Help me with this pls I will mark you as brain

156

because it has the electorns in the state by the groubd

One example of a naturally-occurring hydrophilic amino acid is serine. Serine has a hydroxyl (-OH) group on its side chain, which makes it attracted to water molecules and therefore hydrophilic.

This small side chain does not contain any charged functional groups and is therefore nonpolar. Because of this, Glycine does not have strong interactions with water molecules, making it hydrophilic. This means that it is attracted to water and is soluble in it. Additionally, Glycine has two hydrogen bonding sites (the carboxyl and amino groups), so it can form hydrogen bonds with other molecules. This helps it to remain soluble in water, making it a hydrophilic amino acid.

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111900g  is the weight of an object that has the area of 74.6 m² and exerts a pressure of 1500 N/m².

Weight being a force The SI unit for weight is Newton (N), which also happens to be the same as the SI unit for force. When we look at how weight is expressed, we can see how it depends on both mass as well as the acceleration caused by gravity; while the mass might not vary from one location to another, the acceleration caused by gravity does.

Pressure = thrust/ area

              = weight/ area

1500  = weight/ 74.6

weight = 111900g

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Approximately 13.10 grams of \(H_{2}\) will react completely with 6.50 moles of CO.

The balanced chemical equation between CO and  \(H_{2}\) is:

\(CO + H_{2} \rightarrow H_{2}O + C\).

The balanced equation shows that one mole of CO reacts with one mole of  \(H_{2}\). Therefore, the moles of  \(H_{2}\) required will be equal to the moles of CO given.

We are given that the moles of CO is 6.50 moles.

Since the molar mass of  \(H_{2}\) is approximately 2.016 g/mol, we can use the equation:

Grams of  \(H_{2}\) =\({Moles of H_{2} \cdot (Molar mass of H_{2})\)

\(= 6.50 moles \cdot 2.016 g/mol\)

= 13.10 g

Therefore, approximately 13.10 grams (rounded to three significant figures) of  \(H_{2}\) will react completely with 6.50 moles of CO.

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The reaction between team and red hot iron is reversible reaction means that the process can be reversed. Iron oxide will be converted back to iron if the hydrogen produced is not eliminated. As a result, the reaction can keep on.

The reaction between team and red hot iron:

3Fe + 4H₂O ⇋ Fe3O₄+ 4H₂

The reaction between team and red hot iron is reversible because the generated iron oxide is reduced back to iron if the hydrogen is not removed, this process is reversible.

Iron is not particularly reactive at ambient temperature, therefore this reaction only happens when it is red hot (room temperature).

As a result, alkali metals have the ability to react with water to produce hydrogen gas. However, because iron is only moderately reactive, it cannot react with water at room temperature.

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Answer:

800 g of O2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

C3H8 + 5O2 —> 3CO2 + 4H2O

Next, we shall determine the masses of C3H8 and O2 that reacted from the balanced equation. This is illustrated below:

Molar mass of C3H8 = (12×3) + (8×1)

= 36 + 8

= 44 g/mol

Mass of C3H8 from the balanced equation = 1 × 44 = 44 g

Molar mass of O2 = 16 × 2 = 32 g/mol

Mass of O2 from the balanced equation = 5 × 32 = 160 g

From the balanced equation above,

44 g of C3H8 reacted with 160 g of O2.

Finally, we shall determine the mass of O2 needed to react with 220 g of C3H8. This can be obtained as follow:

From the balanced equation above,

44 g of C3H8 reacted with 160 g of O2.

Therefore, 220 g of C3H8 will react with = (220 × 160)/44 = 800 g of O2.

Thus, 800 g of O2 is needed for the reaction.

The volume of the irregular solid from the image that have been shown is  12 mL

To obtain the volume of the irregular solid;

a. Measure the initial volume of water in the cylinder.

b. Carefully lower the irregular solid into the water, ensuring it is fully submerged without trapping any air bubbles.

c. Record the new volume of water in the cylinder.

d. The volume of the irregular solid is equal to the difference between the final and initial water volumes.

The volume is;

32 mL - 20 mL = 12 mL

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Answer:

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.

Explanation:

Your answer should be- that in a chemical reaction mass is neither created nor destroyed.

Explanation:

Is that good?

Which is the best reason to carry out scientific research on climate change?

