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Rufina [12.5K]
4 years ago
13

Explică rolul chimiei în protejarea mediului înconjurător?

Chemistry
1 answer:
Degger [83]4 years ago
6 0

Answer:

Chimia ne poate ajuta să înțelegem, monitorizăm, protejăm și îmbunătățim mediul din jurul nostru. Chimiștii dezvoltă instrumente și tehnici pentru a ne asigura că putem vedea și măsura poluarea aerului și a apei.

Explanation: I speak english i just know Romanian language

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30.5 g of sodium metal reacts with chlorine gas to produce sodium chloride. How much (in grams) chlorine gas must react with thi
Lena [83]

Answer:

Mass of chlorine = 47.22 g

Explanation:

Given data:

Mass of sodium = 30.5 g

Mass of chlorine= ?

Solution:

Chemical equation:

 2Na + Cl₂      →      2NaCl  

Number of moles of Na:

Number of moles = mass/molar mass

Number of moles = 30.5g/ 23 g/mol

Number of moles = 1.33 mol

Now we will compare the moles of Cl ₂ with Na from balance chemical equation.

                    Na            :              Cl ₂

                     2              :               1

                     1.33          :            1/2×1.33 = 0.665 mol

Mass of chlorine gas:

Mass = number of moles × molar mass

Mass = 0.665 mol × 71 g/mol

Mass = 47.22 g

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3 years ago
What energy do glow sticks convert to ?
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Is there any multiple choices?
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tia_tia [17]
<h3>Answer:</h3>
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To answer this question we need to ask ourselves;

What is a virtual image?

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What are the characteristics of a virtual image?

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3 years ago
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