explain what you think what happen to rubber if too manyn cross limks are formed.​

This indicates that hyaluronic acid clots in the presence of acetic acid.

The ability of hyaluronidase to prevent the development of a tight mucus clot with acetic acid shows the existence of highly polymerized hyaluronic acid. In vitro, highly polymerized hyaluronic acid is produced by cultured cells of different mesenchymal tissues. The concentration of hyaluronic acid in freshly prepared, concentrated embryo extract was determined to be between 210 and 240 mcg/ml.

Hyaluronic acid found in embryo extract was depolymerized in tissue culture with days between medium changes.

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The complete question is

A physician attempts to aspirate a knee joint and obtains 0.1mL of slightly bloody fluid. Addition of acetic acid results in turbidity and a clot. This indicates that

Most studied answer

a)the fluid is synovial fluid

b)hyaluronic acid clots in the presence of acetic acid.

c)hyaluronic acid is part of synovial fluid

the density of concentrated sulfuric acid is 1.84 g/mL when a flask has a mass of 78.23 g when empty and 593.63 g when filled with water and later with sulfuric acid whose mass is 1026.57 g.

Given mass of flask mf = 78.23 g

Mass of flask when filled with water mfw =  593.63 g

Mass of water mw = mfw - mf = 593.63 - 78.23 = 515.4g

Volume of water Vw = Volume of acid Vc = 515.4mL

Mass of flask when filled with acid mfa = 1026.57 g

Mass of acid ma = mfa-mf = 1026.57 - 78.23 = 948.34g

Density = mass(ma)/volume of acid (Va)

= 948.34/515.4 = 1.84 g/mL

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Explanation:

We can assume that room temperature is 25 °C.

The melting point of a pure substance is the temperature at which it changes state from solid to liquid. The metling point of our substance is -187 °C. Since the room temperature is 25 °C we can say that it won't be solid. At least it will be liquid.

The boiling point of a pure substance is the temperature at which it changes state from liquid to gas. The boiling point of our substance is 42 °C. At room temperature we are under that temperature, so it won't convert into a gas. It will remain as a liquid also.

Since room temperature is between the boiling and melting point of our substance, the physical state is liquid.

Answer: liquid

From the  highest to lowest Ionization Energies for beryllium, calcium, magnesium, and strontium, the order is:  Be > Mg > Ca > Sr

Ionization energy is defined as a measure of the difficulty in removing an electron from an atom or ion or the tendency of an atom or ion to give off an electron.

Now, ionization energy usually decreases as it descends in a group.  Thus, from the  highest to lowest for beryllium, calcium, magnesium, and strontium, the order is determined as:

Be > Mg > Ca > Sr

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Answer: B (BE > MG > CA > SR)

Explanation: ON EDGE

Answer:

C8H16

Explanation:

First thing to do here is to calculate the molar mass of the compound

Mathematically;

molar mass = mass/number of moles

we can calculate the number of moles using the ideal gas equation

Mathematically;

PV = nRT

n = PV/RT

where p is the pressure at 5 atm

V is the volume at 568 ml = 568/1000 = 0.568 L

R is the molar gas constant which is 0.0821

T is the temperature which is 120+ 273 = 393k

Inserting these values into the equation, we have

n = (5 * 0.568)/(0.0821 * 393)

n = 0.088 moles

So the molar mass = 10/0.088

= 114 g/mol

Now let’s go to the percentages

C = 84.2/12 = 7.016666666666667

H = 15.8/1 = 15.8

divide by the smallest

C = 7.016666666666667/7.016666666666667 = 1

H = 15.8/7.016666666666667 = 2 approximately

The empirical formula is CH2

So for the molecular formula, we have;

(12 + 2)n = 114

14n = 114

n = 114/14 = approximately 8

So the molecular formula of the liquid will be (CH2)n = C8H16

Breathing apparatus filters out harmful particles, vapors, or gases by using filters attached to the masks being used is Air purifying respirator.

An air purifying respirator removes the gases, gases vapors, combination of contaminants from the air. There are two types of respirator first which removes the dust and harmful substances and the other is which removes the vapors and gases. there are many benefits of using the air purifier. like related to our lungs , asthma. by filtering out fine particles

Thus, Breathing apparatus filters out harmful particles, vapors, or gases by using filters attached to the masks being used is Air purifying respirator.

