[H+] for a solution is 1 x 10^-7 M. This solution is _____________.
A. acidic
B. basic
C. neutral

Answer:

Moles= 11/44 = 0.25 molesof CO2. Click to see full answer Considering this, how many moles of carbon are in 1 mole of co2? A mole of CO2molecules (we usually just say “a mole of CO2”) has one moleof carbonatoms and two molesof oxygen atoms.

Exxplanation:

Burette is the lab equipment used to estimate the volume of liquid during titration. The volume is measured by the bottom meniscus to the nearest 0.01 mL.

Burette is an instrument used in quantitative analysis like the volume of the sample in the titration methods and is made of a glass tube.

In the volumetric analysis, the final volume of the liquid is measured by locating the lower meniscus and is taken approximately near 0.01 ml as the burettes have markings of 0.1 mL.

Therefore, option a. locate the bottom meniscus and mark nearest to 0.01 mL.

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As the Earth rotates, the circulating air is deflected. Instead of flowing straight, air deflects to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, creating curved paths.

Hurricanes, for example, spin counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere due to the Coriolis effect. The Coriolis effect deflects air from all directions as it flows toward the low-pressure area at the center of a storm.

Winds flowing from the equator to the North Pole and from the North Pole to the equator are deflected to the right by Coriolis Force, while winds flowing north-south and south-north in the southern hemisphere are deflected to the left.

Thus, The Coriolis effect refers to this deflection.

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There are approximately 12.7 grams of phosphorus in a 50-gram sample of aluminum phosphate.

To determine the number of grams of phosphorus in a 50-gram sample of aluminum phosphate, we need to know the molar mass and the chemical formula of aluminum phosphate.

The chemical formula for aluminum phosphate is AlPO4. It indicates that each molecule of aluminum phosphate contains one aluminum atom (Al), one phosphorus atom (P), and four oxygen atoms (O).

To calculate the molar mass of aluminum phosphate, we can add up the atomic masses of its constituent elements based on their stoichiometric ratios:

Molar mass of AlPO4 = (molar mass of Al) + (molar mass of P) + (4 * molar mass of O)

Using the periodic table, we can find the atomic masses of the elements:

Molar mass of Al = 26.98 g/mol

Molar mass of P = 30.97 g/mol

Molar mass of O = 16.00 g/mol

Now, let's calculate the molar mass of aluminum phosphate:

Molar mass of AlPO4 = (26.98 g/mol) + (30.97 g/mol) + (4 * 16.00 g/mol)

= 121.95 g/mol

The molar mass of aluminum phosphate is 121.95 g/mol.

To determine the number of grams of phosphorus in a 50-gram sample of aluminum phosphate, we need to calculate the mass fraction of phosphorus in the compound. The mass fraction is the ratio of the molar mass of phosphorus to the molar mass of aluminum phosphate.

Mass fraction of phosphorus = (molar mass of P) / (molar mass of AlPO4)

= (30.97 g/mol) / (121.95 g/mol)

≈ 0.254

Multiplying the mass fraction by the mass of the sample gives us the grams of phosphorus:

Grams of phosphorus = (mass fraction of phosphorus) * (mass of the sample)

= 0.254 * 50 g

≈ 12.7 g

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Answer:

to change an atom labeled + ion or -ion into a neutral atom, an electron is either added or removed from it

Ep = mgh. energy associated with gravity. Ep = mgh. The labor required to lift an object is equal to the gravitational potential energy it contains.

Potential energy is simply stored energy that has the capacity to perform work as a result of the location or state of the object in question. Potential energy is described as the energy held within a system of physically interfering entities in more physics-focused terminology.

Because of where you choose to establish your zero point—the location at which your potential energy is zero—potential energy may also be negative. A book on a table has more potential energy than the floor, which is the potential energy zero.

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Answer:

It has 5 neutrons

Explanation:

The fact that it is a neutral atom tells us that the number of electrons and protons is the same:

The average mass of an atom is the sum of the number of protons and the number of neutrons:

With the above information in mind we can calculate the number of neutrons:

Answer:

Due to the difference in the relative atomic masses and therefore, the molecular masses of Zn and Pb, one mole of Zn is about 3.2 times lighter than one mole of Pb

Explanation:

From the periodic table, we have;

The atomic number of zinc, Zn = 30

The atomic mass of zinc, Zn = 65.38 amu

The molar mass of zinc, Zn = 65.38 g/mol

The atomic number of lead, Pb = 82

The atomic mass of lead, Pb = 207.2 amu

The molar mass of lead, Pb = 207.2 g/mol

Therefore, whereby equal number of moles of Zn is lost and Pb is gained, we have;

Mass of 1 mole of Zn = 65.38 grams

Therefore, 1 gram of Zn = 1/65.38 moles = 0.0153 moles

0.12 grams of Zn = 0.12×0.0153 = 0.00184 moles of Zn

Given that equal number of moles of Zn and Pb are involved in the reaction, the number of moles of Pb gained = 0.00184 moles

The mass of Pb gained = Number of moles of Pb gained × Molar mass of Pb

The mass of Pb gained = 0.00184 × 207.2 = 0.38 g ≈ 0.4 g.