A. To help people prepare for the future

C. To elect better-informed politicians

D. To win political debates

Answer:

to create jobs for scientists

The volume of this mixture at STP is mathematically given as

v=15.59L

Question Parameters:

A mixture contains 5.00 g

Generally, the equation for the number of moles   is mathematically given as

n=mass/molar mass

For O2

nO=5/32

nO=0.156mol

For N2

nN=5/28.02

nN=0.178

For CO2

nCO2=0.114mol

For Ne

nNe=0.248

In conclusion, total moles present

nT=0.156mol+0.178+0.114mol+0.248

nT=0.696

Hence, volume at stp

V=0.696*22.4

v=15.59L

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The factor identified as not associated with (and possibly causing) type 1 diabetes mellitus is option c) dysfunctional insulin receptors.

Insulin-producing cells in the pancreas are destroyed in type 1 diabetes mellitus, an autoimmune condition. Type 1 diabetes mellitus is thought to be caused by or be influenced by the following factors:

A hormone called insulin is produced by beta cells in the pancreas. It is essential for controlling blood sugar levels and making it easier for cells to absorb glucose for use as fuel. Insulin signals cells in the liver, muscle, and fat tissues to absorb glucose from the bloodstream, assisting in the maintenance of normal blood sugar levels.

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Answer:

a.)cations; free to move around

b.)cations; fixed in place

The hominid fossil is 200 years old.

We'll begin by calculating the number of half-lives that has elapsed.

2ⁿ = N₀ / N

2ⁿ = 15424 / 14942

2ⁿ = 1.03

Take the log of both side

Log 2ⁿ = Log 1.03

nLog 2 = Log 1.03

Divide both side by Log 2

n = Log 1.03 / Log 2

n = 0.04

Finally, we shall determine the age of the hominid fossil.

t = n × t½

t = 0.04 × 5000

t = 200 years

Therefore, the hominid fossil is 200 years old.

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When NaOCH2CH3 is in solution, the spectator counterion is Na+.

А spectаtor ion is аn ion present in а chemicаl solution but does not pаrticipаte in the chemicаl reаction. The аlkаli metаls of Group 1 аnd the hаlogens of Group 17 in the periodic tаble аre the spectаtor ions.

NaOCH2CH3 will dissociate into its constituent ions, Na+ and OCH2CH3-, in solution. The Na+ ion is the spectator counterion because it does not participate in the reaction and remains unchanged throughout the process. The OCH2CH3- ion, on the other hand, may participate in the reaction and undergo changes. Therefore, the Na+ ion is the spectator counterion in this instance.

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Answer:

\(\boxed {\boxed {\sf SO_3}}\)

Explanation:

An empirical formula shows the smallest whole-number ratio of the atoms in a compound.

So, we must calculate this ratio. Since we are given the amounts of the elements in moles, we can do this in just 2 steps.

The first step is division. We divide the amount of moles for both elements by the smallest amount of moles.

There are 0.300 moles of sulfur and 0.900 moles of oxygen. 0.300 is smaller, so we divide both amounts by 0.300

The next step is writing the formula. We use the numbers we just found as the subscripts. These numbers go after the element's symbol in the formula. Remember sulfur is S and there is 1 mole and oxygen is O and there are 3 moles.

This formula is technically correct, but we typically remove subscripts of 1 because no subscript implies 1 representative unit.

\(\bold {The \ empirical \ formula \ for \ the \ compound \ is \ SO_3}}\)

Answer:

The molecular geometry would be linear

Explanation:

Carbon Dioxide has 2 electron domains which would result in a linear geometry, they're not bent because they the lone pairs of electrons are pretty far from each other

This should be a diagram of their structure (Sorry for the terrible drawing skills was in a hurry)

The liquid that is been dispensed during titration as regards this question is Titrant.

It is used in the in measurements of variable amounts of liquid ,this apparatus helps in dispensation   of liquid, especially when performing titration.

Therefore, burrete is used in volumetric analysis.

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Answer:

Into what protein structure is spider silk found?

= Primary structure

I HOPE IT HELP YOU

Answer:

No mass loss

Explanation:

The mass of ice and the water in the different state are equal because the same of quantity of matter is present in both state of matter of matter.

The formation of solid magnesium chloride (MgCl₂) by the reaction between chlorine gas (Cl₂) and magnesium metal (Mg) at high temperatures is classified as a synthesis reaction or a combination reaction.

Synthesis reactions involve the combination of two or more substances to form a single product. In this case, chlorine gas and magnesium metal combine to produce magnesium chloride as the sole product.

The balanced chemical equation for this synthesis reaction is:

Mg + Cl₂ ⇒ MgCl₂

Hence, the reaction between chlorine gas and magnesium metal to form solid magnesium chloride indicates a synthesis reaction, as the elements combine to form a compound.

