find the volume of 0.240 m sulfuric acid necessary to react completely with 66.9 g sodium hydroxide.

The following statement is true a mechanical wave needs a medium to transfer energy.

To convey energy, a mechanical wave requires a medium. The only thing that waves move is energy. The particles contribute to the wave's propagation by passing the disturbance from one particle to the next. Mechanical waves are those that need a medium to move their energy from one place to another. Mechanical waves cannot move through areas of space where there are no particles because their energy transmission depends on particle contact. While waves can move energy from one location to another, they do not always move mass. Common examples of waves include ocean waves, light waves, and sound waves. Without moving any physical objects, a wave moves its energy. Energy is transferred by the vibrations of the electric and magnetic fields in electromagnetic waves. When a sound wave travels through air or a solid medium, air or solid particle vibrations are used to transport energy.

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1.47 × 10²¹ molecules OF₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

0.132 g OF₂

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of O - 16.00 g/mol

Molar Mass of F - 19.00 g/mol

Molar Mass of OF₂ - 16.00 + 2(19.00) = 54.00 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

1.47204 × 10²¹ molecules OF₂ ≈ 1.47 × 10²¹ molecules OF₂

pH is a measure of the hydrogen ion concentration of the water as ranked on a scale of 1 to 14. The lower the pH of water, the more acidic it is. The higher the pH of water, the more basic, or alkaline, it is. Lemon juice has an acidic and sour flavor. Lemon juice is acidic, applying anything acidic to your eyes will cause them to sting and hurt.

People describe a soapy taste as bitter, slightly metallic, and burning. A great variety of soaps contain a pH range of 9-10 as they are mostly alkaline. Your eyes have a low tolerance for alkaline substances. Thus, when soap gets into them, the pH difference results in a burning sensation. A pH paper is a piece of paper used to find out if a solution is basic, acidic, or neutral. A pH paper changes color in different solutions due to the chemical flavin.

Ammonia is a weak base because its nitrogen atom has an electron pair that readily accepts a proton. Also, when dissolved in water, ammonia acquires hydrogen ions from water to produce hydroxide and ammonium ions. It is the production of these hydroxide ions that imparts ammonia its characteristic basicity.

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Answer:

4.2 g good luck with the answer

sublimation/deposition A-solid, B- liquid, C-gas  is represented by the transition from b to c

Sublimation is the direct transition of a material from a solid form to a gas state in scientific words. It only happens at certain temperatures and pressures and does not go through the typical liquid stage. Actually, sublimation printing employs heat to fuse ink and cloth together. On special paper, a design is first printed. When heated, the inks that are employed transform into gas, mix with the cloth, and leave a permanent imprint on the fabric.

what phase change is represented by the transition from b to c? a) fusion b) sublimation c) vaporization d) condensation e) solidification (deposition)

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Answer:

The parts of an atom are protons, electrons, and neutrons.

A proton is positively charged and is located in the center or nucleus of the atom.

Electrons are negatively charged and are located in rings or orbits spinning around the nucleus.

The number of protons and electrons is always equal.

Answer:

protons, electrons, and neutrons.

A proton is positively charged and is located in the center or nucleus of the atom.

Electrons are negatively charged and are located in rings or orbits spinning around the nucleus.

The number of protons and electrons is always equal.

Explanation:

Volume (in L) of Carbon dioxide : 23.6 L

Avogadro's hypothesis:  

In the same T,P and V, the gas contains the same number of molecules  

So the ratio of gas volume will be equal to the ratio of gas moles  

\(\tt \dfrac{V_1}{n_1}=\dfrac{V_2}{n_2}\)

Combustion of ethane :

\(\tt 2C_2H_6+7O_2\Rightarrow 4CO_2+6H_2O\)

mol ratio of C₂H₆ : CO₂ ⇒ 2 : 4

so the volume of CO₂ :

\(\tt \dfrac{V_1}{n_1}=\dfrac{V_2}{n_2}\\\\\dfrac{11.8}{2}=\dfrac{V_2}{4}\\\\V_2=\boxed{\bold{23.6~L}}\)

Answer:

23.6

Explanation:

Answer:

Adding Na3PO4(s) will introduce more PO4^3- ions into the solution, which will react with H3O+ ions to form more H3PO4 and H2O through the reverse reaction. This will shift the equilibrium to the left, decreasing the concentration of H3O+ ions and increasing the concentration of H3PO4 and H2O. Therefore, the concentration of H3O+ ions will decrease, and the correct answer is (C) H3O+.

