If 1.0 mole of ammonium nitrite, NH4NO2, was dissolved in 1.0 liter of water, the pH of the solution would be ____.
For NH3: Kb = 1.8 × 10−5 For HNO2: Ka = 4.5 × 10−4
a. greater than 7
b. impossible to predict
c. equal to 7
d. less than 7
e. close to 14

Answer: The answers are A, B, and E.

Explanation: Got it wrong on Edge and that's what it showed.

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the correct option are option A,B,D,E.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound.  Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.

The compound that is ionic in nature can be dissociated very easily in water. Since ionic compounds are polar in nature, they readily dissolve in water. among given option Ba(NO\(_3\))\(_2\), CaSO\(_4\), H\(_2\)CO\(_3\) and Mg\(_3\)(PO\(_4\))\(_2\) will dissociate in water.

Therefore, the correct option are option A,B,D,E.

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Answer:

Probably because there is more helium to burn. After billions of years there's only gonna be helium so no more of that firey energy.

I think....

Answer: The rock and soil had gravitational potential energy at the edge of the road, overlooking the river. The rain added mass and caused the rock and soil to loosen. The rock and soil gained kinetic energy as it slid down into the river.

Explanation:

Answer:

The rock and soil had gravitational potential energy at the edge of the road, overlooking the river. The rain added mass and caused the rock and soil to loosen. The rock and soil gained kinetic energy as it slid down into the river

Explanation:

Answer:

The atom that loses the electrons becomes a positively charged ion, while the one that gains them becomes a negatively charged ion

Answer:

The sun, like all stars, is able to create energy because it is essentially a massive fusion reaction. Technically known as nuclear fusion, this process releases an incredible amount of energy in the form of light and heat.

Types of energy produced: Stars produce energy from nuclear reactions, primarily the fusion of hydrogen to form helium.

Explanation:

hope this helped :D

Answer:

Five significant figures

Explanation:

You have to change the number to standard form

340500 = 3.405×10**5

** means raise to power

10**5

Where five represents the number of significant figures.

Answer:

4!

Explanation:

the exact value of the expression \(\log _{10} 0.0001\) is -4.

The expression given is \(\log _{10} 0.0001\).
We know that \(\log _{10} 0.0001\) is the power to which 10 must be raised to get 0.0001.
We can write 0.0001 as 1/10,000 or in exponential form, 10^-4.
Therefore, \(\log _{10} 0.0001 = \log _{10} 10^{-4}\).
Using the property of logarithms, \(\log _{a}a^{b}=b\), we get
\(\log _{10} 10^{-4} = -4\).
So, the exact value of the expression \(\log _{10} 0.0001\) is -4.
the exact value of the given expression is -
Expression: \(\log _{10} 0.0001\)
Recall that the logarithm is the inverse of exponentiation. In this case, we want to find the exponent to which 10 must be raised to obtain 0.0001.
Since 0.0001 = 10^(-4), the expression simplifies as follows:
\(\log _{10} 0.0001 = \log _{10} 10^{-4}\)
By the property of logarithms, the exponent can be directly extracted when the base of the logarithm matches the base of the exponent:
\(\log _{10} 10^{-4} = -4\)
So the exact value of the expression is -4.

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The molecular formula of the compound, given that it contains 40 percent carbon, 6.7 percent hydrogen, and 53.3 percent oxygen is C₆H₁₂O₆

To obtain the molecular formula, we shall begin by obtaining the empirical formula. details below:

Divide by their molar mass

C = 40 / 12 = 3.33

H = 6.7 / 1 = 6.7

O = 53.3 / 16 = 3.33

Divide by the smallest

C = 3.33 / 3.33 = 1

H = 6.7 / 3.33 = 2

O = 3.33 / 3.33 = 1

Thus, the empirical formula of the compound is CH₂O

Haven obtain the empirical formula, we shall determine the molecular formula of compound. Details below:

Molecular formula = empirical × n

Molecular formula = mass number

Thus,

Empirical formula = molar mass

[CH₂O]n = 180

Find the value of n, we obtain:

[12 + (2×1) + 16]n = 180

30n = 180

Divide both sides by 30

n = 180 / 30

n = 6

Molecular formula = empirical × n

Molecular formula = [CH₂O]n

Molecular formula = [CH₂O]₆

Molecular formula = C₆H₁₂O₆

Therefore, the molecular formula is C₆H₁₂O₆

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To prepare 25.00 mL of solution that is 0.60 M in isopropanol and 1.00 M in HCl, you will need to add 18.98 mL of isopropanol. When the concentration of isopropanol is halved in a second-order reaction, the rate will decrease to a quarter of the original rate.

To determine the volume of isopropanol needed, first calculate the moles of isopropanol required for the solution: moles = Molarity × Volume = 0.60 mol/L × 0.025 L = 0.015 mol. Next, calculate the mass of isopropanol needed: mass = moles × molar mass = 0.015 mol × 60.10 g/mol = 0.902 g. Now, use the density of isopropanol to find the volume: volume = mass ÷ density = 0.902 g ÷ 0.785 g/mL = 18.98 mL.

