if the attractive forces between the ions and water are stronger than the attraction between the ions in the crystal, an ionic compound dissolves in water.

Answer: 2.88 moles

Explanation: M = no of moles / volume of solution

The correct answer is; "The frozen metal was discovered through biased research practices."

Scientific research is based on standard practices and not on personal bias hence they should not have taken a decision based on the frozen metals. Bias prevents a researcher from taking an objective look at experimental observations before arriving at a conclusion.

The greatest pitfall that must be avoided when conducting a scientific study is bias.

A bias is introduced when there is a disparity between observation and interpretation of data in a scientific study.

In the case of this question, the researchers already wanted to establish the possibility of obtaining a carbonless fuel. Their minds were so clouded with this bias that they forgot to thoroughly investigate the pieces of frozen metal thereby arriving at a lobe-sided, unscientific conclusion. This makes their work, "bad" science.

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Answer:

it would be A The conditions of the experiment are not replicate able or repeatable.

Explanation:

A team of researchers is working on a project to make a new kind of carbonless fuel. During their experiment, there is an explosion that destroys the lab. While they are cleaning the debris, they discover three pieces of frozen metal. The researchers were excited to report that they had discovered a fuel that burns so clean it becomes cold. Other scientists attempt to make the carbonless fuel but are unsuccessful. Which statement best explains why this scenario represents "bad" science?

The conditions of the experiment are not replicable or repeatable.

The process of making clean fuel is known due to the explosion.

The frozen metal was discovered through biased research practices.

The result of clean fuel production, the frozen metal, is not observable.

1. The IUPAC name of N is nitrogen.

2. Nitrogen dioxide

3.The IUPAC name of O is oxygen

4.The IUPAC name of OH is hydroxyl.

The IUPAC name of ·0 is a radical. It is commonly found in organic chemistry and plays an important role in many reactions.

IUPAC names for the given compounds are:1.1. N: Nitrogen

The IUPAC name of N is nitrogen.

It is a non-metal and belongs to group 15 in the periodic table. It has an electronic configuration of 1s2 2s2 2p3.1.2. NO2: Nitrogen dioxide

Explanation: NO2 is a chemical compound that is formed by the combination of nitrogen and oxygen. It is a reddish-brown gas that has a pungent odor.

The IUPAC name of NO2 is nitrogen dioxide.1.3. O: Oxygen

Explanation: The IUPAC name of O is oxygen.

It is a non-metal and belongs to group 16 in the periodic table. It has an electronic configuration of 1s2 2s2 2p4.

X: UnknownExplanation: No IUPAC name can be given to an unknown compound as the structure and composition are not known.

Y: Hydroxyl Explanation: The IUPAC name of OH is hydroxyl.

It is a functional group that is composed of an oxygen atom and a hydrogen atom (-OH). It is commonly found in alcohols and phenols. ·0: RadicalExplanation: A radical is a molecule or an ion that contains an unpaired electron.

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Note: The complete question is given below

Provide the IUPAC names for the following compounds:

\(CH_3CH_2CH(CH_3)CH_2CH_2CH_2CH_3\)

C6H5CH(CH3)2

H2NCH2CH2CH2CH2CH2NH2

CH3CH2CH2CH2CH2OH

CH3CH2CH2CHOHCH3

Answer:

44

Explanation:

Answer:

1.  negative

2.  positive

3.  neutral

Explanation:

Ok so it looks like they are asking for the charge (positive, negative, or neutral) of each thing

So for 1, it would be negative, because it's pointing to an electron.  Electrons always have a negative charge.

So for 2, it would be positive, because it's pointing to a proton.  Protons always have a positive charge

So for 3, it would be neutral, because it's pointing to a neutron.  Neutrons always have a neutral charge.

Answer:

nil

Explanation:

i did already did it

The volume of hydrogen gas produced in the reaction of 73 grams of zinc and 73 grams of hydrochloric acid (under normal conditions) is approximately 22.4 liters.

To calculate the volume of hydrogen gas produced in the reaction of zinc and hydrochloric acid, we need to use the principles of stoichiometry and the ideal gas law.

First, let's write the balanced chemical equation for the reaction between zinc (Zn) and hydrochloric acid (HCl):

Zn + 2HCl →\(ZnCl_2\)+ H2

From the equation, we can see that one mole of zinc reacts with two moles of hydrochloric acid to produce one mole of hydrogen gas. To determine the number of moles of zinc and hydrochloric acid, we need to convert the given masses into moles.

