PLZ PLZ PLZ HELPP

1. If you have 4 dozen eggs, how many eggs do you have?
2. If you have 4 moles of gold atoms, how many atoms do you have?

The system is not at equilibrium.

The reaction will proceed to the right to attain the equilibrium.

Let's consider the following reaction.

2 NOBr(g) ⇌ 2 NO(g) + Br₂(g)

The pressure equilibrium constant (Kp) is 60.6. To determine if the system is at equilibrium when the pressure of each component is 1.75 atm, we have to calculate the reaction quotient (Q) and compare it with Kp.

Q = [NO]².[Br₂] / [NOBr]²

Q = (1.75)².(1.75) / (1.75)²

Q = 1.75

Since Q ≠ Kp, the system is not at equilibrium.

Since Q < Kp, the reaction will proceed to the right to attain the equilibrium.

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Answer:

Protons:

- positive

- aka cation

- in the nucleus along with the neutrons

Electrons:

- negative

- aka anion

- situated in the orbital shells/configuration levels (there are many names)

The total mass of sodium chloride is 58.44 g/mol.

The mass of sodium is 22.99 g/mol.

To find the percent sodium in sodium chloride can be found by dividing the amounts.

Therefore, the percent sodium is 39%.

Answer:

The 2 types of behavioral adaptation are migration, and hibernation. Explanation: Adaptation of animal is the fitness towards its environment.

Explanation:

Answer:

based on texture/ feel, oder/smell, melting/boiling point

Explanation:

Answer:

Smell it, drink it, throw it at someone.

Explanation:

If none of that hurts or kills anyone, you can mark everything that would off the list.

She knows that the risk factor is not protective and is not very large. Relative risk measures the likelihood of an event occurring in one group compared to another.

In this case, since the risk factor is not protective and not very large, it suggests that the risk of the event happening is higher in the group with the risk factor compared to the group without it.  Based on this understanding, it is likely that Annie's relative risk value would be greater than 1.

This rules out options a. 0.5 and b. 0.2, as they are less than 1. Option c. 2.0 is a possibility since it is greater than 1, but it is not clear whether the relative risk value is "not very large" or just larger than 1. Option d. 1.2 is a safe choice since it is slightly larger than 1 and not very large, making it the most likely answer.

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Answer:

When plants lose more water than they can take up from the soil, they become water stressed. ... Such drought conditions certainly inhibit the growth of plants. If it goes long enough without water it will die because the plant uses water for a lot of different jobs needed to keep the plant alive, so the long-term effect is that the plant will die if the drought continues.

Explanation:

The Arizona poppy is the summer herb of deserts of southwestern US and has pinnately compound leaves and large snowy flowers. This poppy appears in rainy seasons.  

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symbol ...................

The final volume of the system is 20.75 liters. This can be calculated by using the ideal gas law equation, PV = nRT, where:

Since the change in internal energy is -325 J, and the heat lost is 155 J, we can calculate the temperature of the system using the equation ΔU = nCvΔT, where Cv is the molar heat capacity of an ideal gas at constant volume (7/2 R).

Plugging in our values, we get ΔT = -325/(7/2 * 0.08206 * 4) = -6.5 K. We can then use this temperature and the pressure from before to calculate the volume of the system using the ideal gas law, resulting in V = nRT/P = (4 mol)(0.08206 L atm mol-1K-1)(273.5 K)/(1.00 atm) = 20.75 L.

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Answer:

A

Explanation:

Answer:

HNO3 is the answer HNO3 is the answer

Answer:

I would pick C

The element's most likely oxidation state related to its valence electrons "It indicates how many electrons are required to complete a full valence shell."

An atom's oxidation count would be the charge an atom would have been in the compound were made up of ions.

The amount of electrons given atom needs to lose or gain to achieve the electrical configuration of the next noble gas as well as inert gas is known as valence.

Its only electrons that an element loses were usually its valence electrons. The largest positive oxidation state of a substance is usually determined by the count of valence electrons.

The element's most likely oxidation state related to its valence electrons "It indicates how many electrons are required to complete a full valence shell."

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The movement of chloride ions into the red blood cells (RBCs) in exchange for bicarbonate ions is known as the chloride shift or Hamburger phenomenon.

This occurs in the lungs and helps to regulate the pH of the blood. During gas exchange, oxygen diffuses into the bloodstream and carbon dioxide diffuses out of the bloodstream.

This increase in oxygen levels and decrease in carbon dioxide levels leads to a decrease in the production of bicarbonate ions in RBCs and an increase in the production of chloride ions.

The chloride ions then move into the RBCs to maintain electroneutrality, while bicarbonate ions move out of the RBCs into the plasma.

In tissues, the opposite process occurs, with bicarbonate ions moving into the RBCs and chloride ions moving out of the RBCs, helping to maintain pH homeostasis in the body.

