All categories

3 years ago

Temperature Dependence of the pH of pure Water

Physics

1 answer:

Mamont248 [21]3 years ago

8 0

Answer:

At 100°C, the pH of pure water is 6.14. That is the neutral point on the pH scale at this higher temperature. A solution with a pH of 7 at this temperature is slightly alkaline because its pH is a bit higher than the neutral value of 6.14.

Explanation:

nonde

You might be interested in

An escalator carries you from one level to the next in an airport terminal. The upper level is 4.4m above the lower level, and t

horrorfan [7]

Answer:

Part a)

$W = 2716.5 J$

Part B)

$W = -2716.5 J$

Explanation:

Part A)

While escalator is moving up work done to move the person upwards is given as

$W = mgh$

here we know that

m = 63 kg

h = 4.4 m

now we have

$W = 63 \times 9.8 \times 4.4$

$W = 2716.5 J$

Part B)

Work done while we move from up to down

So we have

$W = - mgh$

so we have

$W = -2716.5 J$

6 0

3 years ago

1) Manipulate is to measure as

ValentinkaMS [17]

Answer: The variable that you manipulate is called the independent variable. The variable that you measure is called the dependent variable.

3 0

3 years ago

Andre is studying snails and how fast they travel. He observes three groups of snails containing four snails each. Here are the

Olin [163]

The material that the snails are moving on affects their speed. On a smooth material, (petri dish) the snails moved the fastest. On a rough material (sandpaper) the snails moved the slowest. On dirt, a compromise between smooth and rough, the snails moved at a medium pace. The material and possibly friction affect this.

4 0

3 years ago

A balloon is a sphere with a radius of 5.0 m. the force of air against the walls of the balloon is 45 n. what is the air pressur

Mazyrski [523]

The air pressure inside the balloon is: 0.1432 Pa

The formulas and procedures that we will use to solve this problem are:

a = 4 * π * r²
P = F/a

Where:

a = area of the sphere
r = radius
π = mathematical constant
P = Pressure
F = Force
a = surface area

Information about the problem:

r = 5.0 m
F = 45 N
1 Pa = N/m²
1 N = kg * m/s²
a=?
P=?

Using the formula of the sphere area we get:

a = 4 * π * r²

a = 4 * 3.1416 * (5.0 m)²

a = 314.16 m²

Applying the pressure formula we get:

P = F/a

P = 45 N/314.16 m²

P = 0.1432 Pa

<h3>What is pressure?</h3>

It is a physical quantity that expresses the force applied on the area of a surface.

Learn more about pressure at: brainly.com/question/26269477

#SPJ4

7 0

1 year ago

What is light energy

Oliga [24]

Light energy is defined as how nature moves energy at an extremely rapid rate, and it makes up about 99% of the body's atoms and cells, and signal all body parts to carry out their respective tasks. An example of light energy is the movement of a radio signal.

8 0

3 years ago