was a doctoral candidate. His professors thought his ideas were unfounded. Within a decade, the Arrhenius theory of acid-base was widely accepted and praised within the scientific world.
Arrhenius defined acids as compounds having ionizable hydrogen and bases as compounds with ionizable
A) barium.
B) hydronium.
C) hydroxide.
D) oxygen.

Acid will increase the solubility of salicylic acid in water and base will decrease the solubility of salicylic acid in water.

Salicylic acid, an organic acid, breaks down to lose a proton to the carboxylic acid functional group in an aqueous solution. An intramolecular in hydrogen bond is created when the resultant carboxylate ion () interacts intramolecularly with the hydrogen atom within the hydroxyl group (-OH). Acid will increase the solubility of salicylic acid in water and base will decrease the solubility of salicylic acid in water.

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Answer:

Honestly this is the first question I’m stumped on

Explanation:

Answer:

Plants respond directly to Earth's gravitational attraction, and also to light. Stems grow upward, or away from the center of Earth, and towards light. Roots grow downward, or towards the center of Earth, and away from light. This process turns the stem so that it once again grows upward, presumably toward the light.

Explanation:

Answer:

Cobaltous Nitride,I think so anyway.......

The formula name for \(Co_{3}N_{2}\) is cobalt(II) nitride.

In the compound \(Co_{3}N_{2}\), the Co represents the chemical symbol for cobalt, and the N represents the chemical symbol for nitrogen. The subscript numbers indicate the ratio of atoms present in the compound.

To name the compound, we determine the charge of the cobalt ion based on the ratio of cobalt and nitrogen atoms. In this case, since there are three cobalt atoms and two nitrogen atoms, each cobalt atom has a 2+ charge.

Therefore, the correct name for \(Co_{3}N_{2}\) is cobalt(II) nitride. The Roman numeral II is used to indicate the cobalt ion's charge.

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The relative molecular mass of sodium trioxonitrate, NaNO₃ is 85 g/mol.

The molecular mass of a substance is the sum of all atomic masses of all atoms in a molecule. It is measured in Dalton.

The compound is NaNO₃ and the atomic mass of all atoms are given below:

Atomic Mass of sodium (Na) = 23 g

Atomic Mass of nitrogen (N) = 14 g

Atomic Mass of oxygen (O) = 16 g

Now add the atomic masses of atoms of the molecules:

Molecular mass of = 23 +14 +16(3) = 85 g/mol.

Thus, the relative molecular mass of sodium trioxonitrate is 85 g/mol.

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Answer:

it is called land of extreme

Explanation:

Answer:

hund's rule

Explanation:

states that single electrons with the same spin must occupy each equal-energy orbital before additional electrons with opposite spins can occupy the same orbitals (electrons fill empty orbitals before they pair up).

Answer:

E = 1.89×10⁻¹⁹ J

Explanation:

Given data:

Wavelength of photon = 105 nm (105 ×10⁻⁹ m)

Energy of photon = ?

Solution:

Formula:

E = hc/λ

h = plancks constant = 6.63×10⁻³⁴ Js

c = speed of wave = 3×10⁸ m/s

by putting values,

E =  6.63×10⁻³⁴ Js ×3×10⁸ m/s / 105 ×10⁻⁹ m

E = 19.89×10⁻²⁶ J.m / 105 ×10⁻⁹ m

E = 0.189×10⁻¹⁷ J

E = 1.89×10⁻¹⁹ J

Tritiated hydrogen (3H) differs from hydrogen (1H) in that -3H has 2 more neutrons than 1H.

Tritiated hydrogen (3H) is a radioactive isotope of hydrogen that contains two additional neutrons compared to the stable isotope of hydrogen, which is hydrogen-1 (1H). The atomic nucleus of hydrogen-1 consists of a single proton and no neutrons, while tritiated hydrogen (3H) has one proton and two neutrons in its nucleus.

The addition of two neutrons in tritiated hydrogen (3H) increases its atomic mass, making it heavier than hydrogen-1 (1H). The presence of extra neutrons also affects the stability and radioactive properties of tritiated hydrogen. The unstable nature of 3H leads to its radioactive decay over time, emitting beta particles in the process.

Due to its radioactive nature, tritiated.

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If 250 mL of methane (CH4) effuses through a small hole in 48 s, the time required for the same volume of helium to pass through the hole is approximately 96 s.

The effusion rate of a gas is inversely proportional to the square root of its molar mass, according to Graham's law of effusion. In this case, we need to compare the effusion rates of methane and helium.

Since the volume is constant, we can use the ratio of their times of effusion.

