a chemist decomposes 1.006 g of nahco3 and obtains 0.0334 g of na2co3. what are the units on the theoretical yield, the actual yield and percent yield?

Answer:

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

\(P_1V_1 = P_2V_2\)

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we're finding the new pressure

\(P_2 = \frac{P_1V_1}{V_2} \\\)

We have

\(P_2 = \frac{350 \times 0.85}{450} = \frac{297.5}{450} \\ = 0.661111...\)

We have the final answer as

Hope this helps you

Explanation:

d because black bla black bla

Answer:

Slow down

Explanation:

In humid conditions plant transpiration rates decrease.

The conjugate acid is H2SeO4 and the conjugate base pairs in the reaction is H2O.

The full equation of the reaction is

H2SeO4 + H2O----- H3O^+(aq) + HSeO4

Conjugate base are those substance formed when an acid loses a hydrogen ion. Considered a base because it can gain a hydrogen ion to reform the acid.

The conjugate acid is the species that donate a proton to the conjugate base, hence H2SeO4 is the conjugate acid while H2O is the conjugate base because it accepts a proton from H2SeO4.

Thus we concluded that the conjugate acid is H2SeO4 and the conjugate base pairs in the reaction is H2O.

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The elements with the corresponding letters are Carbon (C), Krypton (Kr), Calcium (Ca), and Scandium (Sc)

The electrons in an atom's highest occupied main energy level are known as valence electrons. The two electrons in the 1s sublevel of second period elements are known as inner-shell electrons and are not directly involved in the reactivity of the element or the production of compounds.

You are aware that the number of protons in the nucleus and electrons encircling the nucleus must be equal in a neutral sodium atom. As a result, sodium possesses one electron on its third energy level, or 3s sublevel.

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The reaction between 2-methyl-2-pentanol and sulfuric acid to yield 2-methyl-2-pentene goes via an elimination reaction

Elimination reactions are those that proceed by the removal of one or more atoms or functional groups from the reactants, resulting in the formation of a new double bond or π bond in a product. An example of an elimination reaction is the dehydration of alcohols.In this particular reaction, 2-methyl-2-pentanol (an alcohol) reacts with sulfuric acid to produce 2-methyl-2-pentene, which is an alkene.

The reaction mechanism proceeds via an elimination reaction, where the OH group and a hydrogen ion (H+) are removed from the reactant, resulting in the formation of a double bond between the adjacent carbon atoms in the product.The reaction can be represented as follows:CH3C(CH3)2CH(OH)CH3 + H2SO4 → CH3C(CH3)2C=CH2 + H2O + H2SO4In conclusion, the reaction between 2-methyl-2-pentanol and sulfuric acid to yield 2-methyl-2-pentene goes via an elimination reaction.

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dipole: dipole interactions

- dispersion forces (London forces)

- hydrogen bonds

as the attractive forces between molecules becomes larger, it takes more energy to separate them

- as a result, vapor pressures, boiling points and melting points will be larger

occur between molecules that have a permanent dipole moment

- H-Cl----H-Cl

The increased use of plastics has implications for the availability of petroleum, as it drives up demand, consumes resources during production, and contributes to environmental issues.

The increase in the use of plastics affects the availability of petroleum in several ways. Firstly, since plastics are made from petroleum, the demand for plastics leads to a higher demand for petroleum as the raw material. This increased demand can put pressure on the petroleum industry to extract and produce more petroleum to meet the needs of plastic production.

Additionally, the production of plastics requires the refining and processing of petroleum, which consumes energy and resources. This process can have environmental impacts, such as air and water pollution, which further affects the availability of petroleum and its sustainability.

Moreover, the widespread use of plastics leads to the accumulation of plastic waste. The disposal and management of this waste require resources and can contribute to pollution and environmental degradation. As a result, efforts to reduce plastic waste and transition to more sustainable alternatives can help alleviate the pressure on petroleum resources.

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Answer:

I think it is agitation

Explanation:

The given statement is false - outside city limits, the minimum distance for parking cars from a warning cross indicating a railroad crossing is 50 meters (165 feet).

Within 100 feet of a railroad crossing, bridge, tunnel, or other potentially dangerous location.

To ensure the safety of drivers on the road, the relevant authorities have made a number of rules regarding parking cars and other vehicles.

The authorities have made regulations regarding car parking close to railroad crossing signs in consideration of public safety and potential conditions relating to traffic accidents.

Because trains follow a different route and are a different mode of transportation, sometimes they must cross over the sides of the road.

The maximum length for parking a car outside the city limits has been set at 50 meters in order to prevent accidents that might happen as a result of track failure or other technical issues.