Regarding the reaction rate, if the reaction is second-order with respect to isopropanol concentration, the rate equation will be Rate = k[Isopropanol]^2. When the concentration of isopropanol is halved, the rate equation becomes Rate = k(0.5[Isopropanol])^2. Thus, the rate is reduced to (0.5)^2 = 0.25 times the original rate, or a quarter of the original rate.

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Answer:

A charge of +2

Explanation:

\(Ca {}^{2 + } \)

To make 150 mL of 0.5 M sucrose, you need to add 75 grams of sucrose.

This is calculated by multiplying the volume (150 mL) by the molarity (0.5) and then multiplying that by the molecular weight of sucrose (342.3 g/mol). The equation looks like this:

150 mL × 0.5 M × 342.3 g/mol = 75 g sucrose

This is calculated by multiplying the volume of sucrose (150 mL) by the concentration (0.5 M) to get the total moles of sucrose needed, which is then multiplied by the molecular weight of sucrose (342 g/mol) to get the total grams of sucrose needed.

Therefore, 75 grams of sucrose is required to make 150 mL of 0.5 M sucrose.

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Answer:

149.94J

Explanation:

According to specific heat capacity, 149.94 joules are needed to increase the temperature of 15.0 g of Fe from 20.0°C to 40.0°C .

Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.

It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.

It is given by the formula ,

Q=mcΔT

Substitution in above formula gives Q=15×0.4998×20=149.94 J.

Thus 149.94 Joules  are needed to increase the temperature of 15.0 g of Fe from 20.0°C to 40.0°C .

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Answer:

What do you want answered?

Explanation:

Answer:

Low pressure

Explanation:

Hurricanes are powerhouse weather events that suck heat from tropical waters to fuel their fury. These violent storms form over the ocean, often beginning as a tropical wave a low pressure area that moves through the moisture-rich tropics, possibly enhancing shower and thunderstorm activity.

Answer:

its absorbed by heat from consumers

Answer:

I would say a physical characteristic is about what a person looks like, whereas a personal characteristic is how they act, and what theor personality is like.

Explanation:

Physical means something you can see or touch, like hair or skin. Personal is more often used for how someone's personality is, and you can't touch someone's personality.

Answer:

C. Transpiration, evaporation, and sublimation.

Explanation:

thank you to the internet.

The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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274.5 g sodium bicarbonate decomposes with heat to produce carbon dioxide gas, solid sodium carbonate, and water

theoretical yield of water is 117.7 g.

the percent yield of water is 16.14%.

The balanced chemical equation for the decomposition of sodium bicarbonate is:

2 NaHCO₃(s) → Na₂CO₃(s) + CO₂⁽g) + H₂O(g)

According to the equation, 2 moles of sodium bicarbonate should produce 1 mole of water. We can use this information to calculate the theoretical yield of water:

Molar mass of NaHCO₃ = 84.0 g/mol

Molar mass of H₂O = 18.0 g/mol

The number of moles of NaHCO₃ present in 274.5 g can be calculated as:

n(NaHCO₃) = mass ÷ molar mass

n(NaHCO₃) = 274.5 g ÷ 84.0 g/mol

n(NaHCO₃) = 3.27 mol

the theoretical yield of water is:

n(H₂O) = 2 × n(NaHCO₃)

n(H₂O) = 2 × 3.27 mol

n(H2O) = 6.54 mol

mass(H₂O) = n(H₂O) × molar mass

mass(H₂O) = 6.54 mol × 18.0 g/mol

mass(H₂O) = 117.7 g

The percent yield can be calculated as follows:

percent yield = actual yield ÷ theoretical yield × 100%

In this case, the actual yield of water is 19.0 g. Therefore, the percent yield is:

percent yield = 19.0 g ÷ 117.7 g × 100%

percent yield = 16.14%

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In the beta oxidation pathway, the product of the enzyme acyl-coa synthetase when the starting fatty acid contains n carbons is, an acyl-CoA molecule.

The word "β-oxidation" refers to an oxidation that occurs in the fatty acid's -carbon when two carbon atoms are removed from the carboxyl end of the molecule at a time. By means of a process known as  beta oxidation, fatty acids with an even or odd number of carbon atoms as well as unsaturated fatty acids are oxidised.

The acyl-CoA molecule contains n-carbon fatty acid, which is covalently bound to Coenzyme A (CoA) through a thioester bond. The starting fatty acid is a saturated fatty acid containing n carbons, where n is an even number.

