The ionic compound containing ammonium ion and carbonate ion gives off the odor of ammonia, a property put to use in smelling salts for reviving someone who has fainted.
a. True
b. False

Answer:

its A reduces stress :)))

Explanation:

According to Le Chatelier’s principle, a system in chemical equilibrium responds to stress by shifting the equilibrium in a direction that reduces the stress.

Le Chatelier’s principle states that when a chemical equilibrium become imbalance by any change such as change in concentration, temperature, pressure etc. the system will reduces this stress by creating a new equilibrium  state.

By this principle, when temperature increases for an endothermic system, forward reaction will takes place more since the temperature is absorbed there.

Similarly, when the concentration of any reactant increases, the reaction will turn to that direction in  which that reactant is consumed more. If any loss the volume, then the equilibrium will shifts to that direction in which the that substance is produced.

Hence, the system will somehow manage the imbalance by reducing the stress occurred.

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Factors that can affect the rate of reaction of the baking soda and the vinegar are Temperature, Concentration and surface area.

1. Temperature: The reaction between baking soda and vinegar is an example of an acid-base reaction. When an acid and a base react, they neutralize each other and create a salt and water. In this case, the baking soda is the base and the vinegar is the acid. Generally speaking, increasing the temperature of a reaction will increase the rate of reaction because it increases the energy of the molecules involved. So, if you pour hot vinegar over baking soda, the reaction will happen more quickly than if you pour cold vinegar over it.
2. Concentration: The concentration of the reactants can also affect the rate of reaction. In this case, the concentration of the vinegar is the important factor. If you dilute the vinegar with water, the reaction will happen more slowly than if you use undiluted vinegar. This is because there are fewer acid molecules to react with the baking soda.
3. Surface area: The surface area of the reactants can also affect the rate of reaction. In this case, the surface area of the baking soda is the important factor. If you pour baking soda in clumps down the drain, it will react more slowly than if you sprinkle it evenly across the surface of the drain. This is because there is less contact between the baking soda and the vinegar when it is in clumps.
In conclusion, the rate of reaction between baking soda and vinegar can be affected by several factors, including temperature, concentration, and surface area. By understanding these factors, you can make the most of this simple and effective household cleaner.

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Rock properties such as cleavage, fractures, and bedding planes reduce the mechanical strength of rock and may allow for downhill slippage.

The various characteristics of rocks that are of interest and importance to geologists and other professionals who work with rocks and rock materials are known as rock properties. In addition to the classification and physical properties of rocks, the mechanical, hydrologic, thermal, and electrical properties of rocks are also important.

The physical characteristics of rocks include color, texture, and structure. Rock texture, which refers to the size and arrangement of mineral crystals, is used to distinguish rocks. Cleavage, fractures, and bedding planes are all structural features of rocks that have a significant impact on their mechanical strength, and as a result, their stability.

Fractures, cleavage, and bedding planes can significantly lower the strength of rocks. Fractures, which are cracks in the rock's surface, are the most frequent structural feature. Bedding planes, which are layers of rock that have distinct properties, and cleavage planes, which are parallel fractures that give the rock a tendency to break along specific planes, are examples of other structural features. This lack of mechanical strength allows rocks to slide downhill or collapse quickly.

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Answer:

c. protons and neutrons are found in the nucleus

d. protons and neutrons have approximately the same mass

Explanation:

There are three fundamental particles within an atom which are the protons, neutrons and electrons.

The protons are the positively charged particles within an atom

Neutrons do not carry any charges

Electrons are the negatively charged particles.

it is b forces hold matter together

A force is a push or pull on an object. Forces usually cannot be seen but their effects can. Nothing moves, changes speed, stops or changes direction without force. Heavier objects need more force to get them to move or change direction.

Answer:

Yup, it's B. Forces hold matter together.

Explanation:

The other user is correct. :)

Answer:

lbm/ft³ or psi/ft

Explanation:

The description in the question shows the density to measured is that of gases (upper atmosphere). The density of a gas can be described as the mass of the gas divided by the volume of the gas at a certain temperature and pressure. It's unit can be represented as lbm/ft³ or psi/ft.

NOTE:

"lbm" means "lean body mass" which is a unit for mass or weight and can be described as the pound mass

"psi" means "pound per square inch"; is also a unit for mass or weight

Answer:

Ca2+ I'm not sure hahahahhahah

Answer:

Ca

hope it is helpful..

Answer:

Genetic engineering

Explanation:

Human activity can have a significant impact on the balance of acids and bases in the environment are Acid rain, Ocean acidification, and Agricultural practices.

