0.655 moles NH3 in grams

Answer:

2I4O9_4I +9O

Explanation:

Complex compound (

I

4

O

9

) is broken down to form

I

2

and

O

2

Answer:

Decomposition

Explanation:

Because it went from one compound to two elements.

A battery is a device that converts chemical energy into electrical energy through a process known as an electrochemical reaction.

When a battery is connected to a circuit, the electrochemical reaction causes a flow of electrons from the anode to the cathode, generating an electric current that can power a device.

The metal chosen for the anode must be capable of losing electrons easily, while the metal chosen for the cathode must be capable of accepting electrons. The choice of metals can also affect the voltage and capacity of the battery, as well as its overall efficiency.

In general, the metals used in a battery should have a large difference in their electronegativity values, which determines how easily an atom can attract electrons. Common metals used in batteries include zinc, lithium, nickel, and cadmium.

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Answer:

when he collided with the passerby

Explanation:

Explanation:

Given:

The complete equation is:

The balanced ionic equation for the reaction is:

The BaSO₄ is an insoluble solid, so it will not dissociate into ions.

The spectator ions in the reaction are ions that are present at both the reactant side and the product side.

Hence, the spectator ions are:

Therefore, the balanced net ionic equation is:

To prepare the pH 4.00 buffer solution, you should mix approximately 61.35 mL of the 0.100 M benzoic acid solution with 38.65 mL of the 0.240 M sodium benzoate solution.The ratio of benzoic acid to sodium benzoate in the buffer solution using the Henderson-Hasselbalch equation.

To prepare a pH 4.00 buffer solution using benzoic acid and sodium benzoate, we need to calculate the appropriate volumes of the 0.100 M benzoic acid and 0.240 M sodium benzoate solutions.

First, we need to determine the ratio of benzoic acid to sodium benzoate in the buffer solution. The Henderson-Hasselbalch equation can help us with this calculation:

pH = pKa + log([A-]/[HA])

Given that the pH is 4.00 and pKa is 4.20, we can rearrange the equation:

log([A-]/[HA]) = pH - pKa

log([A-]/[HA]) = 4.00 - 4.20

log([A-]/[HA]) = -0.20

Next, we take the antilog of -0.20 to find the ratio of [A-] to [HA]:

[A-]/[HA] = antilog(-0.20)

[A-]/[HA] = 0.63

The ratio of [A-] to [HA] is 0.63.

Now, let's calculate the volumes of each solution needed. Let's assume x represents the volume (in mL) of the 0.100 M benzoic acid solution and y represents the volume (in mL) of the 0.240 M sodium benzoate solution.

Since the total volume is 100.0 mL, we have the equation: x + y = 100

Considering the ratio of [A-] to [HA] as 0.63, we can write the equation: y/x = 0.63

Solving these two equations simultaneously will give us the volumes of each solution:

x + y = 100

y/x = 0.63

By substituting y = 0.63x from the second equation into the first equation, we get:

x + 0.63x = 100

1.63x = 100

x = 61.35 mL (rounded to two decimal places)

Substituting this value back into the equation x + y = 100, we find:

61.35 + y = 100

y = 38.65 mL (rounded to two decimal places)

Therefore, to prepare the pH 4.00 buffer solution, you should mix approximately 61.35 mL of the 0.100 M benzoic acid solution with 38.65 mL of the 0.240 M sodium benzoate solution.

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Answer:

newtons 3rd law

Explanation:

if the engine is supplying propulsion, then the mass will be pushed by it.

Answer: 5.248

Explanation: 0.53/0.1010 = 5.24752475248, and round to the thousandths.

The temperature of the room water and the block will be the same. The energy being transferred from the block to the water is heat energy.

The hot metal block is dropped into another beaker of water having room temperature after being placed in the boiling water. The flow of energy from the higher-temperature matter to the lower-temperature matter is called heat.

Now, the heat is transferred from the metal block to the water which is at room temperature. After some time, the metal block will have a low temperature and the water will have a high temperature.

This process will be carried down until both objects will have the same temperature. It is known as thermal equilibrium. The heat transfer from the hot water to the normal or cold water through a metal block is said to be conduction.

Therefore, the energy that is being transferred from the metal block to the water is heat energy.

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Answer:

False

Explanation:

The outer core is a liquid and is made out of nickel and copper

The 10. 00 g sample contains 7. 494 g C and 1. 260 g H. 1.25g is the mass of oxygen in gram of oxygen are in the carbohydrate sample.