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Answer:

i need points

Explanation:

becuase

Answer: 29.3

Explanation:

22÷9=2.44444444

2.44444444×12=29.333333333

Answer:

top one is anaphase and the middle one is cytokinesis can't see enough of the bottom one to tell

Explanation:

There are two ways ,either go with sulpher or go with silver .

Let's go with sulpher

Moles of sulphur

\(\\ \rm\rightarrowtail \dfrac{350}{32(8)}\)

\(\\ \rm\rightarrowtail \dfrac{350}{256}\)

\(\\ \rm\rightarrowtail 1.36mol\)

1 mol of sulphur forms 8mol silver sulphide.

Moles of silver sulphide

\(\\ \rm\rightarrowtail 1.36(8)\)

\(\\ \rm\rightarrowtail 10.88mol\)

Mass of Ag_2S

There is no gaseous product when NaNO3 reacts with 6M HCl.

We must note that gas evolution is one of the signs that a chemical reaction has taken place. Hence, we must consider the options and look out for an option in which reaction with HCl does not lead to a gaseous product. This is the option that does not lead to evolution of a gas.

Let us consider the reaction; NaNO3(s) + HCl(aq) ---> NaCl(s) + HNO3(aq), there is no gaseous product hence NaNO3 does not result in gas evolution upon addition of 6M HCl.

Missing parts;

Addition of 6 M HCl to which substance will NOT result in gas evolution?

(A) Al

(B) Zn

(C) K2CO3

(D) NaNO3

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The current needed to deposit 2.45 g of ni in 3 hours and 15 minutes from a ni(no3)2 solution is approximately 0.084 amperes.

The first step in solving this problem is to determine the amount of charge required to deposit 2.45 g of ni. This can be done using Faraday's law, which states that the amount of charge required to deposit a given amount of a substance is proportional to its atomic weight and the number of electrons involved in the reaction.

The atomic weight of ni is 58.69 g/mol, and each ni ion requires two electrons to be deposited. Therefore, the amount of charge required to deposit 2.45 g of ni can be calculated as follows:

(2.45 g)/(58.69 g/mol) x (2 electrons/ni) x (1 mole/6.022 x 10^23 electrons) = 2.501 x 10^20 electrons

The next step is to determine the time required to deposit this amount of charge. This can be done using the equation:

Q = It

where Q is the amount of charge (in coulombs), I is the current (in amperes), and t is the time (in seconds).

Since we are given the time in hours and minutes, we need to convert it to seconds:

3 hours and 15 minutes = (3 x 60 x 60) + (15 x 60) = 11,700 seconds

Substituting the values we have calculated into the equation, we get:

2.501 x 10^20 electrons = I x 11,700 seconds

Solving for I, we get:

I = 2.501 x 10^20 electrons/11,700 seconds = 0.084 amperes

Therefore, the current needed to deposit 2.45 g of ni in 3 hours and 15 minutes from a ni(no3)2 solution is approximately 0.084 amperes.

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First, we will calculate the number of moles of mixture of Xenon and Neon gases.Number of moles of mixture of Xenon and Neon gases:

Let x be the mole fraction of Neon.

Therefore, (1 - x) is the mole fraction of Xenon

.Mole fraction of Neon + Mole fraction of Xenon = 1x + (1 - x) = 1x = 1 - (1 -

x = 0 + x

x = 0.279

Mole fraction of Neon = 0.279

Mole fraction of Xenon = 0.721

Number of moles of gas = (Total Pressure * Volume)/(Gas Constant * Temperature)

Number of moles of Xenon = (7.10 atm * 16.75L * 0.721)/(0.08206 * (273 + 30))

Number of moles of Xenon = 8.44 moles

Number of moles of Neon = (7.10 atm * 16.75L * 0.279)/(0.08206 * (273 + 30))

Number of moles of Neon = 3.29 moles

Now, we can calculate the partial pressure of Xenon and Neon.

Partial pressure of Xenon:

Partial Pressure of Xenon = Mole fraction of Xenon * Total Pressure

Partial Pressure of Xenon = 0.721 * 7.10 atm

Partial Pressure of Xenon = 5.12 atm

Partial pressure of Neon

Partial Pressure of Neon = Mole fraction of Neon * Total Pressure

Partial Pressure of Neon = 0.279 * 7.10 atm

Partial Pressure of Neon = 1.98 atm

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