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Using drop-down menu , IUPAC name is as follows :

cis-3-decene: (Z)-3-decene  , cis-3-nonenetriene: (Z,Z,Z)-3-nonenetriene

trans-3-decene: (E)-3-decene , trans-3-nonene: (E)-3-nonene

cis-3-decene is an alkene with a double bond between carbon atoms 3 and 4, and both alkyl groups (attached to the double bond) on the same side of the double bond. Therefore, its IUPAC name is (Z)-3-decene.

cis-3-nonenetriene is a triene with three double bonds. The double bonds are between carbon atoms 3 and 4, 6 and 7, and 9 and 10. Since all the alkyl groups attached to the double bonds are on the same side of the double bonds, the compound is named as (Z,Z,Z)-3-nonenetriene. trans-3-decene is an alkene with a double bond between carbon atoms 3 and 4, and both alkyl groups (attached to the double bond) on opposite sides of the double bond. Therefore, its IUPAC name is (E)-3-decene. trans-3-nonene is an alkene with a double bond between carbon atoms 3 and 4, and both alkyl groups (attached to the double bond) on opposite sides of the double bond. Therefore, its IUPAC name is (E)-3-nonene.

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5.41 atm pressure is exerted by 1.55 mol of hydrogen gas in a 7.19 L container at 29°C.

The Ideal Gas Law states that under the same temperature, pressure and volume all gases include the same number of molecules.

The Ideal Gas law does not apply when the temperature and pressure are near the point of transmuting into a liquid or solid.

Given:

Number of moles (n) = 1.55 mol

Volume (V) = 7.19litre

Temperature (T) = 29°C = 29 + 273 = 302 Kelvin

Pressure = ?

R = Universal gas constant = 0.0831

According to ideal gas law,

PV = n RT

By substituting given values in above equation and we get,

P = nRT/ V

P = 1.55 × 0.0831 × 302 ÷ 7.19

P = 5.41 atm

Thus, the pressure exerted is 5.41 atm.

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Answer:

second one... maybe

hope it helps :-)

Molality of a solution is defined as the number of moles of solute per kilogram of solvent. The formula for molality is given by the following equation:molality (m) = moles of solute / mass of solvent (in kg)In order to calculate the molality of a 12 percent urea solution, we need to first determine the mass of urea present in the solution.

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The charge qₑₙ contained within the Gaussian cylinder is equal to the net charge enclosed by the cylinder.

In the context of Gauss's Law in electromagnetism, a Gaussian cylinder is an imaginary surface used to apply the law. Gauss's Law states that the electric flux through a closed surface is proportional to the net charge enclosed by that surface.

The charge qₑₙ enclosed within the Gaussian cylinder can be determined by calculating the integral of the electric field over the surface of the cylinder. This integral represents the electric flux passing through the surface, which is proportional to the net charge enclosed.

To find the value of qₑₙ, you need to evaluate the integral of the electric field over the surface of the Gaussian cylinder. The result will be the net charge enclosed by the cylinder.

By using Gauss's Law and properly considering the symmetry and characteristics of the electric field, you can determine the charge qₑₙ enclosed within the Gaussian cylinder for a given distribution of charges.

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Answer:lmk

Explanation:

The statement is true about isotopes  is : Isotopes are the same element with different atomic masses. The statement is true about isotopes.

Isotopes are different forms of the same element that have the same number of protons in their nucleus but different numbers of neutrons.

This means they have the same atomic number but a different mass number. To find the isotopes of an element, look for the number of protons in the element's nucleus.

This number, also called the atomic number, is what identifies the element. The number of neutrons, on the other hand, can vary for different isotopes of the same element.

This is what gives each isotope a different mass number.To write an isotope, it is written in the form of element name-mass number.

For example, the isotopes of Carbon (C) are C-12, C-13, and C-14, which have 6, 7, and 8 neutrons, respectively. Isotopes are formed by natural processes such as radioactive decay or nuclear reactions.

They are also used in various applications like medical imaging, radiocarbon dating, and nuclear power generation.

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Answer:

The mole allows scientists to calculate the number of elementary entities (usually atoms or molecules ) in a certain mass of a given substance. Avogadro's number is an absolute number: there are 6.022×1023 elementary entities in 1 mole. This can also be written as 6.022×1023 mol-1.

Explanation:

\(KP = (PNH3)^2/(PN2)(PH2)^3\)To get this expression, we first need to write the balanced chemical equation for the reaction:

\(N2(g) + 3H2(g) ⇌ 2NH3(g)\)
The KP expression is then obtained by taking the product of the concentrations of the products raised to their stoichiometric coefficients, divided by the product of the concentrations of the reactants raised to their stoichiometric coefficients. We use partial pressures here since the reaction involves gases:
\(KP = (PNH3)^2/(PN2)(PH2)^3\)
Note that we have to raise \(PH2\) to the power of 3 since there are 3 moles of \(H2\) in the balanced chemical equation.

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The number of different uncharged (neutral) stable hydrogen atoms which one can build is two and the similarity is that they both have a single proton while the difference is that one has a neutron while the other has zero neutron.

This is referred to as the smallest particle of an element which can exist and has subatomic particles such as proton and neutron.

The different uncharged (neutral) stable hydrogen atoms which one can build include:

From this we can infer that they both have one proton and electron and one has no neutron while the other has just one.

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