The same limit for parking a car inside the city's boundaries, however, has been set to at least 10 meters, or roughly 33 feet, due to space restrictions.

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Answer:

243 miles in 3 hours

Explanation:

81 mph x 3 hours

243 miles in 3 hours

When constructing electron configurations for ions, we subtract electrons for a positive ion.

When an atom loses one or more electrons to form a positively charged ion, the resulting ion has fewer electrons than the neutral atom. This means that the electron configuration for the ion must be adjusted to reflect the change in the number of electrons.

To determine the electron configuration for a positive ion, we start with the electron configuration of the neutral atom and then remove electrons from the highest energy level first. For example, the electron configuration for a neutral sodium atom is 1s² 2s² 2p⁶ 3s¹. When sodium loses its valence electron to form a sodium ion (Na+), the resulting ion has the electron configuration of neon: 1s²2s² 2p⁶.

By subtracting one electron from the neutral sodium atom's electron configuration, we can see that the resulting ion has the same number of electrons as a neutral neon atom. This makes sense because both sodium and neon are in the same period of the periodic table and have the same number of electron shells.

The steps that should be considered while constructing electron configurations for ions are:-

1. Identify the element and its neutral electron configuration.
2. Determine the charge of the ion (positive or negative).
3. If the ion is positive, subtract the number of electrons equal to the charge from the neutral electron configuration.
4. If the ion is negative, add the number of electrons equal to the charge to the neutral electron configuration.
5. Write the new electron configuration for the ion.

Therefore, 'subtract' is the correct option.

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Answer:

E = 1.89×10⁻¹⁹ J

Explanation:

Given data:

Wavelength of photon = 105 nm (105 ×10⁻⁹ m)

Energy of photon = ?

Solution:

Formula:

E = hc/λ

h = plancks constant = 6.63×10⁻³⁴ Js

c = speed of wave = 3×10⁸ m/s

by putting values,

E =  6.63×10⁻³⁴ Js ×3×10⁸ m/s / 105 ×10⁻⁹ m

E = 19.89×10⁻²⁶ J.m / 105 ×10⁻⁹ m

E = 0.189×10⁻¹⁷ J

E = 1.89×10⁻¹⁹ J

Answer: C

Explanation:

The assertion is untrue. Alex discovered her pebbles were gone just after tropical storm because to the extremely high wind speed. The consequence of deposition was this.

An organized center of low pressure known as a tropical storm develops over warm tropical waters. Tropical storms can have thermal heat surface winds of 63 to 118 km/h (39 to 73 mph).

These are their classifications: A tropical cyclone having sustained winds in excess exceeding 38 kph (33 knots) or even less is referred to as a tropical depression. A tropical storm is a cyclone with winds that may reach maximum sustained speeds of 39 to 73 mph. A hurricane is a tropical storm with winds that may reach miles per hour (64 knots) or more.

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NH3 has 1 Nitrogen atom and 3 hydrogen atoms.

Hydrogen is the chemical element that is placed separately from the other elements because it has atomic number 1.

It is the simplest chemical element (consisting of only one proton and one electron) with atomic number 1.

It is the lightest of the elements and the most abundant in the universe and in the earth's crust,  in the atmosphere, hydrogen is found as a colorless, odorless and flammable gas, in its molecular form H2.

Therefore, we can conclude that Hydrogen is the chemical element that is placed separately from the other elements because it has atomic number 1.

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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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If more \(H_{2}\) and \(N_{2}\) are added to the reaction 3\(H_{2}\) + N2 → 2\(NH_{3}\) after it reaches equilibrium, two events will occur Shift in Equilibrium and Increased Yield of \(NH_{3}\)

1. Shift in Equilibrium: According to Le Chatelier's principle, when additional reactants are added, the equilibrium will shift in the forward direction to consume the added reactants and establish a new equilibrium. In this case, more \(NH_{3}\) will be produced to counteract the increase in \(H_{2}\) and \(N_{2}\).

2. Increased Yield of \(NH_{3}\): The shift in equilibrium towards the forward reaction will result in an increased yield of \(NH_{3}\). As more \(H_{2}\) and \(N_{2}\) are added, the reaction will favor the production of \(NH_{3}\) to maintain equilibrium. This will lead to an increase in the concentration of \(NH_{3}\) compared to the initial equilibrium state.

It is important to note that the equilibrium position will ultimately depend on factors such as the concentrations of \(H_{2}\), \(N_{2}\), and \(NH_{3}\), as well as the temperature and pressure of the system. By adding more reactants, the equilibrium will adjust to achieve a new balance, favoring the formation of more \(NH_{3}\).

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Answer:

90 mL

0.09 Liters

Explanation:

Givens

1 cc of solution = 1 mL

0.75 cc / min needed to go in intravenously.

