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Nady [450]
3 years ago
13

Mr. Jones, the science teacher, tells his students that energy cannot be created; it must be captured from the environment. He i

s talking about the _____.
Chemistry
1 answer:
taurus [48]3 years ago
6 0

The law of conservation of energy or first law of thermodynamics

Explanation:

From the context we can infer that Mr. Jones was describing the law of conservation of energy.

According to the law of conservation of energy:

  "energy is not created nor destroyed by can be transformed from one form to another" .

  The captured energy is a form of energy and it is change into other forms in the ecosystem.

Energy is initially captured in the ecosystem by plants.

learn more:

Laws of thermodynamics brainly.com/question/3564634

#learnwithBrainly

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Mike mixes two chemicals in a container. The container quickly becomes
Vedmedyk [2.9K]

Answer:

it is an exothermic reaction

7 0
3 years ago
A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solutio
Zigmanuir [339]

<u>Answer:</u> The concentration of original sulfuric acid solution is 1.62 M

<u>Explanation:</u>

Let the original concentration of sulfuric acid be 'x' M

To calculate the molarity of the diluted solution, we use the equation:

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the molarity and volume of the concentrated sulfuric acid solution

M_2\text{ and }V_2 are the molarity and volume of diluted sulfuric acid solution

We are given:

M_1=xM\\V_1=25.00mL\\M_2=?M\\V_2=250.0mL

Putting values in above equation, we get:

x\times 25.00=M_2\times 250.0\\\\M_2=\frac{x\times 25.0}{250}=\frac{x}{10}

Now, to calculate the concentration of acid, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is H_2SO_4

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is NaOH.

We are given:

n_1=2\\M_1=\frac{x}{10}M\\V_1=10.00mL\\n_2=1\\M_2=0.1790M\\V_2=18.07mL

Putting values in above equation, we get:

2\times \frac{x}{10}\times 10.00=1\times 0.1790\times 18.07\\\\x=\frac{1\times 0.1790\times 18.07\times 10}{2\times 10.00}=1.62M

Hence, the concentration of original sulfuric acid solution is 1.62 M

5 0
3 years ago
Sodium metal and Oxygen gas combine to form Sodium Oxide.
Bingel [31]

There are four sodium atoms in the product.

A reaction equation is said to be balanced when the number of atoms of reactants are equal to the number of atoms of products according to the balanced reaction equation.

Given the reaction between sodium metal and oxygen, the reaction could be written as; 2Na(s) + O2(g) ----> 2Na2O(s). We can see that there are four sodium atoms in the product.

Learn more about balancing reaction equations: brainly.com/question/2510547

5 0
2 years ago
Read 2 more answers
Is iced coffee a solution?
kodGreya [7K]
No why are you asking this question?
5 0
3 years ago
Compare gases with liquids and solids according to the kinetic molecular theory
ella [17]
<span>Solids have molecules that are held tightly together in close bonds. (positive bonded to a negative) They can bend or vibrate but still stay bonded together closely. Solids have very little kinetic energy. </span>

<span>Liquids have molecules that are held in looser bonds. They move more freely and more randomly that in a solid. It is common for the bonds to be flexible enough to slide over each other. </span>

<span>Gasses have the loosest bond of any state of matter. The loose bonds allow the molecules to move freely and far apart. A gas has the greatest kinetic energy of any state of matter,</span>
8 0
3 years ago
Read 2 more answers
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