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Bogdan [553]
4 years ago
5

Why did rutherford conclude from his gold foil experiment that an atom is mostly comprised of empty space?

Chemistry
1 answer:
Nady [450]4 years ago
6 0
'cause many alpha-particle goes without any deflection........
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Imagine a balloon is made from a membrane that's permeable to water but not sucrose molecules. How would the balloon be affected
Arlecino [84]

Answer:

The balloon would get larger as it gains water

Explanation:

Due to the process of osmosis, water molecules would passively move from an area of lower solute concentration, the water in the beaker, to an area of higher solute concentration, inside the balloon.

8 0
4 years ago
How do you know the ph level of 10^-8
sergiy2304 [10]

pH=6.98

Explanation:

This is a very interesting question because it tests your understanding of what it means to have a dynamic equilibrium going on in solution.

As you know, pure water undergoes self-ionization to form hydronium ions, H3O+, and hydroxide anions, OH−.

2H2O(l]⇌H3O+(aq]+OH−(aq]→ very important!

At room temperature, the value of water's ionization constant, KW, is equal to 10−14. This means that you have

KW=[H3O+]⋅[OH−]=10−14

Since the concentrations of hydronium and hydroxide ions are equal for pure water, you will have

[H3O+]=√10−14=10−7M

The pH of pure water will thus be

pH=−log([H3O+])

pH=−log(10−7)=7

Now, let's assume that you're working with a 1.0-L solution of pure water and you add some 10

5 0
3 years ago
Which temperature represents the highest average kinetic energy of the particles in a sample of matter ?
Genrish500 [490]

Answer: Option C is correct.

Explanation: Average kinetic energy is directly proportional to the absolute temperature. Higher the temperature means higher the kinetic energy.

Average kinetic energy is given by:

K.E._{avg}=\frac{3kT}{2}

Where, k = Boltzman constant

T = Temperature

We are given different temperatures, so to compare they all should have the same units.

a) 298K

b) 267K

c) 27°C = 273+27 = 300K

d) 12°C = 273+12 = 285K

Looking at the temperature values, C part will have the highest average kinetic energy.

3 0
3 years ago
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David walks 10 Km North. He turns East and walks 10 more Km. What is his distance
BigorU [14]

Answer:

20 km

Explanation:

he walks 10 km + another 10 km so 20 :)

3 0
3 years ago
Explain the relationship between the absolute temperature of a substance and the kinetic energy of its particles.
arlik [135]
The absolute temprature is the limit to the highest and lowest temprature while the kinetic energy is the amunt of energy acquired by molecule to aid movement
4 0
3 years ago
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