Answer: type the compound into your search bar then it should tell you what it is for 3. you should look up "what is the formula for -----" same thing for #4

Explanation:

Answer:

2.a.  germanium tetrahydride

2.b. dinitrogen tetrabromide

2.c. diphosphorus pentasulfide

2.d. selenium dioxide

2.e. nitrogen trihydride

2.f. silicon dioxide

3.a. PO3

3.b. SiCl4

3.c. N2O5

3.e. N2O4

3.f. CO

4.a CO2

4.b. SF6

4.c. N2Cl4

4.d. CI4

4.e. PF5

4.f. P2O5

****All numbers are subscripts, please do not write them as is, but to the bottom right of them like shown in the options from question 2.

Explanation:

To name covalent compounds (NM+NM), we use prefixes.

To name covalent compounds goes as follows:

First, name the first element in the formula the normal name it has (ex. Nitrogen, Oxygen). If the first element is present more than once shown by a subscript, use a prefix that will indicate how many there are present (ex. mono, di, tri).

Next, name the second element in the compound using prefixes aswell if present more than once. These elements though, will end with -ide instead of their original name (ex. monoxide, dibromide, trichloride).

Adding NH3 to water makes NH4 . the pH of this new solution is alkaline. in the ion concentrations , there is a decreased H+ ions and increased OH-.

Ammonia is a compound of nitrogen and hydrogen . it is a stable binary hydride . it is a colorless gas with pungent smell . it is used as fertilizer , refrigerant gas , for purification of water , manufacture of plastic , pesticides , textile , dyes .

pH is the measure of acidity and basicity of a substance .

pH stands for hydrogen potential . it can be defined as the negative log of hydrogen ion concentration .

it can be measured by a pH scale , which ranges from 0 to 14 .

if the pH value is less than 7 , then the compound is called as acidic .

if the Ph value is greater than 7 , then the compound is called as basic .

if the pH is 7 , then the compound is called as neutral compound .

pH equals to 0 , called strongly acidic solution . pH equals to 14 is called strongly  basic solution .

pH does not have units .

The formula for pH is given by ,

pH = - log[H+]

pH zero for 1N solution of strong acid .

pH is negative for concentrations 2N, 3N ,10N of strong acids .

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Answer:

b) no change; an increase

Explanation:

Kinetic energy does not change but potential energy increases at melting point.

Answer: During chemical weathering, sodium is released as dissolved ions and transported to the ocean, where it increases the salinity of the seawater.

Salinity is a measure of the amount of salt in seawater. The greater the salinity, the more salt there is in the water. The salinity of seawater is expressed in parts per thousand (ppt). There are about 35 ppt of salt in seawater.

Chemical weathering is the breakdown of rocks by chemical reactions, resulting in the formation of new minerals. Water is the most common medium for chemical weathering because it can dissolve many minerals. Carbon dioxide, oxygen, and organic acids are also involved in chemical weathering.

Sodium is a common element in minerals that are subject to chemical weathering. When rocks weather, sodium ions are released into the water. Rivers and streams transport these dissolved ions to the ocean, where they accumulate over time.

This is why seawater has a high concentration of sodium ions. Sodium is also introduced into seawater through underwater volcanoes and hydrothermal vents.

Sodium is important for many organisms that live in the ocean. It is an essential nutrient for marine animals, and it plays a role in regulating the body fluids of fish and other aquatic animals. Sodium is also important for maintaining the pH of seawater.

The concentration of sodium in seawater can also have an impact on ocean currents and the movement of water around the world.


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According to molecular orbital theory, there are three pi-antibonding molecular orbitals in benzene. These molecular orbitals are formed by the out-of-phase combination of pi orbitals of adjacent carbon atoms.