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1.5 × 10²³ atoms Mn

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Step 1: Define

0.25 mol Mn

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

1.5055 × 10²³ atoms Mn ≈ 1.5 × 10²³ atoms Mn

Your question has been heard loud and clear.

Both scientific laws and scientific theories are not based on hypothesis.

Because , scientific laws are proven and so they are real not hypothetical.

Whereas scientifc theories can be hypothetical.

Thank you

\(65.47 \: g \times \frac{12 \: donuts}{25.64 \: g} = 30.64118565\)

\(i \: have \: 31 \: donuts\)

Answer:

30. 6 so 31 donuts

Explanation:

12d→ 25.64g

xd → 65.47g

SO cross multiply or 65.47g ÷ 25.64g. Which gives 2. 55g then divide by 12 to get 30.6 for X. If you want to check the answer substitute X with 31 and see if you get the 6547g

The systems that would be best modeled by an ideal solution are (i) ethane n-decane, (iii) benzene toluene. If any of the solutions are non-ideal, the Scatchard-Hildebrand approach would be appropriate to model the non-idealities. A solution is said to be ideal if the solution behaves like an ideal gas, which means that there are no intermolecular interactions between the molecules of the components. i.e., the solution will obey Raoult's law.

The systems that would be best modeled by an ideal solution are(i) ethane n-decane(ii) water 1-butanol(iii) benzene toluene. An ideal solution occurs when the components of a mixture form a homogeneous mixture that does not exhibit deviations from Raoult's law. Since the ideal mixture is composed of solvent and solute, it is impossible to completely exclude interactions between the two components.  

It is best suited for non-polar and small polar solutes. In this way, the non-ideality of the solution can be predicted. Therefore, if any of the solutions are non-ideal, the Scatchard-Hildebrand approach would be appropriate to model the non-idealities.

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Answer:

1 and 4

Explanation:

Answer:

umm probly glucose and oxygen.??

Explanation:

Answer:

velocity = 100 km/h

Explanation:

To calculate the velocity given the distance travelled and the time taken, we can use the following formula:

\(\boxed{\mathrm{velocity = \frac{distance \ travelled}{time \ taken}}}\).

In the question, we were told that Ayana travelled 60 km in 0.6 h. Using this information and the formula above, we can calculate Ayana's velocity:

velocity = \(\frac{60 \ km}{0.6 \ h}\)

             = 100 km/h

Therefore, her velocity was 100 km/h.

The amount of radon that decomposes after 5.55 days if the sample initially weighed 100.0 grams is 63.4 grams

The decay of radon can be modeled by a first-order decay equation, where the amount of radon remaining after a certain time can be calculated using the half-life.

The decay of a substance can be described by the equation:

N(t) = N₀ * (1/2)^(t / T₁/₂)

Where:

N(t) is the amount of substance remaining after time t,

N₀ is the initial amount of the substance,

T₁/₂ is the half-life of the substance.

Given:

Initial weight of radon sample (N₀) = 100.0 grams

Half-life of radon (T₁/₂) = 3.823 days

Time (t) = 5.55 days

First, we calculate the fraction of radon remaining after 5.55 days using the half-life:

Fraction remaining = (1/2)^(5.55 / 3.823)

Next, we calculate the weight of radon remaining after 5.55 days:

Weight remaining = Fraction remaining * Initial weight

Weight remaining = Fraction remaining * 100.0 grams

Calculating the values:

Fraction remaining = (1/2)^(5.55 / 3.823) ≈ 0.366

Fraction of the sample that has decomposed = 1- fraction remaining = 0.634

The mass of the sample that has decomposed = 0.634 * 100.0 grams ≈ 63.4 grams

Therefore, approximately 63.4 grams of radon would be decomposed after 5.55 days if the initial sample weighed 100.0 grams.

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The inner diameter for a steel stack that exhausts 1,200 m3/min of gases at 1 atm and 400 k is 1.45 m

Stack height means the distance from the ground-level elevation at the base of the stack to the crown of the stack.

If a stack arises from a building or other structure, the ground-level elevation of that building or structure will be used as the base elevation of the stack.

Given is a steel stack that exhausts 1,200 cu.m/min of gases

P= 1 atm and

T= 400 K

maximum expected wind speed at stack height of 12 m/s

The formula for the diameter of chimney

\(\rm d=\sqrt{\dfrac{4Q}{\pi v} }\)

Q =1200 cu.m/min

= 1200 * 0.0166 = 19.92 cu.m/sec

Velocity = 12m/s

\(\rm d=\sqrt{\dfrac{4\times 19.92}{3.14*12} }\\\)

d= 1.45 m

Therefore The inner diameter for a steel stack that exhausts 1,200 m3/min of gases at 1 atm and 400 k is 1.45 m.

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Answer:

1. 2

2. 2

3. 1

4. 2

5. 3

6. The number of waves that pass a point in a second

7. How close the waves are to each other

Explanation:

also, check out this answer key if you need it:

https://rmsteam72.weebly.com/uploads/1/2/7/2/127288658/waves_worksheet_answer_key.pdf

stay safe out there.

