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3 years ago

An organic compound has the molecular formula C8H16O4. What is the empirical formula of the compound?

Chemistry

1 answer:

Stella [2.4K]3 years ago

4 0

Answer:

C₂H₄O

Explanation:

Empirical formulas show the simplest ratio of atoms in a compound in whole numbers.

We can think that all the atoms are divisible by 4.

As we need the lowest number for each subscript, empirical formula is:

C₂H₄O

We have divided, 8/4 for carbon, 16/4 for H and 4/4 for O.

The empirical formula is also known as the simplest expression to represent a chemical

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Inessa [10]

Answer:

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Explanation:

bcoz it is solid at room temperature and does not have double bonds between carbons

8 0

3 years ago

Tris is a molecule that can be used to prepare buffers for biochemical experiments. It exists in two forms: Tris (a base) and Tr

ale4655 [162]

Solution :

For the reaction :

$\text{TrisH}^+ + H_2O \rightarrow \text{Trish}^- + H_3O^+$

we have

$Ka = \frac{[\text{Tris}^- \times H_3O]}{\text{Tris}^+}$

$=\frac{x^2}{0.02 -x}$

$=8.32 \times 10^{-9}$

Clearing $x$ , we have $x = 1.29 \times 10^{-5} \text{ moles of acid}$

So to reach $\text{pH} = 7.8 (\text{pOH}= 14-7.8=6.2)$ , one must have the $\text{OH}^-$ concentration of the :

$\text{[OH}^-]=10^{-pOH} = 6.31 \times 10^{-7} \text{ moles of base}$

So we can add enough of 1 M NaOH in order to neutralize the acid that is calculated above and also adding the calculated base.

$\text {n NaOH}=1.29 \times 10^{-5}+6.31 \times 10^{-7}$

$= 1.35 \times 10^{-5} \text{ moles}$

Volume NaOH $= 1.35 \times 10^{-5} \text{ moles} \times \frac{1000 \text{ mL}}{1 \text{ mol}} = 0.0135 \text{ mL}$

Tris mass $H^+ = 0.02 \text{ mol} \times 157.6 \text{ g/mol}=3.152 \text{ g}$

Now to prepare the said solution we must mix:

$3.152 \text{ g Tris H} + 0.0135 \text{ mL NaOH} \ 1 M$ gauge to 1000 mL with water.

3 0

3 years ago

How many electrons are in a ion that has 16 protons and 59 neutrons if it has negative 2 charge?

GalinKa [24]

Hi there I believe it’s 18 please let me know if I’m wrong :)

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2 years ago

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3 years ago

When lewis structures are drawn, do you only show valence electrons??

Lynna [10]

Yes you do cause its more explanation to
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3 years ago