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marusya05 [52]
3 years ago
15

Is h3co3 a strong base

Chemistry
1 answer:
tamaranim1 [39]3 years ago
3 0
I read and said it's a weak base
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A chunk of ice breaks off a glacier and falls 30.0 m before it hits the water. Assuming it falls freely (there is no air resista
lina2011 [118]

Answer:

The ice chunk will take 2.47 seconds to hit the water.

Explanation:

Height from which ice chunk fell = h = 30.0 m

Initial velocity of the ice chunk = u = 0 m/s

Time taken by ice chunk to cover 30.0 m of height = t

Acceleration due to gravity = g 9.8m/s^2

Using second equation of motion ;

h=ut+\frac{1}{2}gt^2

30.0 m=0 m/s\times t+\frac{1}{2}\times 9.8 m/s^2\times t^2

t=\sqrt{\frac{30.0m/s\times 2}{9.8 m/s^2}}2.47 s

The ice chunk will take 2.47 seconds to hit the water.

7 0
3 years ago
Gerald's science teacher mixed room temperature samples of hydrochloric acid and sodium hydroxide in a large beaker. The solutio
shutvik [7]

Answer: Option (D) is the correct answer.

Explanation:

The chemical reaction equation will be as follows.

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

This means a new substance has been formed and a chemical change has taken place.

A chemical reaction in which heat energy is absorbed by the reactant molecules is known as an endothermic reaction.  

For example, A + B + Heat \rightarrow AB

On the other hand, a chemical reaction in which heat energy is released by the reactant molecules is known as an exothermic reaction.  

For example, C + D \rightarrow CD + Heat is an exothermic reaction.

Thus, we can conclude that in the given situation the beaker most likely felt warm because a chemical reaction was producing a new substance.

8 0
3 years ago
Vaporization is the reverse of
IRINA_888 [86]
 <span>Since Vaporization is when liquid turn to gas then the opposite of that would be Condensation because condensation is when gas turns to liquid <-- see complete opposites :D</span>
3 0
3 years ago
What’s a predator? Are predators animals?
Setler [38]

Answer:

its an animal that preys on others

Explanation:

5 0
3 years ago
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Eukaryotic plant and animal cells each have distinguishing characteristics. For example, plant cells have cell walls, while anim
kolezko [41]

Answer: well the answer is a

Explanation: how because I did that

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3 years ago
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