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Harrizon [31]
3 years ago
13

A chemist has dissolved a certain substance in water. The chemist knows that more of the substance could be dissolved into the w

ater before it stops dissolving. Therefore, the current solution is
Chemistry
2 answers:
Semenov [28]3 years ago
6 0

The current solution is \boxed{{\text{unsaturated}}}.

Further explanation:

The maximum amount of solute particles that can be dissolved in fixed amount of solvent to form a saturated solution is called solubility of a salt. The units of solubility are often expressed as {\text{g}}/100{\text{ mL}}. Depending upon solubility the solution can be of three types:

1. Saturated solution

2. Unsaturated solution

3. Supersaturated solution

The saturated solution may be defined as a solution that has maximum amount of solute dissolved and that cannot accommodate any further solute. Such a solution has some undissolved substance at the bottom.

The unsaturated solution may be defined as the solution in which the solute concentration is smaller than the maximum amount that can be added and hence more amount can be easily added.

The supersaturated solution refers to the solution in which the solute concentration exceeds the maximum amount that can be added. Such a solution is prepared when a solution is heated to a certain temperature to dissolve this solute and then slowly cooled down to lower temperatures.

Since more solute can still be dissolved in the solution hence the current solution is unsaturated.

Learn more:

1. Determination of supersaturated solution: brainly.com/question/8834703

2. Type of mixture: brainly.com/question/11506142

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Solutions

Keywords: solute, solvent,saturated solution,unsaturated solution,supersaturated solution, unsaturated and concentration.

Tems11 [23]3 years ago
3 0

Answer is: the current solution is unsaturated.

Unsaturated solution means that more of a substance can be dissolve.

For example:

Solubility of potassium chlorate (KClO₃) at 100 grams of water at 80°C is 37.5 g, that means that all 37.5 g is completely dissolves, this is the saturated solution.

If we add 20 grams of potassium chlorate in 100 grams of water, there is less solute than the saturated solution, so this is unsaturated solution.

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Identify one type of noncovalent bond present in each solid.
NeX [460]

Answer:

Explanation:

The question is not complete, the cmplete question is:

Identify one type of noncovalent bond present in each solid.

1) Table salt (NaCl)                2) Graphite (repeating)

a. hydrogen bonds

b. ionic interactions

c. van der Waals interactions

d. hydrophobic interactions

Answer:

1) Table salt

b. ionic interactions

Ionic bond are formed between atoms with incomplete outermost shell. Some atoms add electrons to their outermost shell to make the shell complete hence making it a negative ion while some atoms loses their electron to make the outermost shell complete becoming a positive ion. In NaCl, sodium (Na) has 1 electron in its outermost shell which it transfers to Cl which has 7 electrons in the outermost shell. Hence after the bonding the outermost shell of the atoms become complete.

2) Graphite

c. Van Der Waals interaction

Van der waal  forces are weak interaction between molecules that exist between close atoms. Carbon atoms in graphite planes have covalent bond, these graphite planes are known as graphenes. Bonds between graphenes are very weak and are van der waals forces.

7 0
3 years ago
According to Figure 25-2, is the Sun brighter than white dwarfs? 100 pointws will mark brainliest
Troyanec [42]

Answer:

the sun is more brighter than white dwarfs

because of above reason.

5 0
3 years ago
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How many moles of nitrogen gas are in a flask with a volume of 0.25 L at a pressure of 2.96 atm and a temperature of 300 K
aniked [119]

<u>Answer:</u> The number of moles of nitrogen gas is 0.030 moles

<u>Explanation:</u>

To calculate the number of moles of nitrogen, we use the equation given by ideal gas which follows:

PV=nRT

where,

P = pressure of the nitrogen gas = 2.96 atm

V = Volume of the gas = 0.25 L

T = Temperature of the gas = 300 K

R = Gas constant = 0.0821\text{ L. atm }mol^{-1}K^{-1}

n = number of moles of nitrogen gas = ?

Putting values in above equation, we get:

2.96atm\times 0.25L=n\times 0.0821\text{ L. atm }mol^{-1}K^{-1}\times 300K\\\\n=\frac{2.96\times 0.25}{0.0821\times 300}=0.030mol

Hence, the number of moles of nitrogen gas is 0.030 moles

6 0
3 years ago
Chalcopyrite is an ore with the composition cufes2. what is the percentage of iron in a 39.6 g sample of this ore? answer in uni
iren2701 [21]
<span>Well it depends on percentage by what, but I'll just assume that it's percentage by mass. For this, we look at the atomic masses of the elements present in the compound. Cu has an atomic mass of 63.546 amu Fe has 55.845 amu and S has 36.065 amu Since there are 2 molecules of Sulfur for each one of Cu and Fe, we'll multiply the Sulfur atomic weight by 2 to obtain 72.13 amu So we have not established the mass of the compound in amus 63.546 + 55.845 + 72.13 = 191.521 That is the atomic mass of Chalcopyrite. and Iron's atomic mass is 55.845 So to get the percentage, or fraction of iron, we take 55.845 / 191.521 Which comes out to 29.15% by mass Mass of the sample is not needed for this calculation, but since the question mentions it I would go ahead and check if the question isn't also asking for the mass of Iron in the sample as well, in which case you just find the 29.15% of 67.7g</span>
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4 years ago
A container of oxygen gas is at STP. If this sample is put into an oven at 280 C, what would its pressure be, in atmospheres?
Leni [432]

Explanation:

Step 1:

Data obtained from the question. This include the following:

Initial pressure (P1) = 1atm

Initial temperature (T1) = 0°C = 0°C + 273 = 273K

Final temperature (T2) = 280°C = 280°C + 273 = 553K

Final pressure (P2) =...?

Step 2:

Determination of the new pressure of the gas.

Since the volume of the gas is constant, the following equation:

P1/T1 = P2/T2

will be used to obtain the pressure. This is illustrated below:

P1/T1 = P2/T2

1/273 = P2 / 553

Cross multiply

273x P2 = 553

Divide both side by 273

P2 = 553/273

P2 = 2.03atm

Therefore, the new pressure of the gas will be 2.03atm

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3 years ago
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