The simple unit of a compound

Answer:

The waves are behaving this way due to the simultaneous water drops landing in the water.

Explanation:

because ima smart baddie (≧▽≦)

Chemical equation: The reaction can be described by: KI + H2SO4 -> K2SO4 + H2O -> I2 The potassium iodide (KI), which contains iodide ions (I-), is oxidised by the sulfuric acid to produce molecular iodine in this reaction (I2).

Deep violet vapours with a strong scent would develop when concentrated sulfuric acid was added drop by drop to solid potassium iodide. If concentrated sulfuric acid is gradually introduced to solid potassium chloride, it will not result in the formation of these violet fumes.

Iodide ions are created when sodium sulphite and potassium iodate combine, and this process also results in the oxidation of iodide ions in an acidic medium.

To know more about iodine visit:-

https://brainly.com/question/16867213

#SPJ9

The pH of a 2.45 x 10^-3 M sulfuric acid solution is 2.61.

The pH of a solution can be calculated using the formula:

pH = -log[H+]

where [H+] represents the concentration of hydrogen ions in the solution.

For a strong acid like sulfuric acid (H2SO4), it is completely dissociated in water, meaning all of its molecules will release their hydrogen ions (H+) into the solution. Therefore, the concentration of hydrogen ions in the solution will be equal to the concentration of sulfuric acid.

In this case, the concentration of sulfuric acid is 2.45 x 10^-3 M. Therefore, the concentration of hydrogen ions is also 2.45 x 10^-3 M.

Now we can calculate the pH using the above formula:

pH = -log[H+]

= -log(2.45 x 10^-3)

= 2.61

Therefore, the pH of a 2.45 x 10^-3 M sulfuric acid solution is 2.61.

To know more about Sulfuric acid:

https://brainly.com/question/30425882?referrer=searchResults

#SPJ11

Answer:

k-39

Explanation:

also pls mark brainliest <3 :)))

Answer- k-39

Explanation:

it is the closest to the actual amu

Answer:

Choice D) 1 mL pipet

Explanation:

If you are trying to extract 0.02 mL of HCl, you are going to need a piece of equipment that can measure very small units. Thus, Choice D would be the correct answer.

Answer:

i should be A i hope this helps

Explanation:

Answer:

Graphing data can help you to recognize changes in what your doing.

Explanation:

Answer:

Explanation:

To identify trends, make predictions, and recognize anomalous data. Helps you understand what your data means or a picture of your graph. A graph wich the points form a straight line.

The correct matches are:

(i) Acid chlorides and esters experience primarily dipole-dipole interactions between their molecules.

(ii) 1º and 2º amides experience primarily hydrogen bonding between their molecules.

(iii) Acid chlorides, esters, and 3º amides have lower boiling points than other carboxylic acid derivatives of similar size and shape.

(iv) 1º and 2º amides have the highest boiling points among other carboxylic acid derivatives of similar size and shape.

i.

Acid chlorides and esters experience primarily dipole-dipole interactions between their molecules due to the presence of polar bonds within the molecules.

ii.

1º and 2º amides experience primarily hydrogen bonding between their molecules, as they contain the necessary hydrogen and oxygen or nitrogen atoms for hydrogen bonding.

iii.

Acid chlorides, esters, and 3º amides have lower boiling points than other carboxylic acid derivatives of similar size and shape. This is due to the absence of hydrogen bonding in these compounds, resulting in weaker intermolecular forces.

iv.

1º and 2º amides have the highest boiling points among other carboxylic acid derivatives of similar size and shape. This is because they can form extensive hydrogen bonding between their molecules, leading to stronger intermolecular forces and higher boiling points.

Learn more about dipole-dipole interactions from the link given below.

https://brainly.com/question/30772159

#SPJ4

When comparing C and Ge, C has a smaller radius than Ge because C is located higher in the group in the periodic table because as one goes down the group, the atomic radius increases since additional shells are added to the atoms.

The atomic radius of an atom is the distance from the nucleus to the outermost electron's valence shell. The number of protons and electrons, as well as the number of occupied shells, determines the atomic radius. Electrons are negatively charged particles that are attracted to the positively charged nucleus, which contains protons. Electrons are in constant motion, so their position cannot be predicted precisely, but the valence shell provides a reasonable estimation of their location.

Carbon (C) and germanium (Ge) are both members of Group 14 of the periodic table, which means they have four valence electrons. As a result, they have the same number of valence electrons, and their valence shells are similarly located.

Carbon is smaller than germanium because it is located higher in the group than germanium. As one goes down the group, the atomic radius increases since additional shells are added to the atoms. Therefore, C's smaller radius compared to Ge is due to the additional shells it possesses.

However, there are certain exceptions to the trend that atomic radius increases down a group and decreases across a period. For example, oxygen has a smaller radius than nitrogen because of the repulsive force between the two unpaired electrons on the same orbital.