Answer:

The equation is already balanced. It is a double replacement.

Explanation:

The equation is balanced since there are the same amounts of each element on both sides. A double replacement is when AB + CD = AD + CB. In this case, Ag (A) reacts with CL(D) and Na (C) reacts with NO3 (B).

Based on the information provided, it seems that a chemical reaction occurred at time t1 that involved the gases SO3 and O2. The change in partial pressure of these gases indicates that a shift occurred in the equilibrium of the reaction.

One possible explanation for the increase in partial pressure of SO3 is that the reaction was exothermic and favored the production of SO3 at the temperature and pressure conditions present. As the reaction proceeded, more SO3 was formed and the partial pressure increased.  At the same time, the decrease in partial pressure of O2 suggests that it was consumed in the reaction to form SO3. This decrease could occur if the reaction was consuming O2 faster than it was being supplied, or if the equilibrium of the reaction favored the consumption of O2 over the production of SO3.

Overall, the change in partial pressures indicates that the chemical reaction caused a shift in the equilibrium of the system towards the production of SO3.

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Electronegativity tends to increase across a period. This is because as you move from left to right across a period, the number of protons in the nucleus increases, while the number of electrons stays the same.  Hence option C is correct.

This means that the effective nuclear charge, which is the net positive charge experienced by the valence electrons, increases. The increase in effective nuclear charge makes it more difficult for the valence electrons to be pulled away from the nucleus, which increases the electronegativity.

Electronegativity tends to decrease down a group. This is because as you move down a group, the number of electrons in the valence shell increases. This increases the shielding effect, which is the effect of the inner electrons in reducing the attractive force of the nucleus on the valence electrons.

The decrease in the attractive force of the nucleus makes it easier for the valence electrons to be pulled away, which decreases the electronegativity.

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Answer:

Molecular formula = SF₆

Empirical formula is SF₆

Explanation:

Percentage of sulfur = 21.95%

Percentage of fluorine = 78.03%

Molar mass of compound = 146.1 g/mol

Empirical formula = ?

Molecular formula = ?

Solution:

Number of gram atoms of S = 21.95 / 32= 0.69

Number of gram atoms of F = 78.03 / 19 =  4.107

Atomic ratio:

                                  S                  :         F

                                0.69/0.69      :       4.107/0.69

                                     1                :         6

S : F =  1:6

Empirical formula is SF₆

Molecular formula:

Molecular formula = n (empirical formula)

n = molar mass of compound / empirical formula mass

Empirical formula mass :

32 + 19×6 = 146

n = 146.1 / 146

n = 1

Molecular formula = n (empirical formula)

Molecular formula = 1 (SF₆)

Molecular formula = SF₆

The water molecules are split into hydrogen and oxygen gases by the electric current. Then, the gases of hydrogen and oxygen are released into the environment. Electrolysis is the name of this procedure.

The water molecules are disassembled by electrolysis using electricity into their component elements of hydrogen and oxygen, which are subsequently liberated as gases.

A procedure called electrolysis employs electric current to separate a substance into its constituent parts. In electrolysis, an electric current is used to drive ions in a solution towards electrodes, where they combine to generate a new molecule. The method is generally used to refine metals and other chemicals as well as to extract metals from their ores.

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The time it takes to drain the unreacted water and make the casting in the slip casting mold made of gypsum is approximately 37 minutes.

The volume of the liquid with cement particles is 5.25 liters, and assuming 10% of water by volume is consumed in the reaction with cement, the initial volume of water added is 5.0 liters. Therefore, the volume of water drained is 5.0 - 10% of 5.0, which is 4.5 liters.

The mold has a cylindrical shape with an inner diameter of 50 cm, which corresponds to a radius of 25 cm. Since there are 100 capillaries per square centimeter, the total number of capillaries in the mold is 100 * π * (\(25^2\)) = 196,350.

The average radius of the capillaries is 100 μm, which is equivalent to 0.1 mm. With a thickness of 1 cm, the total radius of the capillary system is 0.1 + 0.1 = 0.2 cm.

To determine the time it takes for the water to drain, we can use the Hagen-Poiseuille equation, which describes the flow of liquid through a cylindrical capillary:

Q = (π * \(r^4\) * ΔP) / (8 * η * L)

Where:

Q is the volumetric flow rate,

r is the radius of the capillary,

ΔP is the pressure difference,

η is the coefficient of viscosity, and

L is the length of the capillary.

In this case, the pressure difference ΔP can be calculated using the surface tension of water:

ΔP = 4 * γ / r

Where γ is the surface tension of water.

Plugging in the values and solving for Q, we can determine the volumetric flow rate. Dividing the volume of water drained (4.5 liters) by the volumetric flow rate will give us the time it takes to drain the unreacted water.

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