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Explanation:

Protons, Neutrons and Electrons are the three primary subatomic particles that form an atom.

Protons and Neutrons are large particles and are densely compacted into the nucleus of the atom. Protons are electrochemically positive in charge and the Neutrons are electrochemically neutral in charge.

Together the protons and Neutrons make up the mass of the atom.

Electrons are electrochemically negatively charged particles that move random around the nucleus. They have a relatively small mass compared to Protons and Neutrons. They are found in electron clouds that surround the nucleus and their movement and properties provide for the bonding characteristics of each atom.

Answer:

A. Compounds

Explanation:

Firstly, don't let the word "pure" confuse you; this is pretty much irrelevant to the question.

The key to answering this question lies in "substance" and "more than one type of element chemically bonded."

Something you ought to memorize is that a substance is either an element or compound. Therefore, you can eliminate choices B./C.

Next, use the part of the definition that says "more than one type of element chemically bonded" to conclude that it's a compound. Not only is this the definition of a compound, but the fact that is says more than one type of element should automatically tell you that it is different from just a regular element (Choice D.).

Answer:

See Explanation

Explanation:

We must first convert the gas pressures to a common unit. I choose to convert all pressures to kiloPascal.

Since;

1 kilopascal = 7.501 torrs

X. =1900tor

X= 1900 × 1/7.501

X= 253.3 Kpa

Since 1 PSI =6.895 kilopascals

132.3PSI = 132.3 × 6.895/1

= 912.2 Kpa

Total pressure = 303.9kPa + 912.2 Kpa + 253.3 Kpa = 1468.8 kPa

For first gas;

303.9/1468.8 × 100 = 20.7%

For second gas;

912.2/1468.8 × 100 = 62.1%

For the third gas;

253.3/ 1468.8 × 100 = 17.2%

Answer:

2,52M

Explanation:

I took the class and added it up

Students can address water and air pollution by organizing seminars to raise awareness and educate others about the issues,

A. Organize seminars

B. recycling and waste disposal

Water pollution and air pollution are significant environmental hazards that require collective efforts to address. Students can play a crucial role in raising awareness and taking action to mitigate these issues. Here are the appropriate answers from the given options:

What can students do to address these environmental hazards?

A. Organize seminars

B. recycling and waste disposal

A. Organize seminars: Students can organize seminars or workshops to educate other students and the community about the deteriorating environmental conditions and the steps needed to improve the area. By sharing knowledge and information, students can raise awareness about the causes and impacts of water and air pollution, as well as the potential solutions to mitigate them. Seminars can provide a platform for experts, scientists, and environmentalists to share their expertise and inspire action.

B. Recycling and waste disposal: Encouraging other students to volunteer for workshops about recycling and waste disposal is an effective step toward addressing environmental hazards. By promoting proper waste management practices, such as recycling, composting, and reducing single-use plastics, students can contribute to minimizing pollution and conserving resources. These workshops can educate students on the importance of responsible waste disposal and provide practical tips and techniques to implement in their daily lives.

In summary, students can address water and air pollution by organizing seminars to raise awareness and educate others about the issues, as well as by promoting recycling and proper waste disposal practices. Through these actions, students can foster a culture of environmental stewardship and inspire positive change in their communities.

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True, when treated with sodium borohydride, D-glucose undergoes reduction and is converted into D-glucitol or sorbitol, which is an alditol.

The reaction of D-glucose with sodium borohydride (NaBH₄) forms an alditol.

Sodium borohydride is a reducing agent that reduces the aldehyde group (-CHO) present in D-glucose to form an alcohol group (-OH).

Here, the reduction process goes as;

R-CHO  +  NaBH₄  +  mild acid (for workup)    →     R-CH2-OH

The addition of one H-atom at carbon and the other at oxygen reduces the aldehyde to alcohol.

Therefore, this results in the formation of an alditol, specifically D-glucitol (also known as sorbitol).

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When the mass of atoms are given, we can easily find out the simplest (Empirical) formula of the molecule.

Here, the Simplest (Empirical) formula for the given alkane is \(C_3H_8\)

Empirical formula is defined as the formula of a compound which gives the simple whole number ratio of the atoms of various elements present in one molecule of compound.

For this problem, we are given the mass in grams of each element.