Amount of Pb gained = 0.43 g ≈ 0.4 g

The possible values of an electron's spin quantum numbers are +1/2 and -1/2.

The spin of an electron is an intrinsic property that describes its angular momentum. According to quantum mechanics, the spin of an electron can have two possible values: +1/2 and -1/2. These values represent the two possible orientations of the electron's spin along a chosen axis. The spin quantum number, denoted as ms, is used to represent these values.

The positive value (+1/2) corresponds to the spin being aligned in the same direction as the chosen axis, while the negative value (-1/2) corresponds to the spin being aligned in the opposite direction.

The spin quantum number is an important concept in quantum mechanics and plays a crucial role in understanding the behavior of electrons in atoms and molecules.

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The possible values of an electron's spin quantum numbers are +1/2 and -1/2. Spin is an intrinsic property of electrons, and it is one of the fundamental quantum numbers that describe their behavior.  

The spin angular momentum of an electron is represented by the spin quantum number, abbreviated as "s." No two electrons in an atom may have the same set of four quantum numbers, which includes the spin quantum number, according to the Pauli exclusion principle.

According to this theory, to discriminate between electrons in the same orbital, their spins must be opposing. There are two conceivable values for the spin quantum number: +1/2 (spin-up) and -1/2. (spin-down).

These numbers show the two opposed directions in which an electron's spin angular momentum may be found along a certain axis. It's crucial to remember that these numbers represent intrinsic characteristics of electrons rather than being chosen at random.

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Answer:

3.62 g/cm³

Explanation:

density = mass ÷ volume

Therefore, do 12.69 divided by 3.5

Answer:

I think its b be ause it looks like a better answer and it has some detail to it

Answer:

oxygen should be present for burning to happen,

To predict the order of boiling points for the substances AIH3, GaCr3, BH3, AICI3, and GaBr3, we need to consider the nature of the intermolecular forces present in each compound. Generally, stronger intermolecular forces lead to higher boiling points. Here is the order of boiling points from highest to lowest:

AICI3: Aluminum chloride (AICI3) has ionic bonding between aluminium and chlorine atoms. Ionic compounds tend to have higher boiling points due to the strong electrostatic forces between the positively and negatively charged ions.

GaBr3: Gallium bromide (GaBr3) is also an ionic compound, similar to AICI3. It has strong ionic bonds between gallium and bromine atoms, resulting in a relatively high boiling point.

GaCr3: Gallium chromate (GaCr3) likely refers to gallium(III) chromate. It is an inorganic compound that does not have a well-known melting or boiling point. However, it is safe to assume that it would have a boiling point similar to or slightly lower than that of GaBr3 since it also contains ionic bonding.

AIH3: Aluminum hydride (AIH3) is a covalent compound with relatively weaker intermolecular forces, such as dipole-dipole interactions or London dispersion forces. These forces are not as strong as the ionic bonds in AICI3 and GaBr3, resulting in a lower boiling point.

BH3: Borane (BH3) is also a covalent compound with weaker intermolecular forces. Boron and hydrogen atoms form covalent bonds, and the boiling point of BH3 is expected to be lower compared to the other compounds listed above.

Therefore, the order of boiling points from highest to lowest is as follows:

AICI3 > GaBr3 > GaCr3 > AIH3 > BH3

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It would be 2.515 yards. This is because to convert cm into yards, you would need to divide the length value by 91.44 so in your case, it would be 230÷ 91.44 which equals 2.51531.

Hope that helps!

Answer: 2.5 grams

Explanation:

Expression for rate law for first order kinetics is given by:

\(t=\frac{2.303}{k}\log\frac{a}{a-x}\)

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process  

a) to calculate the rate constant:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

\(t_{\frac{1}{2}}=\frac{0.693}{k}\)

\(k=\frac{0.693}{2years}=0.346years^{-1}\)

b) to find amount left after 4 years

\(4=\frac{2.303}{0.346}\log\frac{10}{a-x}\)

\((a-x)=2.5g\)

Thus 2.5 g of cesium would remain from a 10 g sample after 4 years

Water and alcohol has no colour. Water has no smell but alcohol smell like musty. Salt more dissolve in water as compared to alcohol.

