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DerKrebs [107]
3 years ago
8

Can someone help me with this question?​

Chemistry
1 answer:
Rainbow [258]3 years ago
5 0

Answer:

I think the answer is h

Explanation:

when you let the balloon go, all the air the is inside comes out causing it to move forard

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Much of life on Earth is based in aquatic biomes. What property of water allows life to survive in liquid water?
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The low vapor pressure of water preventing bodies of water from dying out. 
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You have used 2.4×102 L of distilled water for a dialysis patient. How many gallons of water is that?
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Answer:

63.36gallons

Explanation:

Given:

Volume of water used for dialysis = 2.4 x 10²L

Solution:

We are to convert from liters to gallons.

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To convert to litre:

       since 1L = 0.264gallons

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3 years ago
Luke and Sian want to plant a vegetable garden in their yard. A soil testing kit measures the soil pH at 5.0, but the lettuce th
dexar [7]

Answer:

So, Luke and Sian has to increase the pH of the soil by adding base to it.

Explanation:

The pH is defined as the negative logarithm of the hydrogen ion concentration in their aqueous solution.

pH=-\log[H^+]

  • With increase in hydrogen ion concentration the pH value decreases.
  • With decrease in hydrogen ion concentration the pH value increases.

The pH of the soil after testing it on a kit comes out be 5.0, but they both need pH of the soil to 6.5.

Comparison of pH of soil:

  =  5.0 < 6.5

= High hydrogen ion concentration > High hydrogen ion concentration

So, Luke and Sian has to increase the pH of the soil by adding base .Doing so will decrease the hydrogen ion concentration in the soil (where as addition of acid lower the pH of soil).

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3 years ago
Does sugar dissolved in pure water conduct electricity
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When sugar is dissolved in water, the solution does not conduct electricity, because there are no ions in the solution. Some substances that are made of molecules form solutions that do conduct electricity. Ammonia is such a substance.

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3 years ago
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The process of change in a population over time is called what?
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Microevolution

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