The molar mass of zinc (Zn) is approximately 65.38 g/mol, so 73 grams of zinc is equal to:

73 g Zn * (1 mol Zn / 65.38 g Zn) ≈ 1.116 mol Zn

Similarly, the molar mass of hydrochloric acid (HCl) is approximately 36.46 g/mol, so 73 grams of HCl is equal to:

73 g HCl * (1 mol HCl / 36.46 g HCl) ≈ 2.002 mol HCl

According to the balanced equation, the reaction produces one mole of hydrogen gas for every two moles of hydrochloric acid. Therefore, since we have 2.002 moles of HCl, we expect to produce half that amount, or approximately 1.001 moles of hydrogen gas.

To calculate the volume of hydrogen gas, we can use the ideal gas law, which states:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature. In this case, we assume the reaction is conducted under normal conditions, which means a pressure of 1 atmosphere and a temperature of 273.15 Kelvin.

Rearranging the equation to solve for V, we have:

V = nRT / P

Substituting the values, we get:

V = (1.001 mol) * (0.0821 L·atm/(mol·K)) * (273.15 K) / (1 atm) ≈ 22.4 L

Therefore, the volume of hydrogen gas produced in the reaction is approximately 22.4 liters.

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Answer: Correct.

Explanation: Propene reacts with bromine and add two bromine atoms give the 1,2-dibromopropane. Two bromine atoms are added to the double bond carbon. Ethene was a non polar alkene. But propene is a polar molecule. This reaction is also an electrophilic addition reaction.

Diffusion and convection are two distinct processes that play a role in the dispersal of air pollution, but they differ in how they transport pollutants and their impact on dispersion.

Diffusion refers to the spontaneous movement of particles from an area of higher concentration to an area of lower concentration. It occurs due to random thermal motion of molecules. In the context of air pollution, diffusion allows pollutants to spread out gradually, dispersing them in various directions. However, diffusion alone is a relatively slow process, particularly for large-scale dispersion, and it may not be effective in rapidly distributing pollutants over long distances.

Convection, on the other hand, involves the transfer of heat energy through the movement of a fluid, such as air or water. In the atmosphere, convection occurs as warm air rises, creating upward currents and transporting pollutants vertically. As the air rises, it carries pollutants to higher altitudes, which can lead to their dispersion over larger areas. Convection is a more efficient process for the vertical transport and dispersion of pollutants compared to diffusion.

The impact of diffusion and convection on the dispersal of air pollution can vary. Diffusion primarily affects local dispersion, allowing pollutants to spread out in the immediate vicinity of emission sources. It is more significant in areas with minimal air movement. Convection, on the other hand, can facilitate the long-range transport of pollutants, particularly when large-scale weather systems are involved. Convection can carry pollutants over greater distances and contribute to regional or even global dispersion, depending on weather patterns.

In summary, diffusion and convection are both involved in the dispersal of air pollution, but they differ in the mechanisms of transport and the scale of dispersion. Diffusion leads to gradual spreading of pollutants locally, while convection enables vertical transport and dispersion over larger areas, including long-range transport depending on weather conditions. Understanding the interplay between these processes is crucial for assessing the extent and impact of air pollution.

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Based on the balance given, the statements that are true if you were to use this balance to measure the mass of a sample are option B and G.

A scale or balance is an instrument which is used to measure weight or mass of an object. These are also known as mass scales, weight scales, mass balances, and weight balances. The traditional scale consists of two plates or bowls suspended at equal distances from a fulcrum. There are several varieties of balances, with various limits on their accuracy. Two common kinds of balances are the centigram (0.00) and the analytical (0.0000). The uncertainty of a centigram balance is one hundredth of a gram (± 0.01 g). A mass that falls between 1 gram and 9 grams measured on this balance will always have 3 significant figures as it will read 1.00 or 9.00 on the scale.

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Explanation: Crystallization or crystallization is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal.

HOPE THIS HELPS!!!! :)

Answer:

cm

Explanation:

for short measurements

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

From the question we have

\(density = \frac{18}{3} \\ \)

We have the final answer as

Hope this helps you

Answer:

In He2 molecule,

Atomic orbitals available for making Molecular Orbitals are 1s from each Helium. And total number of electrons available are 4.

Molecular Orbitals thus formed are:€1s2€*1s2

It means 2 electrons are in bonding molecular orbitals and 2 are in antibonding molecular orbitals .

Bond Order =Electrons in bonding molecular orbitals - electrons in antibonding molecular orbitals /2

Bond Order =Nb-Na/2

Bond Order =2-2/2=0

Since the bond order is zero so that He2 molecule does not exist.

Explanation:

One can change the concentration of a solution while keeping the number of moles of solute the same by reducing the volume of solvent in the solution.

