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xz_007 [3.2K]
3 years ago
7

When should you use a fume hood?

Chemistry
1 answer:
AfilCa [17]3 years ago
4 0

Answer:

if you are working with hazardous materials.

Explanation:

A properly operating and correctly used fume hood can reduce or eliminate exposure to volatile liquids, dusts, and mists. It is advisable to use a laboratory hood when working with all hazardous substances.

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n acid with a pKa of 8.0 is present in a solution with a pH of 6.0. What is the ratio of the protonated to the deprotonated form
Nady [450]

Answer : The ratio of the protonated to the deprotonated form of the acid is, 100

Explanation : Given,

pK_a=8.0

pH = 6.0

To calculate the ratio of the protonated to the deprotonated form of the acid we are using Henderson Hesselbach equation :

pH=pK_a+\log \frac{[Salt]}{[Acid]}

pH=pK_a+\log \frac{[Deprotonated]}{[Protonated]}

Now put all the given values in this expression, we get:

6.0=8.0+\log \frac{[Deprotonated]}{[Protonated]}

\frac{[Deprotonated]}{[Protonated]}=0.01  

As per question, the ratio of the protonated to the deprotonated form of the acid will be:

\frac{[Protonated]}{[Deprotonated]}=100  

Therefore, the ratio of the protonated to the deprotonated form of the acid is, 100

5 0
3 years ago
Can somebody plz just answer this 1 question thx!!!
coldgirl [10]

Answer:

cetacean i think thats the answer

3 0
3 years ago
G identify which substitution product is expected to be favored. explain. the product with retention of configuration is expecte
ddd [48]

The substitution product that is supposed to be favoured. The product with retention of configuration is expected to predominate slightly because the leaving group blocks the nucleophile.

<h3>What is a substitution product?</h3>

A substitution product is a product that is gotten from a reaction in which a group of reactants is replaced by another group in the reaction.

Therefore, the substitution product is supposed to be favoured. The product with retention of configuration is expected to predominate slightly because the leaving group blocks the nucleophile.

Learn more about substitution reaction below.

brainly.com/question/10143438

#SPJ1

4 0
2 years ago
Using the periodic table, complete the table to describe each atom. Type in your answers.
katovenus [111]

Answer:

A<em>=</em><em>4</em>

<em>B</em><em>=</em><em> </em><em>4</em><em>+</em><em>2</em><em> </em><em>=</em><em>6</em>

<em>C</em><em>=</em><em>C</em><em>arbon</em>

<em>D</em><em>=</em><em>10</em>

<em>E</em><em>=</em><em>22</em>

<em>F</em><em>=</em><em>Argon</em><em> </em>

5 0
3 years ago
I'LL GIVE BRAINLY AGAIN &lt;3
ser-zykov [4K]

Answer:

 

B) One way of solving this is to use dimensional analysis and cancel out grams to find volume.

A) density over mass is volume. Mass is 84.7 g and volume is 49.6 cm cubed

Explanation:

5 0
3 years ago
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