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Nana76
23 days ago
5

CAN SOMEONE PLEASEEEE DO THIS!!! ASAP ILL GUVE AS MANY POINTS AS I CAN Laboratory Techniques Lab Report

Chemistry
1 answer:
Tems11 [2.7K]23 days ago
7 0

Response:

What kind of assistance do you require?

Clarification:

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A student puts 0.020 mol of methyl methanoate into an empty and rigid 1.0 L vessel at 450 K. The pressure is measured to be 0.74
KiRa [2933]

Explanation:

Initial moles of ethanoic acid = 0.020 mol

At equilibrium, half of the ethanoic acid molecules have reacted.

Thus, moles of ethanoic acid reacted = 0.020 mol * (50% / 100%)

                                                                     = 0.010 mol

Moles of ethanoic acid remaining = 0.020 mol - 0.010 mol = 0.010 mol

The moles of product (CH3COOH)^{2} gas formed are determined as follows:

0.010 mol CH3COOH * (1 mol (CH3COOH)^{2} / 2 mol CH3COOH)

= 0.005 mol (CH3COOH)^{2}

Consequently, the total moles of gas present in the vessel at equilibrium are 0.010 mol CH3COOH and 0.005 mol (CH3COOH)^{2}

Total gas moles at equilibrium = 0.010 mol + 0.005 mol = 0.015 mol

Next, let’s determine the pressure:

0.020 mol of gas has a pressure of 0.74 atm; so under the same conditions, we find the pressure exerted by 0.015 mol of gas:

P1/n1 = P2/n2

P2 = P1*(n2 / n1)

      = 0.74 atm * (0.015 mol / 0.020 mol)

     = 0.555 atm

4 0
1 month ago
For each reaction, identify the element that gets reduced and the element that gets oxidized. 2AgCl+Zn⟶2Ag+ZnCl2 Identify the el
KiRa [2933]

Answer:

Explanation:

The oxidation state corresponds to the charge of each atomic ion. An increase indicates oxidation of the element while a decrease reflects reduction of the element.

2AgCl+Zn⟶2Ag+ZnCl2

Zinc undergoes oxidation, while Ag experiences reduction.

Ag⁺ changes to Ag (oxidation state decreases), thus Ag is reduced.

Zn alters to Zn⁺² (oxidation state increases), hence Zn is oxidized.

4NH₃+3O₂⟶2N₂+6H₂O

The oxidation state of nitrogen in ammonia is -3

whereas it is zero in elemental nitrogen.

An increase in the oxidation state indicates nitrogen is oxidized.

The oxidation state of oxygen is zero when in molecular oxygen and -2 when in water. Therefore, the oxidation state decreases, indicating oxidation is reduced.

Fe₂O₃+2Al⟶Al₂O₃+2Fe

The oxidation state of Fe in Fe₂O₃ is +3, switching to zero in Fe, so iron is reduced.

Aluminum's oxidation state is zero in Al, rising to +3 in Al₂O₃, indicating it is oxidized.

7 0
27 days ago
Which of the following statements are TRUE concerning this laboratory exercise - The systematic identification of an organic com
KiRa [2933]
True; True; False; True; True. Explanation: Organic compounds can exist in pure form, but they are typically found in mixtures, such as in petroleum, which implies that the compound one obtains could be impure. Organic compounds can exist in three states: solid, liquid, or gas. The state depends on the molecular forces and the molar mass involved. For instance, at room temperature, gasoline is a liquid, natural gas is a gas, and glucose is a solid. The fundamental characteristic of organic compounds is that they contain carbon (C) and hydrogen (H), while other elements like oxygen (O), nitrogen (N), halogens, and sulfur (S) may or may not be part of their structure. Because carbon can form chains, millions of organic compounds are known. Spectroscopic methods can provide information such as composition, molar mass, and diffraction patterns, which can assist in identifying certain chemical properties and may require additional identification tests.
5 0
25 days ago
PLEASE HELP!! What direction do you predict the addition of a base to the solution containing bromophenol blue will drive the eq
Alekssandra [3086]

Answer:

Here is an explanation related to the same question.

Explanation:

  • According to Le Chatelier's principle , when the balance of a system is disturbed by external changes, the system adapts by altering the concentrations of its components in a manner that counteracts the disturbance, thus achieving a new stable equilibrium of concentration that differs from its previous state.
  • Bromothymol blue is known to function as a phenolic compound that operates effectively as an acid in water solutions. Because it is classified as a weak acid, it should not react rapidly, while simultaneously establishing equilibrium with its largely unrelated form.

For such a weak diprotic acid, the typical economic expression can indeed be articulated as:

    ⇒  H_2In_(aq)\rightleftharpoons In^{2-} +2H^+

  • It can be ultimately shown through Le Chatelier's concept that when a strong acid is introduced, the complete disorientation of either component influences an increase in the proton levels within the medium.
  • Likewise, it takes up protons throughout the medium leading to the breakdown of water each time a solution is introduced. Consequently, the concentration of particles in the medium decreases. To adjust for this change, the equilibrium shifts appropriately, thereby prompting further dissociation of the respective acid into its dianion in the presence of protons, aiming to nullify the initial disturbance.
4 0
23 days ago
What is the correct name for the ionic compound Ca2P5
Tems11 [2777]

Response:

The name of the compound is calcium phosphide.

Clarification:

Calcium phosphide is a salt-like substance formed from calcium and phosphorus in a 2:5 ratio. It is characterized by its red-brown crystalline appearance.

This compound is utilized as a rodenticide for exterminating rats.

Additionally, it can be employed in fireworks.

7 0
27 days ago
Read 2 more answers
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