Acid rain is caused by the release of sulfur dioxide (SO2) and nitrogen oxides (NOx) into the atmosphere from the burning of fossil fuels. These gases react with water vapor in the atmosphere to form acids, which can then fall to the earth as rain, snow, or fog. Acid rain can have a detrimental effect on the environment, including the acidification of lakes and streams, the damaging of forests and crops, and the erosion of buildings and monuments.

The burning of fossil fuels also releases carbon dioxide (CO2) into the atmosphere, which can be absorbed by the oceans. This can lead to a decrease in the pH of the oceans, which can have a negative impact on marine life, including the bleaching of coral reefs and the dissolution of the shells of shellfish.

The use of fertilizers in agriculture can lead to the release of nitrous oxide (N2O) into the atmosphere, which can contribute to the formation of acid rain. Additionally, the use of pesticides and herbicides can lead to the release of chemicals into the environment, which can also affect the balance of acids and bases.

Overall, human activity can have a significant impact on the balance of acids and bases in the environment, and it is important to take steps to reduce our impact on the environment in order to maintain a healthy balance of acids and bases.

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An endothermic reaction is one that absorbs heat from its surroundings, resulting in an increase in the system's internal energy.

Therefore, the enthalpy change associated with an endothermic reaction is positive. The energy required to break the bonds in the reactants is greater than the energy released when new bonds are formed in the products, resulting in a net absorption of energy.

The enthalpy change is a measure of the heat energy released or absorbed during a chemical reaction, and it is often used to determine whether a reaction is exothermic or endothermic.

In the case of an endothermic reaction, the products have more internal energy than the reactants, and the enthalpy change is positive.

Some examples of endothermic reactions include melting ice, evaporating water, and photosynthesis. In all of these reactions, heat is absorbed from the surroundings, resulting in a positive enthalpy change.

Understanding the enthalpy change associated with a reaction is important in fields such as thermodynamics, chemical engineering, and materials science.

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Magnesium ( Mg+² ) has a full outer shell .

K and L shells of an atom are full , then it will have a total of 2 + 8 = 10 electrons in it . We know that magnesium has 12 electrons in it . Magnesium having 2 free electrons.

The concentration of bicarbonate ions decreases during metabolic acidosis due to the build-up of fixed acids.

Metabolic acidosis occurs when there is an imbalance between the production and excretion of fixed acids. This leads to an excess of fixed acids in the body, such as lactic acid and ketoacids. The excess fixed acids react with bicarbonate ions (\(HCO_{3}^{-}\)) to form carbonic acid (\(H_{2}CO_{3}\)). Carbonic acid then dissociates into water (\(H_{2}O\)) and carbon dioxide (\(CO_{2}\)), which is exhaled. As bicarbonate ions are used up in this process, their concentration decreases in the body.

Thus, bicarbonate ions combine with hydrogen ions to form carbonic acid, which then dissociates into water and carbon dioxide. When fixed acids accumulate in the body, they compete with bicarbonate ions for hydrogen ions, leading to a decrease in bicarbonate concentration and ultimately causing acidosis.

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Increasing the temperature will shift the equilibrium of the system in the direction that consumes heat.

In this case, the forward reaction is exothermic, meaning it releases heat, so increasing the temperature will favor the reverse reaction.

N₂(g) + 2H₂O(g) + heat ⇌ 2NO(g) + 2H₂(g)

By increasing the temperature, the system will respond by attempting to counteract the temperature increase. It does so by shifting the equilibrium to the left, which is the endothermic direction. This means that more reactants (N₂ and H₂O) will be favored, resulting in a decrease in the formation of products (NO and H₂).

Therefore, increasing the temperature will shift the equilibrium towards the left, favoring the formation of more reactants (N₂ and H₂O) and reducing the concentration of products (NO and H₂).

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Answer:

808.6

Explanation:

Answer:

Neuron Tissues

Explanation:

Answer:

The correct answer is - D C2H4.

Explanation:

Saturated hydrocarbons are hydrocarbons with single covalent C-C bonds. They are known as alkanes. The general formula for these hydrocarbons is  CnH2n+2

Unsaturated hydrocarbons the hydrocarbons with double or triple covalent C-C bonds. They are known as alkenes and alkynes respectively. The general formula for these hydrocarbons is  CnH2n and CnHn-2

For the given options:

Option D: C2H4, is the simplest alkene with a double bond so it is an unsaturated hydrocarbon.

Among the given options, asphalt has the least number of carbon atoms/molecules.