A body's mass is an inherent quality. Prior to the discoveries of the atom or particle physics, it was widely considered to be tied to the amount of matter within a physical body. It was discovered that, despite having the same quantity of matter in theory, different atoms and elementary particles have varied masses. There are various conceptions of mass in contemporary physics that are theoretically different but physically equivalent.

Mass of sample = mass of carbon + mass of Hydrogen + mass of oxygen

10. 00=  7. 494 +  1. 260 + mass of oxygen

mass of oxygen= 1.25g

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The molar mass of the gas that has a mass of 3.82 g and occupies a volume of 0.854 L is 106.66g/mol.

The molar mass of a substance can be calculated by dividing the mass of the substance by its number of moles.

However, the number of moles of the gas in this question needs to be calculated first using the ideal gas law equation:

PV = nRT

Where;

1.04 × 0.854 = n × 0.0821 × 302

0.888 = 24.79n

n = 0.888/24.79

n = 0.036mol

Molar mass of gas = 3.82g/0.036mol

Molar mass = 106.66g/mol

Therefore, the molar mass of the gas that has a mass of 3.82 g and occupies a volume of 0.854 L is 106.66g/mol.

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Answer: 0.160 M

Explanation:

Answer:

32.09 amu is that an option i’m pretty sure that’s right but i would try and make sure

Explanation:

The sigma bond between b and f in tetrafluoroborate ion, bf4-, is formed by the overlap of the atomic orbitals of boron and fluorine. Specifically, each of which contributes one p orbital to form a sp3-p sigma bond.

In the tetrafluoroborate ion (BF4-), the bond between boron (B) and fluorine (F) is a sigma (σ) bond. The σ bond is formed by the overlap of atomic or hybrid orbitals.Boron in BF4- is sp3 hybridized, which means that it has four hybrid orbitals that are involved in bonding. Three of these hybrid orbitals are involved in bonding with three of the fluorine atoms, while the fourth hybrid orbital is used to form the σ bond with the fourth fluorine atom.Fluorine is a halogen and has the electron configuration of 1s2 2s2 2p5. In BF4-, each of the fluorine atoms is also involved in the formation of the σ bond with boron. Fluorine has three unpaired electrons in its 2p orbitals that can form a σ bond by overlapping with the sp3 hybrid orbital of boron.Therefore, the σ bond between boron and fluorine in BF4- is formed by the overlap of the sp3 hybrid orbital of boron and the 2p orbital of the fluorine atom.

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Answer:

\(3Ca(OH)_{2} + 2H_3PO_4 ==> Ca_3(PO_4)_2 + 6H_2O\)

Explanation:

The chemical equation represented as:

\(2H_3PO_4 (aq)+ 3Ca (OH)_2 (aq) ----- > Ca(PO_4)_2 (s)+ 6H_2O (l)\)

A chemical equation is defined as a symbolic representation of a chemical reaction in the form of symbols and chemical formulas. Coefficients that are used in front of reactants and products to balance the equation to show that matter is conserved.

Representation of chemical reactions by symbols and formulas of substances is called chemical equation. In this equation A and B are called reactants and C and D are called products while the arrow shows the direction of the chemical reaction.

For the above given information,

\(2H_3PO_4 (aq)+ 3Ca (OH)_2 (aq) ----- > Ca(PO_4)_2 (s)+ 6H_2O (l)\)

Phosphoric      Calcium                               Calcium          Water

acid                hydroxide                            phosphate

Where, Aqueous phosphoric acid and aqueous calcium hydroxide are reactants and solid calcium phosphate and water are products.

Thus, the chemical equation represented as:

\(2H_3PO_4 (aq)+ 3Ca (OH)_2 (aq) ----- > Ca(PO_4)_2 (s)+ 6H_2O (l)\)

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Answer:

compound

Explanation:

Statement disproved by Dalton's atomic theory is atoms are indivisible and indestructible.In Rutherford’s gold foil experiment the atom has a small but very dense nucleus containing protons and neutrons.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Organization is the property of all living things that is illustrated by the orderly arrangement of macromolecules.

The property of all living things that is illustrated by the orderly arrangement of macromolecules is organization.

Organization is the process of arranging different components of an entity to achieve a specific objective.

In living organisms, different components are arranged orderly to maintain life. Living organisms have cells that work together to achieve specific objectives.

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Answer:The specific heat of water is 1 calorie/gram °C = 4.186 joule/gram °C.

