The graph above shows the titration curve that resulted when a sample of 0.1 M monoprotic acid was titrated with a solution of NaOH. Based on the graph, the pKa of the acid is closest to

(A) 3.0
(B) 4.0
(C) 6.0
(D) 8.0
(E) 12.0

Answer:

14 mol O₂

Explanation:

The reaction between CO and O₂ is the following:

CO + O₂ → CO₂

We balance the equation with a coefficient 2 in CO and CO₂ to obtain the same number of O atoms:

2CO + O₂ → 2CO₂

As we can see from the balanced equation, 1 mol of O₂ is required to react with 2 moles of CO. Thus, the conversion factor is 1 mol of O₂/2 mol CO. We multiply the moles of CO by the conversion factor to calculate the moles of O₂ that are required:

28 mol CO x 1 mol of O₂/2 mol CO = 14 mol O₂

Answer:

For gene therapy, stem cells can be trained in a lab to become cells that can help fight disease. Liposomes. These fatty particles have the ability to carry the new, therapeutic genes to the target cells and pass the genes into your cells' DNA.

Mark me as brainlest please!

Answer:

mass is the amount of matter in an object

Explanation:

Answer:

8 m/s

Explanation:

The Formula

⇒ v = final velocity

⇒ u = initial velocity

⇒ a = acceleration

⇒ t = time taken

Given

Solving

A chemist dilutes a 1.0 ml sample of 2.0M KNO₃ by adding water to it. If the concentration of the solution that is obtained is 0.0080 m, then its volume is 250mL.

Volume for the given equation will be calculated by using the below equation as:

M₁V₁ = M₂V₂, where

M₁ = molarity of KNO₃ = 2M

V₁ = volume of KNO₃ = 1mL

M₂ = molarity of final solution = 0.0080M

V₂ = volume of final solution = ?

On putting these values on the above equation, we get

V₂ = (2)(1) / (0.0080) = 250mL

Hence option (2) is correct.

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Answer:

B. 250 mL

Explanation:

Correct on Edge 2022!!!

Good luck everyone, you got this! Have a great day!

Answer:

pretty sure it is

2

1

2

3

1

2

Explanation:

Explanation:

Lithium Sodium Potassium group 1

Hydrogen proton +1

Iron Fe2+

Answer:

Its a chemical conducting electricity

Answer:

Thus, the joules of heat absorbed when 70.0 grams of water is completely vaporised at its boiling point are 158,200.

Answer: Arctic Circle, Tropic of Cancer, Equator, Tropic of Capricorn, and the Antarctic Circle.  Hope this helps.

Answer:

1 mole of any material contains 6.023×1023 elementary particles. Hence, by ratio and proportion, 5.61mol of diatomic hydrogen gas contains 5.61×6.023×1023 hydrogen molecules =3.3789×1024 H2 molecules.

Explanation:

Answer:

b is the correct answer inhibition of cell wall

Hey there!

Sulfanilamide is the classification of the antibiotics that can target the bacteria that’s causing infections.

But the action of the mode of sulfanilamide is: binding of a specific enzyme which simply translates to inhibition of the cell wall

Thus, your answer is: inhibition of cell wall synthesis (Option B.)

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

Answer:
Acid mine drainage
metal contamination,
increased sediment levels in streams

Explanation:

ACID MINE DRAINAGE
Mine waste, heavy metals and acidic water often end up in streams and rivers.

METAL CONTAMINATION
Heavy metals also affect the biodegradability of organic pollutants, making them less degradable and thus causing double the effect of polluting the environment.

Answer: salt and petroleum

Explanation:

Just took this today and im pretty sure this is the right one

Answer:

B. To make life easier.

Explanation:

Although all of the above makes sense, the answer should be B. because it is to help improve how we live.

I hope it helps! Have a great day!

Muffin~

The goal of technology is to make life easier.

A goal is "an idea of the future or desired result that a person or a group of people envision, plan and commit to achieve".

What is technology?

Technology is "the use of scientific knowledge for practical purposes or applications, whether in industry or in our everyday lives".

Hence, the goal of technology is to make our life better.

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Answer: Silver has the highest temp. change and water has the lowest temp. change.

Explanation:

According to the specific heat capacity, water  has lowest specific heat and greatest is that of silver owing to their temperature differences.

Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.

It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.It is different for different substances.

It is given by the formula ,

Q=mcΔT

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The exploration of the mid-cayman rise is intended to discover that what life may have been like before the evolution of photosynthesis.

Mid - cayman rise is an area or era where only some amount of light is coming but still existence of life is present there.

As we know that plants make their own food by the process called photosynthesis in the presence of light, but this is not the scenario for all the time. Before the discovery of photosynthesis plants also prepared their own food.

Hence, option (a) is correct.

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Answer:

A

Explanation:

Glyphosphate, lindane, 2,4-d, chlordane are organic compound that have chlorine in common.

