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Kay [80]
3 years ago
15

Help please

Chemistry
2 answers:
ss7ja [257]3 years ago
7 0
0.0821 L-atm/mol-K
8.314 kPa-L/mol-K
Delvig [45]3 years ago
7 0

Answer : The correct options are, (2) 8.314 kPa-L/mol-K and (4) 0.0821 L-atm/mol-K

Explanation :

As we know that the 'R' is the gas constant in the ideal gas law.

There are different values of gas constant 'R'. The values are,

8.314JK^{-1}mole^{-1}\\\\0.0821L\text{ atm }K^{-1}mole^{-1}\\\\0.08314L\text{ bar }K^{-1}mole^{-1}\\\\8.314K\text{ Pa }LK^{-1}mole^{-1}\\\\2calK^{-1}mole^{-1}

Hence, the correct options are, (2) 8.314K\text{ Pa }LK^{-1}mole^{-1} and (4) 0.0821L\text{ atm }K^{-1}mole^{-1}


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Convert the following with the correct number of significant figures:
larisa [96]

Answer:

1.78 × 10⁹ μg

Explanation:

We have to convert 1.78 kg to μg.

Step 1: Convert 1.78 kilograms to grams

We will use the conversion factor 1 kg = 10³ g.

1.78 kg × 10³ g/1 kg = 1.78 × 10³ g

Step 2: Convert 1.78 × 10³ grams to micrograms

We will use the conversion factor 1 g = 10⁶ μg.

1.78 × 10³ g × 10⁶ μg/1 g = 1.78 × 10⁹ μg

8 0
2 years ago
1. Sodium hydroxide reacts with carbon dioxide according to the equation: 2NaOH(s) + CO2(g) →
Leno4ka [110]

The limiting reagent when 5 g of NaOH and 4.4 g CO₂  allowed to react will be NaOH

<h3>What is Limiting reagent ?</h3>

The limiting reactant (or limiting reagent) is the reactant that gets consumed first in a chemical reaction and therefore limits how much product can be formed.

Given chemical equation in balanced form ;

2NaOH(s) + CO₂(g) → Na₂CO₃(s) + H₂O(l).

According to the Chemical equation ;

  • The limiting reagent when 5 g of NaOH and 4.4 g CO₂  allowed to react will be NaOH

    If 44 g CO₂ requires 80 g of NaOH, therefore, 4.4 g CO₂ will require atleast 8 g of NaOH.

    But the available quantity is 5 g NaOH. thus, NaOH is the Limiting reagent.

  • 6.625 g of Na₂CO₃ are expected to be produced 5.0 g of NaOH and 4.4 g of CO₂ are allowed to react

    As 80 g NaOH produces 106 g of Na₂CO₃.

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Learn more about limiting reagent here ;

brainly.com/question/11848702

#SPJ1

5 0
2 years ago
Cl2 and N2 react according to the following equation 3Cl2(g) + N2(g) rightarrow 2NCl3(g) If 4 L of a stoichiometric mixture of c
melamori03 [73]

Answer:

Volume of NCl3 is 3L

Explanation:

Avogadro states: All gases at the same volume under temperature and pressure constant have the same number of moles.

The chemical equation is:

3Cl2(g) + N2(g) → 2NCl3(g)

Where 3 moles of chlorine reacts with 1 mole of nitrogen to produce 2 moles of NCl3.

But using Avogadros law we can say:

3L of chlorine and 1L of nitrogen produce 2L of Nitrogen trichloride.

3L of chlorine and 1L of nitrogen: 4L (The stoichiometric mixture)

That means, volume of NCl3 produced is 3L

8 0
2 years ago
Why is burning of plastics not considered a good method for their disposal?
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Plastics release chemicals and fumes when burned which can harm the enviroment around them. A good method for their disposal would be recycling them so they can later be used as something else.
6 0
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An oxide ion, O2–, has:
sergij07 [2.7K]

Answer:

the answer A- 8 protons and 10 electrons

6 0
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