Begin by finding the moles of each :

No. of mole = Given weight / Atmoic Weight

So,

No. of Moles of Carbon = 9/12 = 0.75

No. of Moles of Hydrogen = 2/1 = 2

Next, derive the Carbon-to-Hydrogen molar ratio by dividing by the lesser number of moles :

C = 0.75/0.75 = 1

H = 2/0.75 = 2.66

The ratio is 1.000 mol of Carbon to 2.66 mol of Hydrogen (\(C_1H_2._6_6\)).

Finally, multiply the ratio by three to get the smallest possible whole number subscripts while still maintaining the correct Carbon-to-Hydrogen ratio :

3 (\(C_1H_2._6_6\)) = (\(C_3H_7._9_8\)) = \(C_3H_8\)

Hence, the Simplest (Empirical) formula for the given alkane is  \(C_3H_8\)

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The original volume of HBr that was titrated can be calculated as the ratio of the moles of HBr to its concentration.

To determine the original volume of HBr that was titrated, we can use the concept of stoichiometry and the equation balanced for the neutralization reaction between HBr and KOH.

The balanced equation is:

HBr + KOH → KBr + H₂O

From the balanced equation, we can see that the stoichiometric ratio between HBr and KOH is 1:1. This means that for every mole of HBr, we need an equal number of moles of KOH to complete neutralization.

First, let's determine the moles of KOH used in the titration:

Moles of KOH = 0.500 M × 0.075 L = 0.0375 mol

Since the stoichiometric ratio is 1:1, this also represents the number of moles of HBr that were neutralized.

Now, we can calculate the original volume of HBr using the concentration of the unknown solution:

Moles of HBr = 0.0375 mol

Concentration of HBr = unknown (let's assume it is C mol/L)

Volume of HBr = Moles of HBr / Concentration of HBr = 0.0375 mol / C mol/L

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Answer:

Explanation:

Question

If 4.5 moles of H2O are produced how many moles of citric acid were used in this reaction

Answer: Cs because its further to the right on the table, meaning its more reactive.

Explanation:

Answer:

Cs

Explanation:

This element is the farthest right, and lowest meaning that its reactivity is very high.

1. valence electrons and electronegativity

2. Both reactivity and electronegativity decrease down a group.

3. Electronegativity decreases down a group and reactivity increases down a group.

4. The number of valence electrons increases from left to right.

5. Cs

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Answer:

1

Explanation:

The redox reaction that occurs during the operation of a battery is best describes as non-spontaneous and occurring in a chemical (voltaic) cell.

Redox reactions are those reactions in which oxidation or reduction reaction occurs. In these reactions, losing of an electron occur.

An example is formation of hydrogen fluoride.

Thus, the correct option is (1) non-spontaneous and occurring in a chemical (voltaic) cell.

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To calculate the work done by expanding the gas in the cylinder, we can use the formula for reversible adiabatic expansion:

Work = (p1V1 - p2V2) / (γ - 1),
where p1 and p2 are the initial and final pressures, V1 and V2 are the initial and final volumes, and γ is the specific heat ratio.
In this case, the initial pressure is 20 atm and the final pressure is 1 atm. Assuming the volume changes, we need more information to proceed with the calculation. However, we can make some comments.
The change in internal energy (ΔU) of the gas is given by the formula

ΔU = Q - W,

where Q is the heat added to the system and W is the work done on the system. Since the expansion is adiabatic (no heat exchange),

ΔU = -W.
The change in enthalpy (ΔH) of the gas is given by the formula

ΔH = ΔU + Δ(PV).

For an adiabatic process,

Δ(PV) = 0,

so ΔH = ΔU.
If the temperature is raised to 1200 K before the expansion begins, the initial conditions change. To determine the work of expansion, we need more information about the volume changes.
When repeating the calculations using argon as the working fluid, the specific heat ratio (γ) changes.

Argon has a different γ value compared to air, which leads to a different result.

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The equilibrium concentrations of N2O₄ and NO₂ after the addition of 1.00 mol NO₂ to a 1.00 L solution are 0.5 M and 3.0 M, respectively.

The reaction N2O4 ⇌ 2NO2 is given. After the addition of 1.00 mol NO2 to a 1.00 L solution, we are to determine the equilibrium concentrations of N2O4 and NO2.