Explanation:Therefore the required amount of energy is following:

Q = c*m*dT = 4.186 * 120 * (24 - 2) = 11,051 J

Answer:

A) They have the same charge.

B) They are located in the nucleus together.

C) Particle A has a positive charge, and Particle B is neutral.

D) Particle A orbits the nucleus, and Particle B is located in the nucleus.

Explanation:

Sodium (Na) and potassium (K) in the same group on the periodic table because of option B They have similar reactivity.

The periodic table, also called the periodic table of the factors, is a tabular show of the chemical elements. it is broadly used in chemistry, physics, and other sciences, and is typically visible as an icon of chemistry.

Lithium, sodium, and potassium have the same wide variety of valence electrons i.e. 1, for this reason, they belong to the same organization. The institution is referred to as the alkali metals group because these kinds of elements shape oxides that dissolve in water to form alkali.

Potassium is observed clearly in lots of meals and as a complement. Its major position within the body is to assist maintain ordinary levels of fluid inside our cells. Sodium, its counterpart, keeps regular fluid ranges outdoors of cells. Potassium also helps muscles to settle and supports normal blood pressure.

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Answer:

C. It helps a plant conserve energy.

Explanation:

Dormancy is a time in a plants life that it stops all physical growth, therefore conserving energy.

Hope this helps.

Measurement is the number or quantity that shows the size of the object. The measurements from longest to shortest are yards, km, inch, and nm.

Length is measured by various scales that include the distance and the range that can be stated in a unit. The unit yard is the longest and is followed by kilometers, inches, and the nanometer.

Therefore, the order is yards, km, inch, and nm.

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When a reaction mixture reaches chemical equilibrium, The forward, as well as reverse reactions, happen at the same rates.

The concentrations of reactants, as well as products, remain unchanged when chemical equilibrium would be reached. It's crucial to keep in mind that both forward but also reverse reactions continue to happen, but at an equal rate.

The system enters a state of dynamic equilibrium when both forward as well as reverse reactions happen at the same rate. Chemical equilibrium happens when all of the reaction's steps reach dynamic equilibrium, or when there gets the balance between the reagents as well as the products is reached.

Therefore, when a reaction mixture reaches chemical equilibrium, The forward, as well as reverse reactions, happen at the same rates.

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Answer:

0.1 g

Explanation:

The bottom ruler has the smallest division because its intervals are 0.1, which are smaller than those of the upper two rullers.

Answer:

Explanation

My answer got deleted :

Answer:

Yes

Explanation:

First remember that a significant figure are basically values that contribute to the precision of a value. In any scientific notation the values are significant figures because these values stay the same. In this case we have two significant figures which is 6 and 0, you can further prove that they are significant figures by converting the notation into standard form.

\(6.0\times10^{-4}\)

Negative so move the decimal point to the left:

\(=0.00060\)

6 and 0 are the significant figures in this standard notation because it's precise to it's actual value which is 6.0.

To sum up, the values you have on the left side of a notation are significant figures since they will not change no matter if it's standard or scientific notation meaning it's precise.

Hope this helps.

The science that is primarily concerned with the study of matter and the changes it undergoes is chemistry (Option B).

Chemistry is the scientific study of matter, its properties, composition, structure, behavior, and the changes that matter undergoes during reactions with other substances. In a nutshell, chemistry deals with the characteristics and behavior of atoms and molecules, as well as their transformations, energy changes, and interactions.

The study of chemical reactions and the behavior of matter in different environments is the primary focus of chemistry. Therefore, chemistry is the science that is primarily concerned with the study of matter and the changes it undergoes.

Thus, the correct option is B.

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The total pressure of the gaseous mixture has been 5.37 atm. Thus, option D is correct.

The partial pressure has been defined as the pressure exerted by each gas in the mixture.

According to the Dalton's law of partial pressure, the total pressure of gas has been the sum of the partial pressure of the gases in the mixture.

The given partial pressure of gases in the mixture has been:

The total pressure of the gaseous mixture has been:

\(P=P_N_2\;+\;P_O_2\;+\;P_A_R\;+\;P_H_e\;+\;P_H\\P=3\;+\;1.80\;+\;0.29\;+\;0.18\;+\;0.10\;\text {atm}\\P=5.37\;\rm atm\)

The total pressure of the gaseous mixture has been 5.37 atm. Thus, option D is correct.

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Answer:The biuret

Explanation: