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S_A_V [24]
3 years ago
8

In

Chemistry
1 answer:
Lelechka [254]3 years ago
4 0

Answer:

V =  33.62 L

Explanation:

Given data:

Volume = ?

Number of moles of oxygen = 1.5 mol

Temperature = 273 K

Pressure = 1 atm

Solution:

Standard pressure = 1 atm

Standard temperature = 273 K

PV = nRT

V = nRT/ P

V = 1.5 mol × 0.0821 atm. L. K⁻¹. mol⁻¹ ×  273 k / 1 atm

V = 33.62 L. atm// 1 atm

V =  33.62 L

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On hot days, you may have noticed potato chip bags seem to inflate, even though they have not been opened. If I have a 250 mL ba
MrRa [10]

The first law here is Charles's law and the new volume will be 285.08 mL

Converting degree celsius to kelvin when solving gas laws problem.

kelvin = degree celsius + 273.15

Kelvin = 19 + 273.15 = 292.15 K

Kelvin = 60 + 273.15 = 333.15 K

Given Data:

V1 (initital volume) = 250 ml

T1 (initial temperature) = 19°c or 292.15 K

V2 (final volume) = unknwon ?

T2 (final temperature) = 60°c  or 333.15 K

Charles' law which states that volume is directly proportional to temperature when the amount and pressure of the gas are constant.

Applying the formula, we get

V2 = V1T2 / T1

   = 250 ml × 333.15 K / 292.15 K    (cancel kelvin unit)

    = 83287.5 ml / 292.15

    = 285.08 ml

The new volume will be 285.08 ml

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6 0
1 year ago
Saponification is a chemical reaction _____. A. due to the presence of a strong organic acid. B. that results in an alcohol and
dezoksy [38]

Answer:

that results in an alcohol and a carboxylic acid.

Explanation:

Saponification is a chemical reaction process of alkaline hydrolysis of esters(R'COOR group) by which soap is obtained.

For Example, when a base such as sodium hydroxide [NaOH]  is used to hydrolyze an ester, the products are a carboxylate salt and an alcohol. Because soaps are prepared by the alkaline hydrolysis of fats and oils.

In a saponification reaction, alkaline hydrolysis of fats and oils with sodium hydroxide  yields propane-1,2,3-triol and the corresponding sodium salts of the component fatty acids.

i.e  Fat or oil + caustic alkali ⇒ Soap + propane-1,2,3-triol

As a specific example, ethyl acetate and NaOH react to form sodium acetate and ethanol:

The reaction goes to completion in the image below:

8 0
3 years ago
what is an empirical formulaWhat is the percent composition by mass of nitrogen in (NH4)2CO3 (gram-formula mass = 96.0 g/mol)?
Margarita [4]

Answer:

Percentage composition = 14.583%

Explanation:

In chemistry, the emprical formular of a compound is the simplest formular a compound can have. It shows the simplest ratio in which the elements are combined in the compound.

Percentage composition by mass of Nitrogen

Nitrogen = 14g/mol

In one mole of the compound;

Mass of Nitrogen = 1 mol * 14g/mol = 14g

Mass of compound = 1 mol * 96.0 g/mol = 96

Percentage composition of Nitrogen = (Mass of Nitrogen /  Mass of compound) * 100

percentage composition = 14/96   * 100

Percentage composition = 0.14583 * 100

Percentage composition = 14.583%

3 0
3 years ago
Potassium and sodium chloride are similar in charge and they both have the same anion.  When comparing sodium chloride (36 g / 1
lesya [120]
Sodium Chloride has a higher solubility. 
7 0
4 years ago
What is the force that accelerates objects towards Earth?
geniusboy [140]
The force that accelerates objects towards Earth is gravity.
6 0
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