Initial moles of NO2 = 1.00 mol

Initial concentration of N2O4 = 1.5 M

Using the equation N2O₄ ⇌ 2NO₂, the initial concentration of NO₂ can be calculated as follows:

Initial concentration of NO₂ = (0 × 2)/1.5 = 0 M

From the equation N2O₄ ⇌ 2NO₂, it is known that 1 mole of N2O₄ yields 2 moles of NO₂.

Therefore, the number of moles of N2O₄ that dissociate can be determined:

Initial moles of N2O₄ = (1.5 - x)

Total moles of NO₂ = (2 + x)

2 + x = 3.5 moles

x = 1.5 moles

Hence, 1.5 moles of N2O₄ dissociate to form 3.0 moles of NO₂, leaving 0.5 moles of N2O₄ remaining in equilibrium.

The concentrations of N2O₄ and NO₂, the formula for molar concentration is used:

Concentration = Number of moles / Volume of solution

Concentration of N2O₄ = 0.5 moles / 1 L = 0.5 M (as 0.5 moles of N2O₄ remains)

Concentration of NO₂ = 3.0 moles / 1 L = 3.0 M (as 3.0 moles of NO₂ is formed)

Therefore, the equilibrium concentrations of N2O₄ and NO₂ after the addition of 1.00 mol NO₂ to a 1.00 L solution are 0.5 M and 3.0 M, respectively.

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Answer:

All elements, and compounds, all matter in point of fact, are composed of atoms. In a compound, there are 2 or more different types of atoms present that are chemically bound. In an element, there is only the one type of atom.

Explanation:

2Na + 2H2O → 2NaOH + H2

The balanced equation

Answer:

Saturated solution = 180 gram

Explanation:

Given:

Solubility of Z = 60 g / 100 g water

Given temperature =  20°C

Amount of water = 300 grams

Find:

Saturated solution

Computation:

Saturated solution = [Solubility of Z] × Amount of water

Saturated solution = [60 g / 100 g] × 300 grams

Saturated solution = [0.6] × 300 grams

Saturated solution = 180 gram

Answer: True

Explanation: It doesn't matter if it is genetics or not. It is just a random thing that can happen. Like Alzheimer.

Answer:

Alcohol, 0.63 I don't know the rest the rest

Explanation:

Answer:

Explanation:

1. Alcohol

2. Marker 1

3. Purple

4. Marker 2

Filling out the lab paper gives you the answers. These were all correct.

Answer:

B

Explanation:

The answer is B, O2

O₂ is the limiting reagent.

A limiting reactant is described as the one that will be consumed first in a chemical reaction.

C₁₀H₈ + 12O₂ → 10CO₂ + 4H₂O

Given, Mass of O₂ = 23.3 g

           Mass of C₁₀H₈ = 18.3 g

Molar mass of O₂ = 32 g

No. of moles of O₂ = 32/23.3 = 1.4 moles

Molar mass of C₁₀H₈ = 128 g

No. of moles of C₁₀H₈ = 128/18.3 = 6.9 = 7 moles

According to the equation,

1 mole of C₁₀H₈ yields 10 moles of CO₂. So, 7 moles of C₁₀H₈, give 70 moles of CO₂.

12 moles of O₂ yields 10 moles of CO₂. So, 1.4 moles of O₂ give 1.16 moles of CO₂.

We do know, however, that based on our balanced equation, if we were to totally react all 1.4 moles of O2, we could only produce a maximum of 1.16 moles of CO2. Even while there is enough C10H8 to generate more, the amount of O2 we have is a limiting factor because it will be consumed first.

So, our limiting reactant is O₂.

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The type of reaction of given reaction, 2 AlCl₃ (aq) + 3 Br₂ (l) → 2 AlBr₃ (aq) + 3 Cl₂ (g), is single displacement reaction.

In this type of reaction, one element replaces another element in a compound, forming a new compound and an element as products. In this case, the aluminum in AlCl₃ is replaced by bromine from Br₂, resulting in the formation of AlBr₃ and the release of chlorine gas (Cl₂).

Single displacement reactions are characterized by the exchange of one element for another within a compound, which is evident in this example. This reaction differs from other types of reactions, such as double displacement, synthesis, combustion, or decomposition, as there is no formation of water, no combination of two elements to form a compound, no reaction with oxygen, and no breaking apart of a single compound into simpler substances, respectively.

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Answer:

In biological systems, matter is continuously changing states through chemical processes. For example, carbon in the form of the gas carbon dioxide is changed into glucose, a solid. This change, of course, occurs during photosynthesis.