during the process of cloud formation, energy is taken from the surrounding air as water molecules condense into water or deposit to ice.

The correct equation for impulse is FΔt. The third option.

In mechanics, the impulse is the amount of force applied to an object for a certain amount of time leading to a change in the momentum of the object.

The impulse is mathematically expressed as:

Impulse = FΔt

Where F is the amount of force applied in Newton and Δt is the changes in the time spent applying the force. In other words, impulse is the product of force in Newtons and time in seconds.

Thus:

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The oxidation number of Ag in Ag2O is +1.

In Ag2O, there are two silver atoms (Ag) and one oxygen atom (O). Oxygen is known to have an oxidation number of -2 in most compounds. Since the compound is neutral, the sum of the oxidation numbers of all the atoms must equal zero.

Therefore, the oxidation numbers of the two silver atoms must add up to +2 to balance out the -2 oxidation number of the oxygen atom. Since there are two silver atoms, each silver atom must have an oxidation number of +1 to yield a total oxidation number of +2 for the compound.

In Ag2O, the silver atoms lose one electron each to form Ag+ ions. This results in an oxidation number of +1 for each silver atom. The oxygen atom gains two electrons from the silver atoms to achieve a stable octet configuration, resulting in an oxidation number of -2 for the oxygen atom. The compound Ag2O is formed through the transfer of electrons, with each silver atom exhibiting an oxidation number of +1.

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Explanation:

Number of molecules: 4.30×10²⁵

We need to find out the total number of moles.

Now, as per Avogadro's law, 6.02×10²³ of anything (Avogadro's number) constitutes a unit called one mole. Just like 12 is a dozen, 6.02×10²³ is a mole.

If you were given 24 bananas and you had to find out the number of dozens, you would divide the total number of bananas (24) by the number of bananas in one dozen (12).

We do exactly the same here: divide the total number of molecules (4.30×10²⁵) by the number of molecules in one mole (6.02×10²³) to get the number of moles.

4.30×10²⁵ / 6.02×10²³ = number of moles

Solving, we get number of NH3 moles = 71.4 which is your final answer!

Hope this helps :D

Answer:

El cloruro de litio se utiliza para fabricar litio metálico. El cloruro de litio se funde y electroliza. Esto produce litio metálico líquido.

Explanation:

sowwy si mi español es malo

Answer:

give him brainliest

Explanation:

Answer:

0.877 mL

Explanation:

The box's density would be the ratio of the mass of the box and its volume
which is, (23.23/26.5) mL
or, 0.8766 mL
We must round this down to 3 significant figures,
which will be 0.877 mL

Answer:

because the water would diloute the chemicals in the vinegar

Explanation:

1) Gas escapes to equalize pressure inside and outside of balloon.

2) Pressure pushes gases out of the balloon when released.

3) The gas pushes against the outside air, pushing it back.

For its creator, Frenchman Jacques Charles, a gas balloon may also be referred to as a Charlière. Large blimps and tiny latex celebration balloons are two common types of gas balloons today. Before hot-air balloons took over, human balloon flying used gas balloons for almost 200 years, well into the 20th century.

Fill your balloon with two teaspoons of baking soda, and fill the container with half a cup of acetic vinegar. Avoid using too much cola! The baking soda in the balloon will descend into the container and mix with the vinegar when the bottleneck is inserted into the balloon's neck and the balloon is straightened.

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There are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.

To determine the number of moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3, we need to consider the stoichiometry of the compound.

The formula of aluminum sulfate (Al2(SO4)3) indicates that for every 1 mole of the compound, there are 2 moles of aluminum ions (Al3+). This means that the mole ratio of Al3+ to Al2(SO4)3 is 2:1.

Given that we have 0.42 mol of Al2(SO4)3, we can calculate the moles of Al3+ as follows:

Moles of Al3+ = 0.42 mol Al2(SO4)3 x (2 mol Al3+ / 1 mol Al2(SO4)3)

Moles of Al3+ = 0.42 mol Al2(SO4)3 x 2

Moles of Al3+ = 0.84 mol Al3+

Therefore, there are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.

It's important to note that the stoichiometry of the compound determines the mole ratio between the different species involved in the chemical formula. In this case, the 2:1 ratio of Al3+ to Al2(SO4)3 allows us to determine the number of moles of Al3+ based on the given amount of Al2(SO4)3.

