles known as

cluponka [151]

<span>Democritus believed that matter is made up of tiny individual particles known as </span>Atoms

7 0

3 years ago

Read 2 more answers

Dr. Garcia is performing an experiment to see how cell division in flies is affected by the addition of a certain protein, calle

Paha777 [63]

<span>Dr. Garcia should compare fly cells to human cells.
</span>

3 0

3 years ago

Read 2 more answers

Why does inhaled air need to be warmed filtered and moistened?

bearhunter [10]

<span> The body has to do this to make sure and or to prevent damage to the delicate tissues that form the Respiratory System. This is important because </span>Your body's organs, such as your heart and brain, need oxygen-rich blood to work well. (if it gets damaged by the Cold/Dry air you breath in on a daily)<span><span>Respiratory failure </span>also can occur if your lungs can't properly remove carbon dioxide (a waste gas) from your blood. Too much carbon dioxide in your blood can harm your body's organs.

Hopefully i helped ^.^ please mark brainly if its a possibility~
</span>

4 0

3 years ago

PLEASE HELP I got this wrong on an exam but got it wrong and i don’t know why!

lord [1]

Answer:

D.5,55cm+/-0,005cm

Explanation:

so this is the answer

5 0

3 years ago

what is the volume of the air in a balloon that occupies 0.730 L at 28.0 c if the temperature is lowered to 0.00 C

svetoff [14.1K]

Answer:

The volume of the air is 0.662 L

Explanation:

Charles's Law is a gas law that relates the volume and temperature of a certain amount of gas at constant pressure. This law says that for a given sum of gas at a constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases because the temperature is directly related to the energy of the movement they have. the gas molecules. This is represented by the quotient that exists between volume and temperature will always have the same value:

$\frac{V}{T}=k$

If you have a certain volume of gas V1 that is at a temperature T1 at the beginning of the experiment and several the volume of gas to a new value V2, then the temperature will change to T2, and it will be true:

$\frac{V1}{T1}=\frac{V2}{T2}$

In this case:

V1= 0.730 L
T1= 28 °C= 301 °K (0°C= 273°K)
V2= ?
T2= 0°C= 273 °K

Replacing:

$\frac{0.730 L}{301K}=\frac{V2}{273K}$

Solving:

$V2=273K*\frac{0.730L}{301K}$

V2=0.662 L

<u><em>The volume of the air is 0.662 L</em></u>

6 0

3 years ago