Asphalt is a dense and solid material composed mainly of large hydrocarbon molecules, primarily made up of carbon and hydrogen atoms. It contains a high proportion of carbon atoms but does not have as many individual molecules compared to the other options.

On the other hand, natural gas, gasoline, and jet fuel are all fuels derived from petroleum and consist of various hydrocarbon compounds. These fuels typically have a higher number of carbon atoms/molecules compared to asphalt.

Therefore, the correct answer is d. asphalt.

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Answer:

A. Wild life survey

Explanation:

The only answer that involved observing the wild life

Answer:

Br2Mg

Explanation:

Empirical formula is the simplest whole number ration of elements in a compound. Molecular formula is n times the empirical formula, where n is integers 1,2,... The empirical formula of the compound is MgBr\(_2\).

Empirical formula gives the proportion of the element that is present in a compound. It does not give information about the actual number or the arrangements of the atoms.

The relation between empirical formula and molecular formula can be given as

n= molecular formula÷ empirical formula

where n= 1,2,.....

Number of gram atoms in compound and divide by smallest Number of gram atoms in compound

mole = given mass/molar mass

32.0g×1 mole/79.9g = 0.401 mole Br

4.9g × 1mole/24.31= 0.20 mole Mg

The mole ratio between Br and Mg is 2:1

The empirical formula of the compound is MgBr\(_2\).

Therefore, the empirical formula of the compound is MgBr\(_2\).

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Answer:

mesosphere

Explanation:

Answer:

It is an ionic compound that consists of one calcium cation Ca2+ and two chlorine anions. The bivalent calcium metal forms an ionic bond with two chlorine atoms. The formation of cacl2 happens mainly by reacting limestone (CaCo3) with hydrochloric acid (HCl).

The pKw of water at this temprature would be 4, by using the formula for pKw

Although this dissociation is mild, water can split into its ions. The Kw is the dissociation constant, and the ionic product tends to remain constant.

Kw is the equilibrium constant that is connected to the molarity of water in an aqueous solution, so to speak. The concentration of a solute in a solution is indicated by its molarity or molar concentration, which is a volume that varies on temperature.

As a result, whereas the molarity in aqueous solutions is essentially constant, the pKw varies with temperature. When the temperature rises, the pKw decreases; when the temperature falls, the pKw rises.

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1. To determine the temperature at which the spontaneity of the reaction changes:

We can use the equation ΔGo = ΔHo - TΔSo, where ΔHo is the enthalpy change and ΔSo is the entropy change, to solve for the temperature.

ΔGo = -RT ln K, where K is the equilibrium constant, can also be used to calculate the temperature at which ΔGo = 0. Setting ΔGo equal to zero and solving for T gives:

\(T = ΔHo/ΔSo = -(-100000 J/mol)/(297 J/mol K) = 336.7 K = 353°C\)

2. To determine ΔGfo for MnO2(s):

\(4 Al(s) + 3 O2(g) = > 2 Al2O3(s) ΔGo = -3,3524 Al(s) + 3 MnO2(s) = > 3 Mn(s) + 2 Al2O3(s) ΔGo = -1,7943 MnO2(s) + 12 Al(s) + 9 O2(g) = > 6 Al2O3(s) + 3 Mn(s)ΔGo = (-3,352) + (-1,794) = -5,146 kJ/molΔGfo(MnO2(s)) = ΔGfo(Mn(s)) + 2ΔGfo(Al2O3(s)) - 3ΔGfo(Al(s)) - (1/3)ΔGoΔGfo(MnO2(s)) = (-0 kJ/mol) + 2(-1,675 kJ/mol) - 3(0 kJ/mol) - (1/3)(-5,146 kJ/mol) = -519.7 kJ/mol.\)

Therefore, ΔGfo for MnO2(s) is approximately -520 kJ/mol.

3. To calculate ln K for the reaction at 270 K:

\(ln K = ΔGo/(-RT)ln K = (-44,000 J/mol)/(-8.314 J/mol K * 270 K) = 8.4\)

Therefore, ln K at 270 K is approximately 8.4.

4. To calculate ΔGo for the reaction at 310 K:

Use the equation ΔGo = -RTln(Kp), where R = 8.314 J/mol K, T = 310 K, and Kp = 6.8 x 10^18.

Convert Kp from atm to Pa using the conversion factor 1 atm = 101325 Pa.