For more such questions on Periodic table.

https://brainly.com/question/11155928#

#SPJ11

Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

If hydrochloric acid is added to a solution of HF, it will react with the HF to form H3O+ and F- ions. This reaction is a type of acid-base reaction, where the hydrochloric acid acts as the stronger acid and donates a proton to the HF, which acts as the weaker base.

The addition of hydrochloric acid will increase the concentration of H3O+ ions in the solution. This increase in the concentration of H3O+ ions will shift the equilibrium of the HF ionization reaction to the left, leading to a decrease in the percent ionization of HF. This is because the increased concentration of H3O+ ions will make it more difficult for the HF molecules to ionize and release H+ ions into the solution.

Therefore, the correct answer is that the percent ionization of HF will decrease. The Ka for HF will not change, as it is a constant value for a given temperature and is independent of the concentration of H3O+ ions in the solution.

Learn more about ionization here:

brainly.com/question/1602374

#SPJ11

Answer:

Saliva contains amylase which helps digest starch .

Explanation:

you should've googled it instead of waiting 10,000 years for someone to answer. but sometimes googling doesn't always give you the answer you want

Carbon has four valence electrons in its outer level, allowing it to form bonds with other atoms. These valence electrons can be shared with other atoms, resulting in the formation of covalent bonds. Carbon has a unique ability to form bonds with other carbon atoms, leading to the formation of long chains and complex structures.

This ability is the basis of organic chemistry, where carbon compounds are the foundation of all living organisms. For example, in the molecule methane (CH4), carbon forms four covalent bonds with four hydrogen atoms. In the molecule ethane (C2H6), two carbon atoms form a single bond between them, while each carbon atom forms three bonds with hydrogen atoms.

This ability to form multiple bonds and complex structures makes carbon essential for the diversity of organic molecules found in nature. It allows for the formation of important biomolecules such as carbohydrates, lipids, proteins, and nucleic acids.

To know more about valence electrons visit:-

https://brainly.com/question/31264554

#SPJ11

Answer:

The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases.

Explanation:

Diatomic elements are molecules composed of two atoms of the same element covalently bonded together, as opposed to other elements which are composed of only one atom.

Diatomic elements are those elements that exist in nature as molecules made up of two atoms. Examples of diatomic elements include oxygen (O2), hydrogen (H2), nitrogen (N2), fluorine (F2), chlorine (Cl2), and iodine (I2). These elements are the only elements that exist naturally as diatomic molecules.

This gives diatomic elements distinct properties compared to other elemental substances, such as having two different electron configurations, and having different spin states. Diatomic elements also have properties that are unique to them, such as having different boiling points, higher densities, and different reactivity. Additionally, diatomic elements are essential for life as many are used in crucial biochemical processes.

To know more about Diatomic elements click-

https://brainly.com/question/29078214
#SPJ4

The elements Na, Li, K, Rb, and Cs in order of increasing ionization energy is Li, Na, K, Rb, Cs. The correct answer is option D.

What is ionization energy?

The ionization energy is the minimum energy which is required to remove a valence electron from an isolated gaseous atom, molecule or a positive ion. This measures the ability of an atom to form an ion by losing an electron to take part in a chemical reaction.

As we move down the group, the ionization energy decreases due to the increase in the atomic size of an element. So, the electrons are far from the nucleus and loosely bound to the nucleus.

Therefore, it is easy to remove an electron from the elements which are found lower in the group. So, the order of increasing ionization energy is Li, Na, K, Rb, Cs, the correct answer is option D.

To learn more about ionization energy click on the given link https://brainly.com/question/20658080

#SPJ9

Answer:

The answer is Radiation

Answer:

Convectional

Explanation:

It is the movement of heat through fluid

While radiation travels though a vacuum and conduction accrues between atoms / solids

give a brainliest if it desires it plzzzz

Answer: Metals:-

1) Gold

2) Silver

3) Iron

4) Copper

5) Nickel

6) Aluminum

7)Mercury( Liquid metal)

8) Titanium

9) Radium

10) Californium

Non-metals:-

1) Diamond

2) Sulphur

3) Graphite

4) Carbon

5) Iodine

6) Tincture

7) Bromine (liquid non-metal)

8) Phosphorus

9) Silicon

10) Boron

Hope this helps..... Stay safe and have a Merry Christmas!!!!!!!! :D

Explanation:

Answer:

32.25

Explanation:

8NH3 + 3Cl2 → 6NH4Cl + N2

NH3 = 17 g/mol

number of moles = 1

NH4Cl= 43 g/mol

number of moles = 3/4

mass= 43 × ¾ ≈ 32.25 g

Answer:

40.1

Explanation:

its correct your welcome

Answer:

The average air pressure at sea level is approximately 51,181.25 hPa

Explanation:

Air pressure decreases with increasing altitude, and at a rate of about 1 hPa per 8.5 meters of elevation gain.

