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VashaNatasha [74]
3 years ago
14

........,,,,,,?!!mm........

Chemistry
1 answer:
sladkih [1.3K]3 years ago
5 0

Answer:

añadir agua a la mezcla para disolver la sal. Después la arena se separa del agua salada por filtración. Finalmente, el agua salada se deja evaporar.

Explanation:

:u

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Name this compound:<br> -Using E/Z designation<br> -Using Cis/Trans designation
vekshin1

Answer:

A:  (Z)-3-chloro-4-ethyl-2,5-dimethyl-3-hexene

B: (<em>cis</em>)-3-chloro-4-ethyl-2,5-dimethyl-3-hexene

Explanation:

                   The two two heavier groups around the double bond are chlorine and isopropyl.

                    Both of these heavier groups are on the same side therefore, they are designated as cis or Z conformer.

3 0
3 years ago
Two scientists wrote a paper detailing their research and conclusions and submitted it to a scientific journal. Several months l
Semmy [17]
<span>Two scientists wrote a paper detailing their research and conclusions and submitted it to a scientific journal. Several months later, they received the paper back from the publisher with many comments attached from several fellow scientists. It is either that they revise their study or replicate the study. Most scientists would revisit their work and the findings they had from their research. Most probable if they were successful and the comments of the publisher and the co-scientists were positive they could replicate the study to validate its accountability.<span>
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6 0
3 years ago
9)
meriva

Answer:

A Sound Energy I think

Explanation:

5 0
3 years ago
What do destructive forces do
mrs_skeptik [129]

Answer:

they destroy or break stuff i think lol hope this helps

Explanation:

6 0
3 years ago
Read 2 more answers
The combustion of propane may be described by the chemical equation C 3 H 8 ( g ) + 5 O 2 ( g ) ⟶ 3 CO 2 ( g ) + 4 H 2 O ( g ) H
Digiron [165]

Answer: The mass of O_2 needed is, 13.59 grams.

Explanation : Given,

Mass of C_3H_8 = 89.2 g

Molar mass of C_3H_8 = 42 g/mol

Molar mass of O_2 = 32 g/mol

First we have to calculate the moles of C_3H_8

\text{Moles of }C_3H_8=\frac{\text{Given mass }C_3H_8}{\text{Molar mass }C_3H_8}

\text{Moles of }C_3H_8=\frac{89.2g}{42g/mol}=2.124mol

Now we have to calculate the moles of C_3H_8

The balanced chemical equation is:

C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)

From the reaction, we conclude that

As, 1 mole of C_3H_8 react with 5 mole of O_2

So, 2.124 mole of C_3H_8 react with \frac{2.124}{5}=0.4248 mole of O_2

Now we have to calculate the mass of O_2

\text{ Mass of }O_2=\text{ Moles of }O_2\times \text{ Molar mass of }O_2

\text{ Mass of }O_2=(0.4248moles)\times (32g/mole)=13.59g

Therefore, the mass of O_2 needed is, 13.59 grams.

4 0
4 years ago
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