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o-na [289]
3 years ago
13

What is the answer for #6? And can u explain to me how u got it right?

Chemistry
1 answer:
Setler [38]3 years ago
5 0
The answer is D, pH greater than 7. This is because when you make a solution of potassium hydroxide, it leads to an excess of hydroxide ions in the water. Since the concentration of hydroxide ions is greater than that of protons, it causes the water to be basic. The basic range on the pH scale is always greater than 7. 
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Please help! Find the distance to each destination in AU. Use the correct conversion factor.
Zepler [3.9K]

Explanation:

The question involves converting from one unit (Kilometres) to another unit (Astronomical unit)

The relationship between both units is given as;

1 Km = 6.68459e-9 Au

Kulper belt

6.5 billion km = 6.5e9 Km

1 Km = 6.68459e-9 Au

6.5e9 Km = x

Solving for x;

x = 43.45 Au

Alpha Centauri

44 trillion km = 4.4e13

1 Km = 6.68459e-9 Au

4.4e13 km = x

Solving for x;

x = 294121.83 Au

4 0
3 years ago
How do water molecules dissolve a salt?
Artist 52 [7]

Answer:

Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions. The amount of a substance that can dissolve in a liquid (at a particular temperature) is called the solubility of the substance.

Explanation:

5 0
4 years ago
Lesson 3: Plant Growth Science 6 B Unit 1: Reproduction and Development of Organism
Nesterboy [21]
Can you please give more details

3 0
4 years ago
Read 2 more answers
You have separate solutions of HCl and H2SO4 with the same concentrations in terms of molarity. You wish to neutralize a solutio
sergejj [24]

Answer: Option (A) is the correct answer.

Explanation:

A neutralization reaction is defined as the reaction in which an acid reacts with a base to yield salt and water.

The given reaction will be as follows.

         HCl + NaOH \rightarrow NaCl + H_{2}O

       H_{2}SO_{4} + 2NaOH \rightarrow Na_{2}SO_{4} + 2H_{2}O

Now, if molarity of NaOH = M_{1} and volume of NaOH = V_{1}

Therefore, Molarity of HCl = molarity of H_{2}SO_{4} = M_{2}

     Volume of HCl required = \text{molarity of NaOH} \times \frac{\text{volume of NaOH}}{\text{molarity of HCl}}

                 = \frac{M_{1}V_{1}}{M_{2}}

So, vVolume of H_{2}SO_{4} required = 0.5 x molarity of NaOH x \frac{\text{volume of NaOH}}{\text{molarity of H_{2}SO_{4}}}[/tex]

                       = 0.5 \times \frac{M_{1}V_{1}}{M_{2}}

Hence, volume of HCl = 2 x volume of H_{2}SO_{4}.

Thus, we can conclude that HCl solution would be required more volume (in mL) to neutralize the base.

7 0
3 years ago
Identify any five changes from surroundings involves energy change in the form of heat or light.
Zinaida [17]

Answer:

i think turning on a flashlight or light bulb might be a good example

Explanation:

6 0
3 years ago
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