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Answer:

A. Robots go places humans are unable to go.

Answer:

Lets take a 100g sample of Laughing Gas

Since there is 63.62% Nitrogen by mass, we have 63.62 grams of Nitrogen

Since there is 36.4% Oxygen by mass, we have 36.4 grams of Oxygen

Calculating the number of moles of Nitrogen and Oxygen

Moles of N = 63.62/14 = 4.5 moles

Moles of O2 = 36.4/16 = 2.25 moles

Empirical formula  = Moles of N/ Moles of O2

Empirical Formula = 4.5 / 2.25

N : O2 = 2 : 1

Therefore, the Empirical formula for Laughing Gas is N₂O

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Answer: 3.44%

Explanation: try it for math

Line spectrum of hydrogen atom in Lyman series is formed​ 'absorbs energy and gets excited'

The electron in a hydrogen atom absorbs energy and gets excited and the electron jumps from a lower energy level to a higher energy level and when it comes back to its original state, it gives out energy which forms a hydrogen spectrum and the line in Lyman series is formed​ by electronic transition and all the wavelengths in the Lyman series are in the ultraviolet band and this are seen in ultraviolet emission lines of the hydrogen atom as an electron goes from n ≥ 2 to n = 1 where n is the principal quantum number and the lowest energy level of the electron.

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The question is incomplete, the complete question is:

Using the following portion of the activity series for oxidation half-reactions, determine which combination of reactants will result in a reaction.

\(Li(s)\rightarrow Li^+(aq)+e^-\)

\(Al(s)\rightarrow Al^{3+}(aq)+3e^-\)

A) Li(s) with Al(s)

B) Li(s) with \(Al^{3+}\) (aq)

C) \(Li^+\) (aq) with Al(s)

D) \(Li^+\) (aq) with \(Al^{3+}\) (aq)

Answer: The correct option is B): Li(s) with \(Al^{3+}\) (aq)

Explanation:

The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction.

A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction.  

The chemical species will undergo a reduction reaction if the value of standard reduction potential is more positive or less negative.

For the given half-reactions:

\(Li(s)\rightarrow Li^+(aq)+e^-;E^o_{Li^+/Li}=-3.04V\)

\(Al(s)\rightarrow Al^{3+}(aq)+3e^-;E^o_{Al^{3+}/Al}=-1.662V\)

As the value of standard reduction potential of aluminium is less negative. Thus, it undergoes reduction reaction and lithium will undergo oxidation reaction.

The half-reaction follows:

Oxidation half-reaction:  \(Li(s)\rightarrow Li^+(aq)+e^-\)            ( × 3)

Reduction half-reaction:  \(Al^{3+}(aq)+3e^-\rightarrow Al(s)\)

Overall cell-reaction:  \(3Li(s)+Al^{3+}(aq)\rightarrow 3Li^+(aq)+Al(s)\)

Hence, the correct option is B): Li(s) with \(Al^{3+}\) (aq)

Answer:

sorry i dont know

Explanation:

Answer:

cannot be measure

Hope this helps :) !!!

Answer: Spun yarn is made by twisting staple fibers together

To make a cohesive thread Or “single”. Twisting fibers, into yarn in the process called spinning can be dated back to the upper Paleolithic. Yarn spinning was one of the first processes to be industrialized.

Explanation:

Answer:

It loses electrons.

Explanation:

When an atom is oxidized in a redox reaction, it simply loses electrons and the oxidation number increases.

An oxidized atom implies that oxidation has occurred; oxidation can be defined as:

D. It loses electrons

Here's how it works!

Oxidation occurs when an atom, molecule, or ion loses one or more electrons. In the process of oxidation, the oxidation state of the chemical species increases. Originally, the term was used to describe when oxygen caused electron loss in reactions. I hope that helps you!

Answer:

Yes it does

Explanation:

Silver is a chemical element with the symbol Ag and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal.[citation needed] The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc refining.

Answer:Chemistry is important for meeting our needs of food,clothing,shelter,health,energy,and clan air,water,and soil.

Answer:

\(\boxed {\boxed {\sf c\approx 0.159 \ J/ g \textdegree C}}\)

Explanation:

We are asked to find the specific heat capacity of a sample of lead. The formula for calculating the specific heat capacity is:

\(c= \frac{Q}{m \times \Delta T}\)

The heat absorbed (Q) is 237 Joules. The mass of the lead sample (m) is 22.7 grams. The change in temperature (ΔT) is the difference between the final temperature and the initial temperature. The temperature increases from 29.8 °C to 95.6 °C.

Now we know all three variables and can substitute them into the formula.

\(c= \frac {237 \ J}{22.7 \ g \ \times \ 65.8 \textdegree C}\)

Solve the denominator.

\(c= \frac {237 \ J}{1493.66 \ g \textdegree C}\)

Divide.

\(c= 0.1586706479 J /g \textdegree C\)

The original values of heat, temperature, and mass all have 3 significant figures, so our answer must have the same. For the number we found that is the thousandth place. The 6 in the ten-thousandth place tells us to round the 8 up to a 9.

