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3 years ago

Ethylene, a gas found in nature, is commonly used to ripen bananas and other fruits. Which compound is ethylene?

Chemistry

1 answer:

Reika [66]3 years ago

6 0

Answer:

C2H4

Explanation:

cause the compound of ethylene is C2H4

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0.2344 mol CH3OH/0.0500=

BigorU [14]

Answer:

150.016 grams

Explanation:

molar mass of cH3OH=12+4+16 =32 u

mass = nu. of moles × molar mass

mass= 0.2344 × 32 =7.5008 gm÷ 0.0500 = 150.016 gm

8 0

4 years ago

I WILL GIVE BRAINLIEST!!!!

prisoha [69]

The answer is A) Actinides

4 0

3 years ago

When the number of electrons in an atom changes, then the atom's_______ change.

AlekseyPX

Answer:

It would change the charge of the atom.

Explanation:

Added electrons cause atoms to be negatively charged, lost electrons cause atoms to be positively charged.

5 0

3 years ago

Which of the following is the best description of the results of a chemical reaction?

dedylja [7]

Answer:

A, new substance is formed with different properties

Explanation:

5 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