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Feliz [49]
3 years ago
12

Positive and Negative ions attract each-other and form chemical __________

Chemistry
1 answer:
e-lub [12.9K]3 years ago
7 0

Answer:

Changes

Explanation:

When positive and negative ions attract each other it fors a negative chemical changes

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Which object has stored gravitational potential energy
kakasveta [241]

Answer:a lightbulb burning

Explanation:

Apex

5 0
3 years ago
Read 2 more answers
Calculations
Black_prince [1.1K]

Answer:

Theoretical yield: 2.75g of paranitroaniline

Percentage yield: 54.5%

Explanation:

In strong-acid medium, acetanilide (Molar mass: 135.16g/mol) reacts producing para-nitroaniline (138.12g/mol) in a 1/1 reaction.

Theoretical yield of para-nitroaniline is the mass produced assuming a yield of 100%. That is:

2.7g acetanilide × (1mol / 135.16g) = 0.020 moles of acetanilide.

Assuming a yield of 100% are 0.020 moles of paranitroaniline. Theoretical yield is:

0.020 moles × (138.12g / mol) =

<h3>Theoretical yield: 2.75g of paranitroaniline</h3><h3 />

Percentage yield is:

(Actual yield / theoretical yield) × 100

Actual yield was 1.5g and percentage yield will be:

Percentage yield: (1.5g / 2.75g) × 100

<h3>Percentage yield: 54.5%</h3>

8 0
3 years ago
Read 2 more answers
Sodium azide decomposes rapidly to produce nitrogen gas.
brilliants [131]

Answer:

156 g

Explanation:

Let's consider the following reaction.

2 NaN₃(s) → 2 Na(s) + 3 N₂ (g)

We can find the moles of N₂  using the ideal gas equation.

P × V = n × R × T

1.50 atm × 60.0 L = n × (0.08206 atm.L/mol.K) × 305 K

n = 3.60 mol

The molar ratio of N₂ to NaN₃ is 3:2. The moles of NaN₃ are:

3.60 mol N₂ × (2 mol NaN₃ / 3 mol N₂) = 2.40 mol NaN₃

The molar mass of NaN₃ is 65.01 g/mol. The mass of NaN₃ is:

2.40 mol × 65.01 g/mol = 156 g

4 0
3 years ago
Is chemical a example of natural forces
Nastasia [14]
The only types of natural forces are gravitation, electromagnetism, the weak interaction, and the strong interaction. So no, chemical is not an example of a natural force.
I hope this helps.
7 0
3 years ago
Read 2 more answers
A gas mixture contains ar and h2. what is the total pressure of the mixture, if the mole fraction of h2 is 0. 350 atm and the pr
nasty-shy [4]

Considering the Dalton's partial pressure, the total pressure in the mixture of gases is 1.371 atm.

The pressure exerted by a particular gas in a mixture is known as its partial pressure.

So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:

P_{T} = P_{1}+P_{2}+......+P_{n}

where n is the amount of gases in the mixture.

Dalton's partial pressure law can also be expressed in terms of the mole fraction of the gas in the mixture.  So in a mixture of two or more gases, the partial pressure of gas A can be expressed as:

P_{A} = X_{a}P_{T}

In this case, the partial pressure of gas H₂ can be expressed as:

P_{H2} = X_{H2} P_{T}

You know:

P_{H2} = 0.48 atm

X_{H2} = 0.35

Replacing in the definition of partial pressure of gas H₂:

0.48atm = 0.35P_{T}

Solving:

P_{T} = \frac{0.48atm}{0.35}

P_{T}= 1.371 atm

In summary, the total pressure in the mixture of gases is 1.371 atm.

Learn more about partial pressure: brainly.com/question/15302032

#SPJ4

5 0
1 year ago
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