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Aleksandr [31]
3 years ago
13

What ions represent an acid? What ions represent a base?

Chemistry
1 answer:
ira [324]3 years ago
3 0

Answer:

Acid: H^+ Base: OH^-     Have a great day.....

Explanation:

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the grams of carbohydrate in one apple if the apple has no fat and no protein and provides 72 kcal of energy
sergeinik [125]
<span>Carbohydrates have 4 kcal per gram of carbohydrates. (Protein is also 4 kcal/gram, while fat is 9 kcal/gram). Take the total kcal and divide by 4 kcal/gram: 72 kcal/(4 kcal/gram) = 18 grams carbohydrates.</span>
5 0
3 years ago
A sound wave has a wavelength of 0.450
Karolina [17]

Answer:

The wave's frequency is <u><em>733 hertz</em></u>.

Explanation:

The wavelength (λ) is the minimum distance between two points of the wave that are in the same state of vibration.

Frequency (f) is the number of vibrations that occur in a unit of time.

The speed of propagation (v) is the speed with which the wave propagates in the middle. Relate wavelength (λ) and frequency (f) inversely proportionally using the following equation: <em>v = f * λ</em>.

In this case you know that:

  • Wavelength of the sound wave (λ) = 0.450 meters
  • Speed of the sound wave (v)= 330 meters per second= 330 \frac{meters}{second}

Replacing you get:

330 \frac{meters}{second} = f* 0.450 meters

Then:

f=\frac{330 \frac{meters}{second} }{0.450 meters}

f=733.33 hertz≅733 hertz

Finally,  <u><em>the wave's frequency is 733 hertz.</em></u>

6 0
3 years ago
Cu + H2O --&gt; CuO + H2
bazaltina [42]
In the reduction-oxidation reaction given, Cu is reduced because it gained 2 electrons, on the other hand H2 is oxidized because it gained one electron. I hope this helps.
5 0
3 years ago
Read 2 more answers
What are the big differences between physical and chemical properties?
zysi [14]

Explanation:

a physical property happens with the body or something alive while a chemical property has more action with chemicals like H2O and carbon dioxide

4 0
3 years ago
What common item can detect the presence of radiation? A. Bleach B. A roll of photographic film C. LED watch D. Baking soda
Alenkinab [10]

Answer: B- a roll of photographic film

Explanation:

Founders education answer

6 0
3 years ago
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