The molarity of a solution is the number of moles of solute per unit volume of solvent.

The number of moles of solute in a unit volume of solvent can be kept constant while the volume of the solvent reduced in order to increase the concentration of a solution.

For example, a solution with 2 moles of solute in 1 L of solvent will have a molarity of 2 M.

If the amount of solvent is reduced to 0.5 L, the molarity will become:

                                 2/0.5 = 4 M

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Fossil fuels are essential part of the power generation in the world. They are easily combustible and more reliable and cheaper. However, the burning of fossil fuels releases toxic gases  to the environment.

Fossil fuels are fuel generated from the decomposition materials. Petroleum, coal, natural gas  etc. are fossil fuels which are excavating from the earth.

Fossil fuels are non-renewable sources of energy. Hence, as the existing fossil sources are exhausted no more fossil fuel can be made. It is cheaper, reliable and easy to use.

However, the toxic hydrocarbon gases released from the burning of fossil fuels make the environment polluted. Therefore, overuse of fossil fuel definitely rise the atmospheric pollution.

Its use over the next 50 years, will increase the global warming and more of it will be exhausted.

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Your materials based on the types of bonds they have the general properties are when different type of bond are formed is directly responsible for properties of material

Chemical bonds are the electrical forces of attraction that hold atoms or ions together to form molecules and different types of chemical bonds and their varying intensity are directly responsible for some of the physical properties of minerals such as hardness, melting and boiling points, solubility, and conductivity and when different bond are attach to the material then properties are different

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Answer: 80.14

Explanation:

The first step to solve this problem is to calculate the amount of oxygen gas needed to react with the given amount of acetylene gas. According to the balanced equation of the combustion reaction, 5 moles of O2 are needed for every 2 moles of C2H2:

2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(g)

Thus, we can use the following proportion to calculate the amount of oxygen gas needed:

5 mol O2 / 2 mol C2H2 = x mol O2 / y mol C2H2

where x and y are the numbers of moles of oxygen and acetylene gases, respectively, needed to fill each tank.

To calculate the pressure needed to fill the acetylene tank, we can use the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature. Assuming that the temperature and volume are constant for both tanks, we can write:

P1 / P2 = n1 / n2

where P1 and P2 are the pressures in the oxygen and acetylene tanks, respectively, and n1 and n2 are the number of moles of each gas.

Now, we can combine these two equations to solve for P2, the pressure in the acetylene tank:

5 / 2 = x / y

y = 2x / 5

P1 / P2 = n1 / n2 = (5 mol / 4.50 L) / (2x / 6.50 L)

P2 = P1 * (2x / 5) * (4.50 L / 6.50 L)

P2 = 145 atm * (2/5) * (4.50/6.50)

P2 = 80.14 atm

Therefore, the acetylene tank should be filled to a pressure of 80.14 atm to ensure that both tanks run out of gas at the same time.

The element belongs to group 1A of the periodic table because it has only one electron in its 3s orbital.

Based on the electronic configuration, the element is a reducing agent.

Electronegativity is the ability of an atom of an element to attract electrons to itself.

A neutral atom that has high electronegativity will gain electrons to form an anion during ionic bond formation.

The electronic configuration of an element is the arrangement of the electrons found in the atom of the element in shells or orbitals around the nucleus.

Electronic configuration arranges the electrons in the atom of the element in increasing order of energy level.

Considering the given element with the electronic configuration shown below:

electronic configuration of element = 1s²2s²2p⁶3s¹

The element belongs to group 1A of the periodic table because it has only one electron in its 3s orbital, the valence orbital.

Based on the electronic configuration, the element is a good reducing agent.

Electronegativity is the ability of an atom of an element to attract electrons to itself.

A neutral atom that has high electronegativity will gain electrons to form a negative ion or anion  during ionic bond formation.

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Answer:

D

Explanation:

Miss Girl. Snow isn't in Nevada-

Answer:

Human cells are eukaryotic which means they are more complicated, bacteria cells are prokaryotic which means they are simpler

Explanation:

Hope this helps

The correct answer for emperical and molecular formula = C5H14N2 .

3.23 g x (12.011 / 44.0098) = 0.8815 g carbon

1.865 g x (2.016 / 18.0152) = 0.2087 g Hydrogen

1.58 g x (28.014 / 108.009) = 0.4098 g Nitrogen

1.50 g minus (0.8815 + 0.2087 + 0.4098) = 0.

Convert each element's mass to moles.

