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Nuetrik [128]
3 years ago
13

All reversible reactions will reach chemical _____.

Chemistry
1 answer:
xeze [42]3 years ago
6 0
D.) <span>All reversible reactions will reach chemical "Equilibrium"

Hope this helps!</span>
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Joe is given a 118 g sample of an impure aqueous solution. The solution does not conduct electricity so he assumes the impurity
DochEvi [55]

Answer: 186 g/mol

Explanation:

Weight of solvent (water)=100 g = 0.1 kg      (1 kg=1000 g)

Molar mass of solute (impurity) = ?

Mass of solute (impurity) added = mass of solution - mass of solvent (water) = (118- 100) = 18 g

\Delta T_f=K_f\times \frac{\text{mass of solute}}{\text{molar mass of solute}\times \text{weight of solvent in kg}}

\Delta T_f = change in freezing point

K_f = freezing point constant for water = 1.86^0C/m

\Delta T_f=T_f^0-T_f=(0-(1.80))^0C=1.80^0C

1.80=1.86\times frac{18}{M\times 0.1}

M=186g/mol

The molecular mass of the impurity is 186 g/mol.

5 0
3 years ago
What is negative effects for citric acid?​
motikmotik

Negative effects of Citric acid includes numbness or tingly feeling, swelling or rapid weight gain, muscle twitching, cramps and other effects.

4 0
2 years ago
A chemical reaction in which an acid and a base react to produce salt and water is called a neutralization reaction. In the neut
Harrizon [31]

Answer:

D, potassium hydroxide

Explanation:

Nitric acid us given and is obviously an acid

8 0
3 years ago
Sodium azide, NaN3, the explosive compound found in automobile air bags, decomposes according to the following equation: 2NaN3(s
shutvik [7]

Answer:

1.9 × 10² g NaN₃

1.5 g/L

Explanation:

Step 1: Write the balanced decomposition equation

2 NaN₃(s) ⇒ 2 Na(s) + 3 N₂(g)

Step 2: Calculate the moles of N₂ formed

N₂ occupies a 80.0 L bag at 1.3 atm and 27 °C (300 K). We will calculate the moles of N₂ using the ideal gas equation.

P × V = n × R × T

n = P × V / R × T

n = 1.3 atm × 80.0 L / (0.0821 atm.L/mol.K) × 300 K = 4.2 mol

We can also calculate the mass of nitrogen using the molar mass (M) 28.01 g/mol.

4.2 mol × 28.01 g/mol = 1.2 × 10² g

Step 3: Calculate the mass of NaN₃ needed to form 1.2 × 10² g of N₂

The mass ratio of NaN₃ to N₂ is 130.02:84.03.

1.2 × 10² g N₂ × 130.02 g NaN₃/84.03 g N₂ = 1.9 × 10² g NaN₃

Step 4: Calculate the density of N₂

We will use the following expression.

ρ = P × M / R × T

ρ = 1.3 atm × 28.01 g/mol / (0.0821 atm.L/mol.K) × 300 K = 1.5 g/L

5 0
3 years ago
I bake some flour until it turns into leavened bread. Is this a physical or chemical change? Why do you think this?
KatRina [158]
That’s not how it goes.
6 0
3 years ago
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