The water is colourless as well as odorless means it has no smell. Water can dissolve salt because the positive ion of water molecules attracts the negative chloride ions and the negative ion of water molecules attracts the positive sodium ions while on the other hand, the alcohol is colourless means it has no colour. The smell of alcohol is musty and sharp. Salt dissolves less in alcohol, because alcohol molecules have less ions as compared to water. Alcohol is non-polar like oil and salt is polar so it does not dissolve or very little in alcohol.

So we can conclude that Water and alcohol has no colour. Water has no smell but alcohol smell like musty. Salt more dissolve in water as compared to alcohol.

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the amount of bromoethane (in milli- liters) that are used in this reaction is 74.13ml.

Mol wt of P-Acetamido phenol = 151.16. Mol wt of  Bromoethane  = 108.97. Mol wt of  Acetophenetidin (product) = 179.22. Paraacetamido phenol, mol wt=151.16. Bromoethane= 108.97. By the law of mass action, 151.16 g P-Acetamido phenol will react 108.97g Bromoethane to get 179.22 g Acetophenetidin (product) and 80.91 g Hydrobromic acid as a bye product. Since the density of Bromoethane = 1.47g/cc, the quantity of Bromoethane in milliliters = 108.97/1.47 = 74.13 ml. Activated carbon, also known as activated charcoal, is a form of carbon that has been processed to have small, low-volume pores that increase the surface area available for adsorption or chemical reactions.  Activated carbon is used for a wide range of industrial and environmental applications, including purifying air and water, removing impurities from liquids and gases, and recovering valuable chemicals. In the laboratory, activated carbon is commonly used to purify organic compounds, remove dissolved gases from liquids, and purify water.

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Answer:

decomposition

Explanation:

the reactants turn into two different products, thus the reaction is decomposition.

AB -> A + B

Answer:

A: a decomposition reaction in which a metal is reduced

Explanation:

HgO is actually the metal Mercury and in the equation Mercury is being decomposed into the elements Hg and O. (the element for Mercury and Oxygen) So the equation they give you is a decomposition.

Answer:

a)3

b)6

d)24

option c

To determine the new concentration of Fe3+ when 3.00 mL of 0.00200 M iron(III) nitrate is diluted to a total volume of 10.00 mL, we can use the concept of dilution.

First, we need to calculate the number of moles of Fe3+ in the initial 3.00 mL of 0.00200 M iron(III) nitrate. The number of moles can be calculated using the formula:

moles = concentration × volume

moles = 0.00200 M × 0.00300 L

moles = 0.000006 mol

Next, we determine the final volume of the solution, which is 10.00 mL.

Now we can use the dilution formula to find the final concentration:

C1V1 = C2V2

C1 = initial concentration

V1 = initial volume

C2 = final concentration

V2 = final volume

Rearranging the formula:

C2 = (C1V1) / V2

C2 = (0.00200 M × 0.00300 L) / 0.01000 L

C2 = 0.0006 M

Therefore, the new concentration of Fe3+ after dilution is 0.0006 M in a total volume of 10.00 mL.

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R - CO - OH + NaHCO3 → R - CO-O-  Na+     +  H20 + CO2

Here Sodium bicarbonate solution is used to neutralize the excess acetic acid and the acid catalyst in the reaction mixture.

In this reaction the product sodium acetate salt is formed which can be easily removed during work up because of its complete solubility in water. The exact reaction is as follows. Baking soda or bicarbonate of soda is the popular term for sodium bicarbonate, which has the chemical formula NaHCO3 and is also known by its IUPAC designation, sodium hydrogen carbonate[9]. A sodium cation (Na+) and a bicarbonate anion (HCO3) combine to form the salt. In spite of frequently appearing as a fine powder, sodium bicarbonate is a crystalline white solid. It tastes similar to washing soda, with a mildly salty, alkaline flavor (sodium carbonate). Nahcolite is a type of naturally occurring mineral. It is a part of the mineral natron and is present in many mineral springs as a dissolved substance. Due to its long history of use and variety of names, including baking soda, bread soda, cooking soda, and bicarbonate of soda, the salt is frequently seen next to baking powder in supermarkets.

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In the IUPAC name of the compound, Br group is located at  position number 3.

Because the positioning of the double bond has been done with the least number of locants possible.

The double bond is preferred in the provided compound over the bromo group.

As a result, the first carbon has a double bond, and the  carbon 3 has a bromo group.

Thus, we have a double bond at carbon number 1 and bromo group at carbon number 4.