0.8815 g/12.011 g/mol = 0.0734 mol carbon

0.2087 g 1.008 g/mol = 0.207 mol Hydrogen

0.4098 g 14.007 g/mol = 0.02926 mol Nitrogen

Step three is to calculate the ratio of molar amounts expressed in the smallest, whole numbers.

0.0734 mol 0.02926 mol = 2.51 carbon

7.07 mol hydrogen = 0.207 mol 0.02926 mol

Nitrogen: 0.02926 mol = 1 Nitrogen: 0.02926 mol = 1

Doubling each value yields C = 5, H = 14.14, and N = 2, resulting in the empirical formula C5H14N2. 

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Radiation is produced when unstable or radioactive atoms through the process of becoming stable. We refer to this process as radioactive decay over time. Two protons and two neutrons are lost from the nucleus as a result of alpha decay.

An unstable nucleus releases radiation and changes into the nucleus of one or more additional elements during a nuclear decay process, also known as radioactive decay.

The ensuing offspring nuclei are less energetic and heavier than the parent nucleus that underwent decay, making them more stable.

For example, by producing an alpha particle, the unstable uranium-238 nucleus naturally decays into a thorium-234 nucleus. The most prevalent radioactive decay processes are decay, emission, decay, positron emission, and electron capture.

Thus, Radiation is produced when unstable or radioactive atoms through the process of becoming stable.

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Word equation: sulfuric acid + sulfur -> sulfur dioxide + water

Chemical equation: H2SO4 + S -> SO2 + H2O

Answer:

Word equation: Sulfuric acid + Sulfur → Sulfur Dioxide + Water

Chemical equation: H2SO4 + S → SO2 + H2O

Explanation:

Answer:

0.51

Explanation:

Given the Nernst equation;

E= E° - 0.0592/n logQ

E= 355 mV or 0.355 V

E° = 0.34 - 0= 0.34 V

n= 2(two electrons were transferred in the process)

Equation of the reaction;

H2(g) + Cu^2+(aq) -----> 2H^+(aq) + Cu(s)

Substituting values;

0.355 = 0.34 - 0.0592/2 log([H^+]/1)

0.355 - 0.34 = - 0.0296 log [H^+]

0.015/-0.0296 = log [H^+]

Antilog (-0.5068) = [H^+]

[H^+] = 0.311 M

pH = -log[H^+]

pH= - log(0.311 M)

pH = 0.51

The potential difference between the half cell of the electrochemical cell is called cell potential. The pH of the solution at 355 mV will be 0.51.

An electrochemical cell generates electricity from the redox chemical reactions occurring inside the cell.

The balanced chemical reaction is shown as,

\(\rm H_{2}(g) + Cu^{2+}(aq) \rightarrow 2H^{+}(aq) + Cu(s)\)

Using the Nernst equation:

\(\rm E= E^{\circ} - \dfrac{0.0592}{n }logQ\)

Given,

E = 0.355 V

E° = 0.34 V

n = 2

Substituting values in the above equation:

\(\begin{aligned} 0.355 &= 0.34 - \dfrac{0.0592}{2} \;\rm log(\dfrac{[H^{+}]}{1})\\\\0.355 - 0.34 &= - 0.0296 \rm \; log [H^{+}]\\\\\dfrac{0.015}{-0.0296} &= \rm \; log [H^{+}]\end{aligned}\)

Solving further,

\(\begin{aligned} \rm Antilog (-0.5068)& = \rm [H^{+}]\\\\\rm [H^{+}] &= 0.311 \;\rm M \end{aligned}\)

The pH of the solution is calculated as:

\(\begin{aligned} \rm pH &= \rm -log[H^{+}]\\\\&= \rm - log(0.311\; M)\\\\&= 0.51\end{aligned}\)

Therefore, 0.51 is the pH of the solution.

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Therefore, at 1.82 atm and 22°C, 218 mol of H2 will fill a volume of 888 L.

1 mole of any gas will take up 22.4 L of space at Standard Temperature and Pressure (STP). The quantity may be determined using the Ideal Gas Law and a balanced chemical equation.

The ideal gas law can be used to resolve this issue:

PV = nRT

The temperature must first be converted to Kelvin by adding 273.15:

T =22°C+273.15

= 295.15 K

After that, we may enter the following values:

P = 1.82 atm

n = 218 mol

R = 0.0821 L·atm/mol·K (gas constant)

So the equation becomes:

V = nRT / P

V = (218 mol)(0.0821 L·atm/mol·K)(295.15 K) / (1.82 atm)

V = 888 L.

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Answer:

6.5

Explanation:

half of 5 is 2.5, half of 8 is 4. 2.5+4=6.5

:)