In benzene, there are six pi orbitals that form a delocalized pi system above and below the plane of the molecule. These pi orbitals interact with each other to form three bonding pi molecular orbitals and three antibonding pi molecular orbitals.

The bonding pi molecular orbitals are lower in energy and are occupied by the six pi electrons, while the three higher-energy antibonding pi molecular orbitals are unoccupied.

Since pi-antibonding orbitals are destabilizing and lead to weaker bonds, the presence of these three pi-antibonding molecular orbitals in benzene suggests that the pi bonds in the molecule are weaker than the sigma bonds.

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Answer: Your welcome!

Explanation:

If some of the salt sample splashed out during heating, it would affect the experimental data in several ways. Firstly, the amount of water evaporated would be lower than what would have been calculated without any salt sample splashing out. This is because the salt sample contains some of the evaporating water molecules, so if some of the salt sample splashed out, those water molecules would not contribute to the total amount of water evaporated. Additionally, the salt sample contains dissolved solids which, when evaporated, would also contribute to the total amount of water evaporated. If some of the salt sample splashed out, the dissolved solids in the sample would not contribute to the total amount of water evaporated, thus further decreasing the total amount of water evaporated. Therefore, if some of the salt sample splashed out during heating, the experimental value of the calculation of the water evaporated would be lower than it would have been without any salt sample splashing out.

The reaction of H-NH₂ Z-I A and A l dehuriae A in the presence of an acid leads to the formation of two stereoisomers of a cyclic hemiacetal, which contain both an alcohol and a carbonyl group in the same molecule.

The intramolecular reaction of H-NH₂ Z-I A and A l dehuriae A in the presence of an acid results in the formation of hemiacetals. Hemiacetals are cyclic compounds that contain both an alcohol (-OH) and a carbonyl (C=O) group in the same molecule.

To draw the stereoisomers formed in this reaction, we need to understand the structure of the reactants. H-NH₂ represents a primary amine (R-NH₂), which can react with a carbonyl group to form an imine (R-N=CR'). Z-I A and A l dehuriae A are aldehydes, which contain a carbonyl group (-CHO) at the end of the carbon chain.

When these compounds undergo an intramolecular reaction in the presence of acid, the carbonyl group of the aldehyde reacts with the amine group of the same molecule to form a cyclic hemiacetal.

The hemiacetal will have a stereocenter at the carbon atom that was part of the carbonyl group. The product will have two possible stereoisomers, depending on the orientation of the substituents around the stereocenter.

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Because there are free electrons present, solid copper conducts electricity. CuCl2(g) does not conduct electricity because it contains no free electrons.

Because free electrons are drawn to metal cations by electrostatic forces in the metallic connection, metals are referred to as conductors of electricity. The conductivity of solid metals is accounted for by these free electrons.

The word "conductivity" is used to describe a number of physical phenomena. In terms of heat, conductivity is the amount of heat that moves through a slab with a unit cross-sectional area per second when there is no temperature difference between the two faces.

Conductivity is a helpful indicator of water quality in general. Every body of water has a typical conductivity range that, once determined, can be used as a reference point for comparison with routine conductivity tests.

A medium that contains ions and is electrically conducting due to the mobility of those ions but does not conduct electrons is called an electrolyte. This contains the majority of salts, acids, and bases that are soluble when dissolved in polar solvents like water.

Along with magnesium, calcium, phosphate, and bicarbonates, sodium, potassium, and chloride are the important electrolytes. We obtain electrolytes from our diet and drinks. Unbalanced amounts of these electrolytes might result in either high or low levels.

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Answer:

Kelvin scale.

Explanation:

the lelvin scale is used in gas law problems because the pressure and volume of gas depend on the kinetic energy or motion of the particles.

Answer:

Non metals

Explanation:

Answer:

Are you asking for all of them? Some of the basic ones are alluminum and carbon.

Answer:

Explanation:

The molecular formula is the true chemical formula of a covalent molecular compound, and a multiple of the empirical formula. We can use the molar mass, along with the molar empirical mass, determined from the empirical formula, to determine the molecular formula of the compound.

