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Stella [2.4K]
3 years ago
12

Please select the word from the list that best fits the definition

Chemistry
1 answer:
den301095 [7]3 years ago
8 0

Answer:

carboxylic acid

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A compound has a molecular weight of 146 g/mol. A 0.3250 g sample of the compound contains 0.1605 g of carbon, 0.0220 g of hydro
Sonbull [250]

Answer: The molecular formula is C_6H_{10}S_2

Explanation:

We are given:

Mass of C = 0.1605 g

Mass of H= 0.0220 g

mass of S = 0.1425 g

Step 1 : convert given masses into moles.

Moles of C =\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{0.1605g}{12g/mole}=0.0134moles

Moles of H =\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{0.0220g}{1g/mole}=0.0220moles

Moles of S =\frac{\text{ given mass of S}}{\text{ molar mass of S}}= \frac{0.1425g}{32g/mole}=0.0044moles

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = \frac{0.0134}{0.0044}=3

For H = \frac{0.0220}{0.0044}=5

For S =\frac{0.0044}{0.0044}=1

The ratio of C : H: S=  3: 5: 1

Hence the empirical formula is C_3H_5S

The empirical weight of C_3H_5S = 3(12)+5(1)+1(32)= 73g.

The molecular weight = 146 g/mole

Now we have to calculate the molecular formula.

n=\frac{\text{Molecular weight }}{\text{Equivalent weight}}=\frac{146}{73}=2

The molecular formula will be=2\times C_3H_5S=C_6H_{10}S_2

7 0
3 years ago
Why does temperature increase with altitude through the stratosphere?
KIM [24]

Answer:

The air molecules are closer together in the upper stratosphere.

Explanation:

8 0
4 years ago
Which of the following is a nonmetal?<br> A. Cd<br> B. Te<br> C. Mg<br> D. Ne
Masja [62]
The answer is D. Ne, which stands for Neon.
4 0
4 years ago
Un estudiante de noveno año decide realizar varias mezclas de compuestos quimicos y tiene un frasco rotulado con la formula quim
expeople1 [14]

Answer:

- Oxido de magnesio

Explanation:

Mg → magnesio

O → oxígeno

La unión del oxígeno (no metal) con un metal, forma el determinado óxido que se nombra como óxido de .... y el no metal.

En este caso, podemos deducir que el contenido del frasco es de óxido de magnesio, aunque viendo que hay un sólo átomo de oxígeno podemos llamarlo como monóxido de magnesio, similar al CO (monóxido de carbono).

A partir de que el magnesio sólido entre en contacto con el aire, se produce MgO de acuerdo a la siguiente reacción:

2Mg  +  O₂ →  2MgO

7 0
3 years ago
Help please I'll mark you as a brainliest promise.​
antiseptic1488 [7]

Answer:

Law of the Sea Treaty

LOST Local Option Sales Tax (special purpose tax)

LOST Linux One Stanza Tips

LOST Liberty Owners Special Team

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Explanation:is this what you meant?

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3 years ago
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