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monitta
4 years ago
8

What can affect the properties of a substance?

Chemistry
2 answers:
Helen [10]4 years ago
8 0
The way the atoms are formed when coming together.
Svetllana [295]4 years ago
4 0

Answer:

The arrangement and types of atoms.

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Which of the following particles are the least massive in comparison to the others?
Gekata [30.6K]

Answer:

The majority of an atoms' mass comes from the protons and neutrons that make up its nucleus. Electrons are the least massive of an atom's constituent particles, with a mass of 9.11 x 10-31 kg and a size too small to be measured by current techniques.

Explanation:

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3 0
3 years ago
It is a hot summer day. You fill your glass with ice and pour in some sweet tea. What form of energy is found in the ice cubes?
vlabodo [156]
I think the form energy that is found in the ice cubes would be thermal energy. It <span> is the </span>energy<span> that comes from heat. Since all things tend to go towards equilibrium, the ice cubes dissipates heat to equilibriate with the environment.</span>
4 0
4 years ago
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Which substance has AHf defined as O kJ/mol?
Andru [333]

Answer:

(C). is the answer, I think

5 0
3 years ago
Which of these is not a structural adaptation? A) Horns B) Thick white fur C) Seasonal migration D) A long beak
Snezhnost [94]

Answer:

c) Seasonal migration

Explanation:

Because A, B and C are all examples of structural adaptations. And seasonal migration is not something that is in an animals structure but is instinct.

Have a great day!

6 0
3 years ago
If helium effuses through a porous barrier in 1.34 min, how much time (in min) would it take the same amount of ammonia to effus
timofeeve [1]

Answer:

The time taken the same amount of ammonia to effuse through the same barrier under the same conditions is 2.76 minutes.

Explanation:

Let the volume of the helium gas be = V

Time taken by the helium gas = t = 1.34 min

Effusion rate of helium gas = R=\frac{V}{1.34 min}

If V volume of ammonia effuse through same porous barrier the effusion rate of ammonia gas will be given as:

R'=\frac{V}{t'}

Using Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

Molar mass of helium gas = M = 4 g/mol

Molar mass of ammonia gas = M' = 17 g/mol

\frac{R}{R'}=\sqrt{\frac{M'}{M}}

\frac{\frac{V}{1.34 min}}{\frac{V}{t'}}=\sqrt{\frac{17 g/mol}{4 g/mol}}

t'=1.34 min\times \sqrt{\frac{17 g/mol}{4 g/mol}}=2.76 min

The time taken the same amount of ammonia to effuse through the same barrier under the same conditions is 2.76 minutes.

8 0
3 years ago
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