Using, the percentage composition of each element, we can say: In each 100g of the compound, there is 49.47g (C), 5.201g (H), 28.84g (N), and 16.47g (O).

Therefore, we can now find the number of moles of each element, in 100g of compound. number of moles (n) = mass present (m) ÷ molar mass (M). Molar mass can be found using a standard IUPAC Periodic Table.

n(C) = m/M = 49.47/12.01 = 4.1191 mol

n(H) = m/M = 5.201/1.008 = 5.1597 mol

n(N) = m/M = 28.84/14.01 = 2.0585 mol

n(O) = m/M = 16.47/16.00 = 1.0293 mol

Since the empirical formula is one in which the proportions of each element are expressed in the simplest mole ratio, therefore:

C : H : N : O = 4.1191 : 5.1597 : 2.0585 : 1.0293

Divide each ratio by 4.1191 =

1 : 1.00985 : 0.4997 : 0.249, which is approximately equal to:

1 : 1 : 0.5 : 0.25 = 2 : 2 : 1 : 0.5 = 4 : 4 : 2 : 1

Therefore, empirical formula = C₄H₄N₂O.

Using empirical formula, we can calculate molar empirical mass, which is found by summing the molar atomic weights.

molar empirical mass = 4(12.01)+4(1.008) + 2(14.01) + 16.00 = 96.092.

The molar empirical mass is double the molar mass, and therefore, molecular formula must be half the empirical formula.

Therefore, molecular formula = C₂H₂NO

The statement is FALSE. Non-ferrous metals can be hardened by heat treatment, although the mechanisms and processes involved may differ from ferrous metals.

Heat treatment techniques such as precipitation hardening can be used to increase the strength of non-ferrous metals. Non-ferrous metals are metals or alloys that do not include iron (or iron allotropes, such as ferrite, etc.) in significant quantities. Non-ferrous metals are employed because they have desired qualities like reduced weight (for example, aluminium), greater conductivity (for example, copper), non-magnetic characteristics, or corrosion resistance (for example, zinc), even though they are often more expensive than ferrous metals. In the iron and steel sectors, several non-ferrous materials are also employed. Bauxite, for instance, is used as a flux in blast furnaces, whereas wolframite, pyrolusite, and chromite are utilised to create ferrous alloys.

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Answer:

1.Frequency

2.Amplitude

3.Wavelength

4.Medium

5.Back and Forth

6.Up and Down

Explanation:

CORRECT ME IF I'm wrong

Answer:

Explanation:

Using Charles's Law to solve this question: V1/T1 = V2/T2

V1 = 2.24L

T1 = 52C (covert to Kelvin by plus 273.15) = 325.15K

V2 = 1.66L

T2 = ?

V1/T1 = V2/T2 must change to V2×T1/V1 = T2

1.66 x 325.15/2.24 = V2

V2 = 240.96K ≈ 241K

The weather in an area is affected mostly by the interactions between oceans, the atmosphere, and sunlight. The correct option is A.

The day to day state of the atmosphere at a particular place that comprises of atmospheric pressure, sunlight, humidity, rainfall etc. is defined as the weather. It changes from place to place in accordance with the climate.

There are several types of weather and the most important among them are sunny, rainy, snowy and cloudy. In sunny days the temperature will be very high and there are no clouds in these days.

The weather is found to be cloudy in the days with lots of clouds and these clouds found to produce rain and forms the rainy weather. The snowy weather is also called winter because of low temperature.

The weather which influence our daily lives arises from the atmosphere due to the interactions of radiations from sun, earth's ocean and because of the motion in space.

Thus the correct option is A.

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Answer: Answer would be two

Explanation:

Answer:

transfer energy to the surroundings

Explanation:

Exo means exit

Answer:

Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport.

Explanation:

Answer: pears,  oatmeal, green beans, corn, oranges, black beans,bananas, asparagus

Answer:

Explanation:

C - Mix ice with water until equilibrium is reached but some ice remains that is no longer melting.