\(ΔGo = -8.314 J/mol K * 310 K * ln(6.8 x 10^18 * 101325^2) / 1000 J/kJΔGo = -496 kJ\)

5. To calculate ΔG for the reaction at 298 K:

Use the equation ΔG = ΔGo + RTln(Q), where R = 8.314 J/mol K, T = 298 K, and Q is the reaction quotient calculated from the given partial pressures.

Calculate Q using the equation \(Q = (P(NH3))^2 / (P(N2) * P(H2)^3)\), where P is the partial pressure in atm.

Substitute the values and solve for ΔG in kJ using proper units:

\(ΔG = -32.90 kJ + 8.314 J/mol K * 298 K * ln((63/1)^2 / (8.553 * 8.881^3)) / 1000 J/kJΔG = -146.5 kJ\)

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The two ways in which humans have negatively affected groundwater are Fertilizers and pesticides.

Fertilizers were chemical substances that are applied to crops in order to boost their yield.

Pesticides are chemicals that are being used to keep pests at bay. Herbicides, insecticides, nematicides, and molluscicides are examples.

Fertilizers and pesticides applied to the land, manure from livestock as well as other animals, landfills, mining operations, even unintended releases such as chemical spills or storage tank leaks are all factors that affect groundwater quality.

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Answer:

Complete combustion of 0.1mol of monocarboxylic acid requires V litres of O2 at dtc. and the reaction produces 0.3mol of CO2 and 0.2mol of H2O.

What is the value of V?

Explanation:

The balanced chemical equation of the reaction is

\(HCOOH+O_2 -> 2CO_2+2H_2O\\\)

1mol. of acid reacts with 1mol of \(O_2\) and produce 2mol. of CO2 and 2mol. of H2O.

Given,

0.1mol of acid requires how many litres of oxygen at STP?

0.1mol of acid requires 0.1mol of oxygen.

Since, 1mol of oxygen at STP occupies 22.4L of volume.

Hence, the volume occupied by 0.1mol of oxygen is -- 2.24L

Answer is:

The value of V is 2.24L.

Answer:

I believe wood wood melt it faster. Why, because of how compact it is. It would be warmer. Metal would be a cooler temperature.

Explanation:

Answer:

0.086

Explanation:

got it on acellus

The mass of the dry solute recovered from the given data is 0.086 g.  Option C

To determine the mass of the dry solute recovered, we need to subtract the mass of the boat from the mass of the boat with the dry solute.

Given the data provided:

Boat Mass: 0.730 g

Boat + Solution: 0.929 g

Boat + Dry: 0.816 g

To find the mass of the dry solute, we subtract the boat mass from the boat + dry mass:

Mass of Dry Solute = (Boat + Dry) - (Boat Mass)

Mass of Dry Solute = 0.816 g - 0.730 g

Mass of Dry Solute = 0.086 g

Therefore, the correct answer is c) 0.086 g.

The mass of the dry solute recovered from the given data is 0.086 g. It is important to note that the mass of the dry solute is obtained by subtracting the mass of the boat from the mass of the boat with the dry solute, as the boat mass represents the weight of the empty boat or container used in the experiment.

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Answer:

Option D. 30 g

Explanation:

The balanced equation for the reaction is given below:

2Na + S —> Na₂S

Next, we shall determine the masses of Na and S that reacted from the balanced equation. This is can be obtained as:

Molar mass of Na = 23 g/mol

Mass of Na from the balanced equation = 2 × 23 = 46 g

Molar mass of S = 32 g/mol

Mass of S from the balanced equation = 1 × 32 = 32 g

SUMMARY:

From the balanced equation above,

46 g of Na reacted with 32 g of S.

Finally, we shall determine the mass sulphur, S needed to react with 43 g of sodium, Na. This can be obtained as follow:

From the balanced equation above,

46 g of Na reacted with 32 g of S.

Therefore, 43 g of Na will react with = (43 × 32)/46 = 30 g of S.

Thus, 30 g of S is needed for the reaction.

Compared to borneol, camphor has a narrower melting point range. Does the structure of this make sense? Describe your thinking.

The melting and boiling points of alcohols are usually lower than those of ketones. the intermolecular hydrogen bond's brightness. As a result, the melting point is greater in the boreal. Camphor is a substance that is waxy, flammable, and transparent and has a strong aroma. Its molecular structure contains the terpenoid molecule C10H16O. It grows on the large East Asian evergreen tree known as the camphor laurel (Cinnamomum camphora). Alcohols are substances with the general chemical formula R-OH, where R is an alkyl or a substituted alkyl group. Therefore, alcohols are alkane derivatives that include one or more H.

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