Let's assume the molar mass of methane (CH4) is M1 and the molar mass of helium (He) is M2. According to Graham's law, the ratio of the effusion times is given by:

(time for methane) / (time for helium) = √(M2 / M1)

Given that the time for methane is 48 s, we need to find the time for helium. Rearranging the equation, we have:

(time for helium) = (time for methane) / √(M2 / M1)

By substituting the molar masses of methane (16.04 g/mol) and helium (4.00 g/mol), we can calculate:

(time for helium) = 48 s / √(4.00 g/mol / 16.04 g/mol)

(time for helium) = 48 s / √(0.25)

(time for helium) = 48 s / 0.5

(time for helium) = 96 s

Therefore, the time required for the same volume of helium to pass through the hole is approximately 96 seconds.

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Answer:

The correct answer is B] Feeling the grains of salt in between your fingers.

Explanation:

Evidence that matter is too small to be seen without magnification includes feeling the grains of salt in between your fingers, because the individual grains of salt are too small to be seen with the eye. Other examples of matter that is too small to be seen without magnification include atoms, molecules, and subatomic particles.

A] Feeling the heat come off the flames of a fire, C] Watching salt disappear when it dissolves in water, and D] Watching rain fall from the sky during a thunderstorm are all examples of phenomena that are caused by matter, but they do not necessarily provide evidence that matter is too small to be seen without magnification.

Answer:

Magnesium permanganate

Explanation:

Answer:

Magnesium Permanganate

Explanation:

Answer:

✖︎ Mixture←  is the right answer answer, so don't choose that....…

THE corrects answer would be MIXTURE

!!!!!!Brainliest??

EXPLANATION

✰1.  I take the quiz

✰2. The word already describe it self, mixture is a substance made by mixing other substances together.

✰a mixture is a material made up of two or more different substances which are physically combined. A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.

Answer:  FeO2

Explanation:

 1.116       g  Fe

0.480     g O

We want to compare the NUMBER of Fe and O atoms.  We only have their masses, but since the molar mass of Fe is 5 times that of O, let's multiply the grams of O by 5 to have it "catch up" to the iron in ternms of number of atoms.   If the molar masses were the same, the masses would be in direct proportion to the formula.  Since they aren't, multiply by the molar mass ratio:

(1.116 grams Fe) x 1 = 1.116 g Fe

(0.480 g O) x 5 = 2.40 g O  [Changes the O mass into a number that correlates with the number of atoms relative to iron],

If the molar masses were the same, this would be the ratio of O to Fe atoms in the compound.  Normalize to the Fe number by dividing both by 1.116:

Fe = 1

O = 2.15

Not perfect, but an empiricle formula of FeO2 makes sense.  I don't see enough information here to prove that this is also the molecular formula, but FeO2 is a valid compound.  Fe(IV)O2,

1. The empirical formula of the compound is Fe₂O₃

2. The molecular formula of the compound is Fe₂O₃

1. Determination of the empirical formula of the compound.

Fe = 1.116 g

O = 0.480 g

Divide by their molar mass

Fe = 1.116 / 56 = 0.02

O = 0.480 / 16 = 0.03

Divide by the smallest

Fe = 0.02 / 0.02 = 1

O = 0.03 / 0.02 = 1.5

Multiply by 2 to express in whole number

Fe = 1 × 2 = 2

O = 1.5 × 2 = 3

Therefore, the empirical formula of the compound is Fe₂O₃

2. Determination of the molecular formula of the compound.

Empirical formula = Fe₂O₃

Molar mass = 5 × molar mass of O₂ = 5 × 32 = 160 g/mol

Molecular formula = empirical × n = molar mass

[Fe₂O₃]n = 160

[(2×56) + (3×16]n = 160

[112 + 48]n = 160

160n = 160

Divide both side by 160

n = 160 / 160

n = 1

Molecular formula = [Fe₂O₃]n

Molecular formula = [Fe₂O₃] × 1

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Answer:

See explanation

Explanation:

There are two chemicals commonly used to test for water. They are;

CuSO4: Anhydrous CuSO4  is white in colour, when it absorbs moisture, its colour changes from white to blue.

CoCl2: Anhydrous CoCl2 is blue in colour. when it absorbs moisture, its colour changes from blue to pink.

The volume of carbon (iv) oxide measured at S.T.P. that is evolved when one mole of copper (ii) carbonate is heated to constant mass is 22.4 L.

The volume of carbon dioxide produced when one  mole of copper (ii) carbonate is heated to constant mass is given by the equation of the reaction given below;

CuCO₃ (s)  ----> CuO (s) + CO₂ (g)

The mole ratio of the reaction shown above is 1 : 1 for copper carbonate and carbon dioxide.