Organic compound are group of chemical substance that have carbon and hydrogen atoms in which the bonds are covalently linked together.

Therefore, Glyphosphate, lindane, 2,4-d, chlordane are organic compound that have chlorine in common and these chemicals are use as herbicides that is kill weeds, or to kill insects or pests because of chlorine present in it.

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Based on the data given, the molar mass of the gas is 165.5 g/mol while the molecular weight of the gas is 165.5 amu

The molar mass of a gas can be obtained from density, temperature and pressure using the formula below:

Molar gas constant, R = R = 0.082 L.atm/mol/K.

Temperature = 150 °C = 423 K

Pressure = 785 torr = 1.033 atm

density = 4.93 g/L

molar mass of gas = 4.93 × 0.082 × 423/1.033

molar mass of gas = 165.5 g/mol

Then, molecular weight of the gas = 165.5 amu

Therefore, the molar mass of the gas is 165.5 g/mol while the molecular weight of the gas is 165.5 amu

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Answer:

55 degrees F - cold water

120 degrees F

the last on I don't know

Answer:

[tex]Diffrence \: between \: graphite \: and \: diamond [/tex]

[tex]\qquad \huge{\sf{point \: 1}} ➫[/tex]

⇛Graphite is soft in nature

⇛Diamond is hardest substance

[tex]\qquad \huge{\sf{point \: 2}} ➫[/tex]

⇛Graphite is a good conductor

⇛Diamond is not a conductor

[tex]\qquad \huge{\sf{point \: 3}} ➫[/tex]

⇛Graphite is grey in colour

⇛Diamond have transperant look

[tex]\qquad \huge{\sf{point \: 4}} ➫[/tex]

⇛Graphite have SP² hybridization

⇛Diamond have SP³ hybridization

[tex]\qquad \huge{\sf{point \: 5}} ➫[/tex]

⇛Graphite have layered structure

⇛Diamond have crystalline structure

Answer:

25.7 g

Explanation:

I don't know what to put here hahaha, I hope my answer helps you ^^

Answer:

None of the above.

Explanation:

None of thesse things are part of the structure of a cow, cows have dished forhead 4 stomachs and angular body not sharp teeth comin when called or hooved feet.

Answer:

A is mg because it is losing 2 electrons

B is N2

C Mg as oxidation is lose of electrons

D is N2 as reduction is gain of electrons

Explanation:

you can easily remember as OIL RIG in term of electrons as Oxidation is Lost of electrons. Reduction is Gain of electrons.

To prepare 0.250 M solution, the 0.0667 mol of KCl should be diluted up to 266.8mL

From the question,

We are to determine to what volume the KCl should be diluted, in order to prepare 0.250 M solution

From the formula,

Numer of  moles = Concentration × Volume

Then, we can write that

[tex]Volume= \frac{Number\ of\ moles}{Concentration }[/tex]

From the given information,

Number of moles = 0.0667 mole

Concentration = 0.250 M

Then,

[tex]Volume = \frac{0.0667}{0.250}[/tex]

Volume = 0.2668 L

Volume = 266.8 mL

Hence, to prepare 0.250 M solution, the 0.0667 mol of KCl should be diluted up to 266.8mL

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Answer: False, I believe.

Explanation: If a Hypothesis is proven correct, then another experiment to strengthen that Hypothesis is should be done.

Answer:

when light travels into the water from the air, it slows down (because water is a more dense substance) which causes it to change direction and makes it seem to bend. this is called refraction. mediums that are more dense have a higher refraction index. for example, air has a ri of 1, but water is about 1.33.

Answer:

the reaction will shift right towards products

Explanation:

Answer:

Are sorbents good for the environment?

Natural Inorganic Sorbents

Second, sorbents that sink should not be used as they could be harmful to the environment. Sinking is a problem with many sorbents, such as untreated peat moss, most inorganic sorbents, and many wood products.

Its major result is to clean out some surface contaminants, which makes it simpler for oil to absorb. On the other hand, pyrolysis, a high-temperature thermal treatment, causes the sorbent to carbonise. In turn, this greatly improves the oil sorption capacity and oil to water selectivity.

When recovering adsorbent materials that cause secondary contamination, lighter, less viscous oil is lost through the pores more readily than heavier, more viscous oils. Application is simple because sorbents can be applied automatically or manually to spills using blowers or fans.

The best sorbents for recovering oil are typically synthetic ones. In some circumstances, a weight ratio of 40:1 for oil to sorbent can be reached, as opposed to 10:1 for organic compounds and only 2:1 for inorganic materials.

A substance used to absorb or adsorb liquids or gases is known as a sorbent. Examples comprise: a substance that works via adsorption and is comparable to molecular sieve material (attracting molecules to its surface). It has strong thermal conductivity and a big interior surface area.

Thus, On the other hand, pyrolysis, a high-temperature thermal treatment, causes the sorbent to carbonise.

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