\(c \approx 0.159 \ J/g \textdegree C\)

The specific heat capacity of lead is approximately 0.159 Joules per gram degree Celsius.

Answer:

ch3

Explanation:

To find the number of moles of a given solution, multiply the volume of the solution (in liters) by the molarity of the solution (in molarity). In this case, the volume of the solution is 1.5 liters and the molarity is 0.77 molarity.

Molarity is a measure of concentration of a solute in a solution expressed as the number of moles of solute per liter of solution (mol/L). It is a commonly used unit of concentration in chemistry. Molarity is often used to measure the amount of a solute in a given volume of solution and is also used to calculate the amount of a solute needed to create a given volume of solution at a given concentration.

Moles of KCl = 1.5 L x 0.77 M = 1.155

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Answer:

A

Explanation:

when water heats it expands its the only one that fits in context

1. Water begins to boil - Endothermic

2. Fireworks explode - Exothermic

3. Sweat evaporates cooling your skin - Endothermic

4. Water begins to freeze into ice - Exothermic

5. You ignite your homework assignments once the year is over - Exothermic

6.Sunrays burn your skin - Exothermic

7.Cellular respiration - Exothermic

Exothermic and endothermic refer to two types of chemical reactions or physical processes that release or absorb energy, respectively.

Exothermic reactions release energy in the form of heat, light, or sound. When these reactions occur, they produce a net release of energy into the surroundings, which can often be felt as an increase in temperature. Examples of exothermic reactions include combustion, oxidation, and many types of explosions.

Endothermic reactions, on the other hand, absorb energy from the surroundings in order to proceed. These reactions typically feel cold to the touch and require energy to be added to the system in order to occur. Examples of endothermic reactions include melting, evaporation, and many types of chemical reactions that require heat to be added in order to proceed.

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The  name of the organic compound with structural formula of nine carbons and sixteen hydrogens  depends on different factors

The nomenclature of the organic molecule comprising nine carbons and sixteen hydrogens is determined by the arrangement of its atoms as well as the nature of the chemical bonds linking them together. Cyclononane is a circular formation of nine carbon atoms.

An organic substance belongs to a group of chemicals that have carbon atoms linked to each other and other atoms through covalent bonds, and are present in the biological cells. Organic compounds contain usual elements such as carbon, as well as hydrogen, oxygen, and nitrogen.

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Answer:

products have a higher potential energy than the reactants

Explanation:

The total potential energy of the system increases for the endothermic reaction as the system absorbs energy from the surroundings. The total potential energy of the system decreases for the exothermic reaction as the system releases energy to the surroundings

The endothermic reaction results in the increase in the potential energy of the product than the reactant. Thus, option C is correct.

The endothermic reaction is given as one in which the heat is absorbed by the system, and no energy is released.

The increase in the heat of the product is mediated that governs the increase in the potential energy of the product than the reactant due to absorption. Thus, option C is correct.

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Although sodium and phosphorus are both found in the same period of the periodic table, the nature of their oxides is different. Although P2O5 is acidic, Na2O is basic.

Metal oxides are basic, whereas non-metal oxides are acidic. The metallic character of the elements lessens as you move from left to right over time, while the non-metallic character grows.

Since the oxides in an element's higher oxidation state are more acidic than those in its lower oxidation state, dinitrogen pentoxide is the most acidic oxide compared to nitrogen dioxide and nitrogen tetraoxide.

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HCN, Na2SO4: Combination of compounds.

Mg3N2: Chemical compound.

CO2, H2O: Dissolution or hydration reaction.

Cu, Zn(NO3)2: Single-replacement reaction.

Na, N2: Combination of elements.

Let's analyze each chemical combination to determine the type of reaction involved:

HCN, Na2SO4:

The combination of hydrogen cyanide (HCN) and sodium sulfate (Na2SO4) does not represent a specific chemical reaction. It is simply the combination of two compounds.

Mg3N2:

Mg3N2 represents a chemical compound, magnesium nitride. It does not indicate a specific reaction.

CO2, H2O:

The combination of carbon dioxide (CO2) and water (H2O) represents a chemical reaction known as hydration or dissolution. When carbon dioxide dissolves in water, it forms carbonic acid (H2CO3), which can further dissociate into hydrogen ions (H+) and bicarbonate ions (HCO3-).

Cu, Zn(NO3)2:

The combination of copper (Cu) and zinc nitrate (Zn(NO3)2) represents a single-replacement reaction. Copper displaces zinc from the compound, resulting in the formation of copper nitrate (Cu(NO3)2) and zinc metal (Zn).

Na, N2:

The combination of sodium (Na) and nitrogen gas (N2) does not represent a specific reaction. It is simply the combination of two elements.

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Answer:

B.

Explanation:

A chemical bond holds together attractions of atoms