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vodomira [7]
3 years ago
9

Assuming equal concentrations, arrange these solutions by pH.

Chemistry
1 answer:
LenKa [72]3 years ago
8 0

Answer:

Highest pH(most basic)

Sr(OH)2(aq)

KOH (aq)  

NH3(aq)

HF (aq)  

HClO4(aq)

Lowest pH(most acidic)

Explanation:

The concentration of H+ ion will determine the pH of a solution. The pH actually reflects the ratio of H+ ion and OH- since both of them can combine into water. Solution with more H+ ion will have a lower pH and called acidic, while more OH- will have high pH and be called basic. Strong acid/base will be ionized more than weak acid/base.

Sr(OH)2(aq) = strong base, release 2 OH- ion per mole

KOH (aq) = Strong base, release 1 OH- per mole

NH3(aq) = weak base, release less than 1 OH- per mole

HF (aq) =strong acid, release 1 H+ per mole

HClO4(aq) = stronger acid, release 1 H+ per mole

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A food product contains 15 g of carbohydrates (CHO), 5 g of protein (PRO), and 4 g of fat. How many calories are in one serving
ANEK [815]

Answer:

116 Cal  

Explanation:

15 g CHO × 4 Cal/g =   60 Cal

5 g PRO  × 4 Cal/g =   20

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There are 116 Cal in one serving of the product.

6 0
3 years ago
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lara31 [8.8K]
The calories per gram of each substance are:

Protein: 4 calories / gram
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Fat: 9 calories / gram

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If she were to eat only these bars, she will need:

2,700 / 450
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3 years ago
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How are a flashlight and lightening similar and how are they different?
grandymaker [24]
<span>A flashlight is an electric-powered light source; the light source is a light bulb or an LED. The electrical energy is converted into visible light. Flashlights can be hand-held or mounted to a platform. Light from a lighting, on the other hand, is formed by exciting electrons to a higher state. </span>
5 0
4 years ago
An object has a mass of 441 g and a volume
Ratling [72]

Answer:

<h3>The answer is 4.41 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question we have

density =  \frac{441}{10}  \\

We have the final answer as

<h3>4.41 g/cm³</h3>

Hope this helps you

6 0
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natka813 [3]

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3 0
4 years ago
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