A chemist has dissolved a certain substance in water the chemist knows that more of the substance could be dissolved into the water before it stops dissolving there for the current solution is a.) unsaturated b.) saturated c.) supersaturated

Answers

Answer 1

Answer: b.) Unsaturated... Because it can take on more.

If it can't take on more, it's saturated. If it takes more than it can hold, it's supersaturated.

Answer 2

Answer:

Answer:

unsaturated :)

Explanation:

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Can Sodium be used to distinguish between cyclobutanol and butanoic acid

Answers

Answer:

$\boxed{\text{No}}$

Explanation:

Na reacts with all OH groups to produce hydrogen.

The reaction with cyclobutanol is shown below.

The reaction with butanoic acid is

$\rm CH_(3)CH_(2)CH_(2)COOH\xrightarrow{\text{Na}} CH_(3)CH_(2)CH_(2)COO^(-) + H_(2)$

Both compounds release bubbles of hydrogen, so you can't use sodium to distinguish between them.

Calculate the molarity of a solution containing 5.6 mol of sodium hydroxide dissolved in 2.1 L of water

Answers

2.0 MOL is the correct answer I believe

Assume that 13.5 g solid aluminum (Al) react with HCl to produce solid aluminum chloride (AlCl3) salt and gaseous hydrogen (H2) at standard temperature and pressure.How many moles of Al react?

How many moles of H2 are produced?

How many liters of H2 are produced?

Answers

0.5 moles $\bold {Al}$ is required for the given reaction to occur. Mole is a constant that represents a certain amount of particles such as atoms, ions, or molecules.

What is the Mole concept?

It is the number or constant that represents a certain amount of particles such as atoms, ions, or molecules.

1 mole = $6.02 * 10^2^3$ particles.

$n = \frac wm$

Where,

$n$ - number of moles

$w$ - given mass = 13.5 g.

$m$ - molar mass = 26.98 g/mol.

Put the values in the formula,

$n = \frac {13.5} {26.98}\n\nn = 0.5\rm \ mol.$

Therefore, 0.5 moles $\bold {Al}$ is required for the given reaction to occur.

Learn more about Mole concept:

brainly.com/question/7287712

Answer:

1) 0.5 mol.

2) 0.75 mol.

3) 16.8 L.

Explanation:

1) How many moles of Al react?

We can calculate the number of moles of Al (n) using the relation:

n = mass / molar mass,

Mass of Al = 13.5 g.

Molar mass mass of Al = 26.98 g/mol.

∴ The number of moles of Al (n) = mass / molar mass = (13.5 g) / (26.98 g/mol) = 0.5 mol.

2) How many moles of H₂ are produced?

It is a stichiometry problem.

We should write the balanced equation of the reaction:

2Al + 6HCl → 2AlCl₃ + 3H₂.

It is clear that 2.0 moles of Al reacts with 6.0 moles of HCl to produce 2.0 moles of AlCl₃ and 3.0 moles of H₂.

Using the cross multiplication:

2.0 moles of Al → 3.0 moles of H₂, from the stichiometry,

0.5 mole of Al → ??? moles of H₂.

∴ The number of moles of H₂ are produced = (0.5 mole)(3.0 mole) / (2.0 mole) = 0.75 mol.

3) How many liters of H₂ are produced?

It is known that at STP, 1.0 mole of any gas occupies a volume of 22.4 L.

Using cross multiplication:

1.0 mole occupies → 22.4 L.

0.75 mole occupies → ??? L.

∴The number of liters of H₂ are produced = (0.75 mole)(22.4 L) / (1.0 mole) = 16.8 L.

Which of the following is not an example of a mineral crystal shape? A. Calcite
B. Kryptonite
C. Quartz
D. Pyrite

Answers

B. Kryptonite. The reason for this is that it is a nonexistent compound, or if it exists it is manmade and only able to survive for a few second. The suffix -tie indicates that is a bonded with oxygen, which, since Krypton is a noble gas, is impossible. also, crystals are formed from ionic bonds, and since both krypton and oxygen are non-metals, a bond between them would be covalent.

Which nuclear decay emission has the weakest penetrating power?1. alpha particle
2. bera particle
3.gamma radiation
4. positron

Answers

Alpha particle is the nuclear decay emission that has the weakest penetrating power. The correct option among all the options that are given in the question is the first option or option "1". Gamma is a type of radiation and so can be negated as a particle. Alpha particles have the largest radiation and so the weakest penetrating power.

El hielo es una mezcla, elemento o compuesto?

Answers

No, el hielo no es ni elemento o mezla. El hielo es un compuesto, hecho de los elementos H y O

el hielo es in elemento

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