The IUPAC name of the following compound is:

3-Bromobut-1-ene or 3-Bromobutene

IUPAC works for improvement of chemical species by working on  nomenclature and advanced terminology.

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The statement that accurately describes a fission reaction is that more energy is required to split the nucleus of an atom than the energy actually released during a fission reaction. That is option A.

Fission reaction is defined as the disintegration of a heavy unstable nucleus into two or more smaller nuclei with the release of energy.

The energy required to split the unstable nucleus is greater than the one released because heavy elements are involved.

Therefore, the statement that accurately describes a fission reaction is that more energy is required to split the nucleus of an atom than the energy actually released during a fission reaction.

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Answer:

The answer is "Ammonium nitrate is the reactant of this chemical reaction".

Explanation:

The Ammonium nitrate (NH4NO3)  is an ammonium and nitrate ionic crystalline solid. In water and hygroscopic as a strong, it's also highly soluble, although it does not form hydrates.

It uses as a nutrient for generating medications as well as leaven fertilizers and explosive materials. Nitrate in ammonium is sodium bicarbonate ammonium chloride. It is incendiary, an oxidizing agent, and a fertilizer.

The atomic mass of Hafnium is 357.1amu and atomic mass is the total mass of the subatomic particles in an atom and is measured in atomic mass units

Here given data is if in a sample, 10 have mass 176 amu, 38 have mass  177 amu, 54 have mass 178 amu, 28 have mass 179 amu, and 70 have mass 180 amu then

The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope

We have to find average atomic mass = ?

Average atomic mass = atomic weight of Hafnium/100

Now we can substitute the known values

Then, Average atomic mass = (176×10)+(177×38)+(178×54)+(179×28)+(180×70)/100

Average atomic mass = 357.1amu

357.1amu is the atomic mass of Hafnium

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To fill the second shell of a nitrogen atom and achieve stability with 8 electrons in the outermost shell, three electrons would need to be added.

Nitrogen has an atomic number of 7, meaning it normally has 7 electrons distributed in two shells: 2 electrons in the first shell and 5 electrons in the second shell. However, to achieve stability with 8 electrons in the outermost shell, the second shell of the nitrogen atom needs a total of 8 electrons. Therefore, 3 more electrons are required to fill the second shell to its maximum capacity. By adding these 3 electrons to the existing 5 electrons in the second shell, the nitrogen atom would have a total of 8 electrons in its outermost shell, leading to a more stable electron arrangement.

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A radioactive decay is occurring by the emission of charged particles such alpha or beta to form a new stable atom with changes mass number and atomic number.

Heavy unstable radioactive elements undergo nuclear decay by which they form a stable isotope or new atom with changed atomic number. There are two types of nuclear decays mainly. They are alpha decay and beta decay.

During alpha decay isotopes with higher mass number undergo alpha emission and forming a new species with mass number reduced by 4 units and atomic number reduced by 2 units.

In the case of beta- decay, electrons are emitted from the atom and then forming a new atom with atomic number increased by one unit. For an electron capture process, an electron is captured to the atom forming an element with atomic number reduced by one.

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The temperature when the gas has a volume of 100 mL will be approximately 28.6°C.


To solve this problem, we'll use Charles's Law, which states that the volume of a gas is directly proportional to its temperature when the pressure and the amount of gas are constant. The formula for Charles's Law is V1/T1 = V2/T2, where V1 and T1 represent the initial volume and temperature, and V2 and T2 represent the final volume and temperature.
Given: V1 = 147 mL, T1 = 42°C, V2 = 100 mL. Convert the Celsius temperatures to Kelvin: T1 = 42 + 273 = 315 K.
Now, we'll solve for T2:
(147 mL / 315 K) = (100 mL / T2)
T2 = (100 mL * 315 K) / 147 mL
T2 ≈ 214.3 K
Finally, convert back to Celsius: T2 = 214.3 - 273 ≈ 28.6°C.

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The ideal gas equations of state express most real gases at low pressure but do not yield rational results at higher pressures

An ideal gas is defined as a hypothetical gaseous material whose behavior is bold of ideal gas attractive and revolting forces and can be the Presence of electrons large in sulfur dioxide and hence greater van der Waals interplay. Due to greater intermolecular force, this gas has a high boiling point and essential high temperature to behave ideally. Hence sulfur dioxide act as the least ideal gas at low temperatures. It is also good to know that the ideal gas law takes that the gas molecules have negligible. Keeping that in mind, Xe is the largest of the bunch.

So we can conclude that an ideal gas is a theoretical gas controlled by many randomly moving point particles that are not subject to interparticle interactions.

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