3 years ago

What is thermal energy, and how can thermal energy be measured?

Chemistry

1 answer:

Dovator [93]3 years ago

4 0

Answer:

hope this helps :)

Explanation:

The thermal energy of an object is the energy contained in the motion and vibration of its molecules. Thermal energy is measured through temperature

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Which of the following will increase the rate of disolving?

Fantom [35]

Answer:

I have no idea bro

Explanation:

I feel you

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3 years ago

Red, green and blue light all have the same frequency and wavelength. True or false

Sedaia [141]

False, they are all different because they help you know different things.

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2 years ago

A monoprotic weak acid when dissolved in water is 0.66% dissociated and produces a solution with a pH of 3.04. Calculate the Ka

raketka [301]

Answer:

Ka = 6.02x10⁻⁶

Explanation:

The equilibrium that takes place is:

HA ⇄ H⁺ + A⁻

Ka = [H⁺][A⁻]/[HA]

We calculate [H⁺] from the pH:

pH = -log[H⁺]

[H⁺] = $10^{-pH}$

[H⁺] = 9.12x10⁻⁴ M

Keep in mind that [H⁺]=[A⁻].

As for [HA], we know the acid is 0.66% dissociated, in other words:

[HA] * 0.66/100 = [H⁺]

We calculate [HA]:

[HA] = 0.138 M

Finally we calculate the Ka:

Ka = $\frac{[9.12x10^{-4}]*[9.12x10^{-4}]}{[0.138]}$ = 6.02x10⁻⁶

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2 years ago

In 1865 a pond was surrounded by open fields today the same area is swampy and surrounded by a forest which process is responsib

Nookie1986 [14]

Answer:

erosion

Explanation:

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2 years ago

Read 2 more answers

A researcher recorder that a chemical reaction require 2.90 gal water and raised the temperature of the reaction vessel by 57°F.

Ivan

Answer:

10.875L

Explanation:

The problem here is a simple conversion. The conversion is from gal to liters Liter is a SI unit for recording volume as stated in the problem.

Given that:

1 gallon of water = 3.75L

2.90 gallon will be 2.9 x 3.75; 10.875L

4 0

3 years ago