Ask question

Ask question

All categories

3 years ago

11

Ethylene glycol (antifreeze) has a density of 1.11 g/cm3. what is the volume in liters of 3.46 kg of ethylene glycol?

1 answer:

Dovator [93]3 years ago

7 0

Density is a physical property which describes the mass of a substance per unit of volume of the substance. It is expressed as Density = m / V and it has units like g/cm^3. We use the density given to solve the problem.

3.46x10³ g / 1.11 g/cm³ = 3117.12 cm³ (1 L / 1000 cm³) =3.12 L

You might be interested in

Which statements regarding the Henderson-Hasselbalch equation are true? If the pH of the solution is known as is the pKa for the

Sonbull [250]

Answer:

1, 2, and 3 are true.

Explanation:

The Henderson-Hasselbalch equation is:

pH = pka + log₁₀ $\frac{[A^-]}{[HA]}$

If the pH of the solution is known as is the pKa for the acid, the ratio of conjugate base to acid can be determined. <em>TRUE</em>

pH = pka + log₁₀ $\frac{[A^-]}{[HA]}$

If you know pH and pka:

10^(pH-pka) = $\frac{[A^-]}{[HA]}$

The ratio will be: 10^(pH-pka)

At pH = pKa for an acid, [conjugate base] = [acid] in solution. <em>TRUE</em>

pH = pka + log₁₀ $\frac{[A^-]}{[HA]}$

0 = log₁₀ $\frac{[A^-]}{[HA]}$

10^0 = $\frac{[A^-]}{[HA]}$

1 = $\frac{[A^-]}{[HA]}$

As ratio is 1, [conjugate base] = [acid] in solution.

At pH >> pKa for an acid, the acid will be mostly ionized. <em>TRUE</em>

pH = pka + log₁₀ $\frac{[A^-]}{[HA]}$

If pH >> pKa, 10^(pH-pka) will be >> 1, that means that you have more [A⁻] than [HA]

At pH << pKa for an acid, the acid will be mostly ionized. <em>FALSE</em>

pH = pka + log₁₀ $\frac{[A^-]}{[HA]}$

If pH << pKa, 10^(pH-pka) will be << 1, that means that you have more [HA] than [A⁻]

I hope it helps!

6 0

3 years ago

Calculate the moles of argon gas at STP in 33 L. Round answer to 2 significant figures.

babymother [125]

Answer:

1.5 mol

Explanation:

Step 1: Given data

Volume of argon gas: 33 L

Standard temperature: 273.15 K

Standard pressure: 1 atm

Step 2: Calculate the moles corresponding to 33 L of argon at standard temperature and pressure (STP)

At STP, 1 mole of argon gas occupies 22.4 L.

33 L × 1 mol/22.4 L = 1.5 mol

4 0

3 years ago

PLEASE HELP 30 POINTS WILL GIVE BRAINLIEST

nikitadnepr [17]

Tachyon is not a particle.

7 0

3 years ago

Read 2 more answers

If a 1.85 g mass of zinc produces 475 mL of gas and your balloon weighs 0.590 g and the room temperature is 23.5°C. Calculate th

ser-zykov [4K]

I came up with a required balloon volume of 476 before adding the extra 1 mL.

3 0

3 years ago

Why are chemical changes considered “unseen”?

atroni [7]

<span>The correct answer here is that the reason chemical changes can be considered unseen, is because the alterations made within an element when it undergoes a chemical change occurs within the very atoms of the cell itself. In contrast with this, a physical change (such as a solid changing to a liquid through melting) does not change the element itself, but just it's physical form, so this can be seen easily to the human eye.</span>

6 0

3 years ago

Read 2 more answers