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elixir [45]
2 years ago
6

A wetland being drained so a housing development can be built is an example of ____________.

Chemistry
1 answer:
Reil [10]2 years ago
5 0

Answer:

a now give me the points

Explanation:

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4. This is the idea that energy can be transformed from one form to another, but it
nordsb [41]

Answer:

Law of Conservation of Energy

Explanation:

6 0
3 years ago
Explain how the elimination of a predator from an ecosystem might result in starvation amongst its prey species.
hammer [34]

If there weren't any predators, the population of prey would increase and they would starve due to too many mouths to feed.

6 0
2 years ago
How many molecules are there in 21.6 grams of CH4?
crimeas [40]
See attachement for the answer to your question.

7 0
3 years ago
what volume of a 0.155 M calcium hydroxide solution is required to neutralize 28.8 mL of a 0.106 M nitric acid?​
Hitman42 [59]

Answer:

9.85mL

Explanation:

First, let us write a balanced equation for the reaction. This is illustrated below:

Ca(OH)2 + 2HNO3 —> Ca(NO3)2 + 2H2O

From the balanced equation above,

nA (mole of the acid) = 2

nB (mole of the base) = 1

Data obtained from the question include:

Vb (volume of the base) =?

Mb (Molarity of base) = 0.155 M

Va (volume of the acid) = 28.8 mL

Ma (Molarity of acid) = 0.106 M

Using MaVa/MbVb = nA/nB, the volume of calcium hydroxide (i.e the base) can be obtain as follow:

MaVa/MbVb = nA/nB

0.106 x 28.8 / 0.155 x Vb = 2/1

Cross multiply to express in linear form as shown below:

2 x 0.155 x Vb = 0.106 x 28.8

Divide both side by 2 x 0.155

Vb = (0.106 x 28.8) / (2 x 0.155)

Vb = 9.85mL

Therefore, the Volume of calcium hydroxide is 9.85mL

7 0
2 years ago
Cocaine selectively blocks na+ (sodium) channels, which is the mechanism that leads to
anzhelika [568]
Cocaine selectively blocks sodium channels which is the mechanism that leads to local anesthetic effects. 
Voltage gated sodium channels play very important roles in the body as they are responsible for action initiation and propagation in excitable cells, such as nerves, muscles and neuroendocrine cells. Like other sodium ion channels blockers such as lidocaine, Cocaine selectively blocks sodium ion channels which denies entry of sodium ions in the cell, thus leading to local anesthetic effects. 
5 0
3 years ago
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