2 hours needed.

? Liters

Solution

1 hour = 60 minutes

1 hours = 2 * 60 = 120 minutes

rate = 0.75 cc/minute

Liters = rate * time

Liters = 0.75 cc * 120 minutes

Liters = 90 cc

That's not the answer.

1 Liter has 1000 mL or ccs

x Liter has 90 mL          

Equation

1/x = 1000 / 90

Solution

Cross multiply

1000x = 90*1           Divide by 1000

x = 90/1000

x = 0.09 Liters.

Answer:

Explanation:

Methanes boiling point would be higher than water's

Water is a liquid because particles are held close to one another by hydrogen bonds, whereas methane is a gas because the weak IMF lets particles to spread out.

Hydrocarbon methane ( CH4 ) is a main constituent of natural gas. Because methane is a greenhouse gas (GHG), its presence in the atmosphere has an impact on the planet's climate and temperature.

A range of anthropogenic (influenced by humans) and natural sources release methane into the atmosphere.

The significant difference in polarity between oxygen and hydrogen causes the water molecules to be dipolar. As a result, a strong hydrogen bond forms between the H and O of nearby water molecules, packing the water molecules so closely together that water is a liquid at ambient temperature.

Thus, water is a liquid because particles are held close to one another by hydrogen bonds, whereas methane is a gas because the weak IMF lets particles to spread out.

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Answer:

identify the atoms on each side.

Count the atoms on each side.

Use coefficients to increase the atoms on each side.

Check to make sure you have the same number of each type of atom on each side.

Explanation:

The concept behind balancing chemical equations is to ensure that they comply with the law of conservation of matter. This helps to make chemical equations quantitatively meaningful.

The subscript of the formula must not be changed in an attempt to balance a chemical equation.

(b) false

It is not ok to pour it back in the bottle

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The integration be for the dimethyl carbonate peak is 1.75.

To calculate the integration for the dimethyl carbonate peak, we need to first calculate the mole fraction of each component in the mixture. The mole fraction of a component in a mixture can be calculated as follows:

Mole fraction = (component's mass) / (total mass of mixture)

Next, we need to use the relationship between the mole fraction and the area percent (also known as integration) in a chromatogram. The area percent of a component in a mixture is proportional to its mole fraction. If the acetone peak is set to an integration of exactly 1, then we can use the following equation to calculate the integration for the dimethyl carbonate peak:

Integration of dimethyl carbonate = (Mole fraction of dimethyl carbonate) (Mole fraction of acetone) x (Integration of acetone)

Given the mass percent of each component:

Acetone = 20% = 0.20

Cyclohexane = 45% = 0.45

Dimethyl carbonate = 35% = 0.35

We can calculate the total mass of the mixture as:

Total mass = 0.20 + 0.45 + 0.35 = 1

And then, we can calculate the mole fraction of each component as follows:

Mole fraction of acetone = 0.20

Mole fraction of dimethyl carbonate = 0.35

Finally, we can calculate the integration for the dimethyl carbonate peak as follows:

Integration of dimethyl carbonate = (Mole fraction of dimethyl carbonate) (Mole fraction of acetone) x (Integration of acetone) = (0.35) / (0.20) x (1) = 1.75

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The StartBracket upper O upper H superscript minus EndBracket equals StartFraction equation [OH-] = 1.0 x \(10^_-14\)/ [H+] is used to calculate [OH-] from [H+]. It is derived from the ion product constant for water.

The condition that accurately demonstrates the way that you could work out [OH-] from [H+] is:

[Goodness ] = 1.0 x \(10^_-14\)/[H+]

This condition is gotten from the particle item consistent for water, which is:

Kw = [H+][OH-] = 1.0 x \(10^_-14\)

At 25°C, the convergence of H+ and Gracious in unadulterated water are equivalent and each is equivalent to 1.0 x\(10^_-7\) mol/L. In this way, the pH of unadulterated water is 7.

On the off chance that the grouping of H+ in an answer is known, the centralization of Goodness can be determined involving the particle item consistent for water and reworking the condition to settle for [OH-]. This is on the grounds that the convergence of H+ and Goodness are conversely relative to one another.

Assuming the pH of the arrangement is known, the grouping of H+ can be determined utilizing the condition:

pH = - log[H+]

and afterward subbed into the situation to ascertain [OH-].

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Explanation:

--KI:Potassium iodide

The Ancient Egyptians used simple sundials and divided days into smaller parts, and it has been suggested that as early as 1,500BC, they divided the interval between sunrise and sunset into 12 parts. ... Known as a clepsydra, it uses a flow of water to measure time.