Please help!!
which oneeeee

Answers

Answer 1

Answer: b is the correct answer

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Which is the electron configuration for lithium? A. 1s2 B. 2s3 C. 1s22s1 D. 1s12s2
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A sample of gas occupies a volume of 67.5 mL . As it expands, it does 131.0 J of work on its surroundings at a constant pressure of 783 Torr . What is the final volume of the gas g

Answers

Answer:

The final volume $V2=1.3175L$

Explanation:

between work ( w), pressure ( P ) and volume ( V ) is the following:

w=−PΔV

where,

ΔV=V2−V1

It was stated that the gas is expanding, then the work is done by the system and it is of a negative value .

Note that work, should be expressed in 1L⋅atm=101.3J

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The components of poison ivy and poison oak that produce the characteristic itchy rash are catechols substituted with long-chain alkyl groups. If you were exposed to poison ivy, which of the treatments below would you apply to the affected area?

Answers

Answer:

Explanation:

Although there are no actual solutions to the effects caused by poison ivy, there are still various different treatments that can help alleviate the symptoms. Sodium bicarbonate is a base that will increase pH. An increase in pH will cause the catechol to ionize. A charged substance will be more soluble in water. Soap helps with the solubility of the long alkyl chain. Another very helpful treatment would be to rub alcohol on the affected area, this can remove the urushiol oil from the skin, helping to minimize discomfort

What are the names of the following compounds: FeCl HNO NaSO SO

Answers

Answer:

FeCl: Ferric Chloride (also called iron chloride), comes from Fe (ferrum, or iron), and Cl (Chlorine)

HNO: Nitroxyl, from N (Nitrogen), and the acidic nature of a radical ending in -yl.

NaSO: Sodium sulfate, Na (Sodium), S (Sulfur), O (Oxygen).

SO: Sulfur monoxide (Mono-One), O (Oxygen) and S (Sulfur).

Choose the correct statement(s) for the following reaction: 8Fe(s) + S8 (s) → 8 FeS (s) (a) Iron is being oxidized. (b) Iron is being reduced. (c) Sulfur is being oxidized. (d) Sulfur is being reduced

Answers

Answer:

(a) Iron is being oxidized.

(d) Sulfur is being reduced.

Explanation:

Let's consider the following redox reaction.

8 Fe(s) + S₈(s) → 8 FeS(s)

Iron is being oxidized according to the following oxidation half-reaction:

Fe(s) → Fe²⁺(s) + 2 e⁻

Sulfur is being reduced according to the following reduction half-reaction:

S₈(s) + 16 e⁻ → 8 S²⁻(s)

The tides of the oceans and large lakes that occur on Earth are caused by_______The gravitational pull from the moon and sun

The earth’s rotation

Answers

Answer:

The gravitational pull from the moon and sun

Explanation:

Answer: gravity

Explanation:

Gravity is one major force that creates tides. In 1687, Sir Isaac Newton explained that ocean tides result from the gravitational attraction of the sun and moon on the oceans of the earth (Sumich, J.L., 1996).

What type of energy conversion takes place in a voltaic cell? A) Chemical energy is spontaneously converted to electrical energy.

B) Chemical energy is converted to electrical energy only when there is an external power source.

C) Electrical energy is spontaneously converted to chemical energy.

D)Electrical energy is converted to chemical energy only when there is an external power source.