Therefore, to estimate the average air pressure in a hole 500 meters below sea level, we need to account for the increase in pressure due to the weight of the water column above the hole. The pressure due to the weight of a column of water is about 1 atm per 10 meters of depth.

So at a depth of 500 meters below sea level, the pressure due to the weight of the water column alone would be approximately:

(500 meters / 10 meters per atm) * 1 atm = 50 atm

Adding this to the atmospheric pressure at sea level, we can estimate the average air pressure at a depth of 500 meters below sea level as:

1013.25 hPa + (50 atm * 1013.25 hPa per atm) = 51,181.25 hPa

Therefore, the estimated average air pressure in a hole 500 meters below sea level is about 51,181.25 hPa.

Answer:

True

Explanation:

Answer:

False

Explanation:

Answer:

Explanation:

The density of water = 1 g/mL

Mass of water = 159.0 mL x 1 g/mL = 159.0 g

q = m x c x ΔT

7.84 kJ = 159.0 g x 4.184 J/g°C x ΔT

ΔT = 7.84 x 10^3 J / (159.0 g x 4.184 J/g°C)

ΔT = 11.8°C

Therefore, the temperature change is 11.9°C.

Answer:

O

Explanation:

O is in the red which says nonmetal

The energy in the bonds in glucose will be broken down and transferred to ATP molecules.

Cellular respiration is the process by which living organisms obtain energy by breaking down food molecules in their cells.

The equation for cellular respiration is as follows:

C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP

Based on the illustration using the above equation, the energy stored in the bonds of glucose molecule is broken down and used to synthesize ATP molecules.

Learn more about cellular respiration at: https://brainly.com/question/12671790

To determine the temperature at which an exothermic reaction ceases to be spontaneous, we need to calculate the Gibbs free energy change (ΔG) and use the equation ΔG = ΔH - TΔS.

Given that ΔH = -71 kJ/mol and ΔS = -58 J/K·mol, we can calculate ΔG at different temperatures to determine the temperature at which the reaction becomes non-spontaneous.

At a temperature of 0 K, ΔG = ΔH, since TΔS = 0. Thus, ΔG = -71 kJ/mol.

As the temperature increases, TΔS becomes more negative, which means that ΔG becomes more negative, making the reaction more spontaneous.

At a certain temperature, however, ΔG will become positive, which means that the reaction is no longer spontaneous and will not proceed on its own. This temperature can be found by rearranging the equation ΔG = ΔH - TΔS to T = ΔH / ΔS, and substituting the known values for ΔH and ΔS:

T = ΔH / ΔS = -71 kJ/mol / (-58 J/K·mol) = 1230 K

So, the reaction will cease to be spontaneous at a temperature of approximately 1230 K.

When the pressure is changed to 2.76 atm, is approximately 754.19 Kelvin. When the pressure inside the steel bottle is changed to 2.76 atm while containing argon gas at standard temperature and pressure (STP), the final temperature of the gas will increase.

According to the ideal gas law, PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature in Kelvin. Since the volume remains constant in this case, we can rearrange the equation as P₁/T₁ = P₂/T₂, where P₁ and T₁ are the initial pressure and temperature, and P₂ and T₂ are the final pressure and temperature. Given that the initial conditions are at STP, the initial temperature is 273.15 K. If we substitute the values into the equation, we get 1 atm / 273.15 K = 2.76 atm / T₂. Solving for T₂, we find T₂ = (273.15 K) * (2.76 atm / 1 atm) ≈ 754.19 K.Therefore, the final temperature of the argon gas in the steel bottle, when the pressure is changed to 2.76 atm, is approximately 754.19 Kelvin.

For more such questions on  argon gas

https://brainly.com/question/31471581

#SPJ8

If a reaction occurs in a flask and the temperature decreases, this indicates that the reaction is exothermic. This means that the products of the reaction have less energy than the reactants, and the excess energy is released as heat.

The symbol for the change in enthalpy of a reaction is δH, where the negative sign indicates an exothermic reaction. In this case, the δH would be negative, indicating that heat is released by the system. It is important to note that the magnitude of the temperature change does not necessarily indicate the magnitude of the δH, as the heat capacity of the flask and surrounding environment can also play a role in the temperature change.

When a reaction occurs in a flask and you observe that the flask gets colder, it indicates an endothermic reaction. In an endothermic reaction, the system absorbs energy from its surroundings, causing a decrease in temperature. The sign of ΔH (change in enthalpy) for endothermic reactions is positive, as the system gains heat from its environment. Therefore, in this case, the sign of ΔH is positive.

To know about Temperature visit:

https://brainly.com/question/7510619

#SPJ11