From the equation of the reaction, one mole of copper carbonate when heated to a constant mass produces one mole of carbon dioxide.

The volume of one mole of carbon dioxide is equal to the volume of one mole of a gas.

The volume of one mole of a gas at STP is 22.4 L

Hence the volume of carbon dioxide evolved is 22.4 L

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Answer:

1- The components in a series circuit are arranged in a single path from one end of supply to another end. However, the multiple components in a parallel circuit are arranged in multiple paths where the two end terminals of the battery.

2- In the series circuit, different voltage exists across each component in the circuit. Whereas in the parallel circuit, the same voltage exists across the multiple components in the circuit.

3- The equivalent resistance in case of a series circuit is always more than the highest value of resistance in the series connection. While the equivalent resistance in the parallel circuit is always less than any of the individual resistances in parallel combination.

4- A fault in one of the components of the series circuit causes hindrance in the operation of a complete circuit. As against fault in a single component in a parallel network do not hinder the functioning of another part of the circuit.

The detection of a fault in case of a series circuit is difficult, but it is quite easy in parallel circuits.

Having strong metallic stability makes a metal less likely to corrode.

A metal's reactivity happens because of its location in the reactivity series or the electrochemical series.

Lower in the series metals are more stable and less likely to corrode, whereas, metals tht are higher in the series metals are more reactive and more prone to corrosion.

Gold and platinum are seen as very stable metals and are resistant to corrosion. This is because they are lower in the series of metals.

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Manufacturers make vegetable oils solid or semisolid at room temperature through a process called hydrogenation. Hydrogenation involves the addition of hydrogen gas to unsaturated vegetable oils, resulting in the conversion of some of the unsaturated fats into saturated fats.

This process increases the melting point of the oil and transforms it into a solid or semisolid form.

During hydrogenation, vegetable oils are heated and mixed with a catalyst, typically a metal catalyst like nickel, in the presence of hydrogen gas. The unsaturated fats in the oil undergo a chemical reaction called hydrogenation, where the carbon-carbon double bonds in the fatty acid molecules are converted into single bonds. This saturation process reduces the overall degree of unsaturation in the oil and increases its stability and solidification properties.

The hydrogenated vegetable oils, commonly known as trans fats, have a higher melting point and are solid or semisolid at room temperature. This property makes them suitable for various food applications, such as margarine, shortening, and bakery products, where a solid or semisolid texture is desired. However, it is worth noting that the consumption of trans fats has been linked to adverse health effects, and many manufacturers are now moving towards healthier alternatives and reducing the use of hydrogenated oils in their products.

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Manufacturers make vegetable oils solid or semisolid at room temperature through a process called hydrogenation.

Hydrogenation involves adding hydrogen gas to vegetable oils in the presence of a catalyst, typically nickel or palladium. This process causes the unsaturated fats in the oils to undergo a chemical reaction, converting them into saturated fats.

Saturated fats have a higher melting point and are solid or semisolid at room temperature, unlike the liquid form of unsaturated fats. By hydrogenating vegetable oils, manufacturers can increase their stability, improve texture, and extend shelf life. This transformation allows vegetable oils to be used as margarine, shortening, or in the production of solid or semisolid food products like baked goods and spreads.

Therefore, it is important to note that hydrogenation can result in the formation of trans fats, which have been associated with negative health effects. To address this concern, many manufacturers are transitioning to alternative methods or using healthier oils in their products.

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The ATP (Available-to-Promise) for weeks 1 to 8 is the amount of inventory that a firm can commit to fulfilling customer orders within that time frame.

To calculate the ATP, you need to consider the MPS (Master Production Schedule) and the ATP calculations.

1. Start by looking at the MPS for weeks 1 to 8. The MPS represents the planned production quantities for each week.
2. Determine the beginning inventory for week 1. This is the inventory available at the start of week 1.
3. Add the MPS quantity for week 1 to the beginning inventory. This gives you the available inventory for week 1.
4. Subtract customer orders for week 1 from the available inventory. This gives you the remaining inventory after fulfilling customer orders for week 1.
5. Repeat steps 3 and 4 for each subsequent week, using the previous week's remaining inventory as the beginning inventory for the next week.
6. Continue this process until you reach week 8, calculating the available inventory and subtracting customer orders for each week.
7. The resulting values represent the ATP for weeks 1 to 8.

The ATP can fluctuate as new customer orders are received or changes are made to the MPS. Regular monitoring and adjustment of the ATP is necessary to ensure accurate order fulfillment.

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The correct option from the given statements concerning mixtures is (d) more than one correct response.

The statement (a) "The composition of a homogeneous mixture cannot vary" is incorrect as the composition of a homogeneous mixture can vary. For example, a mixture of salt and water is homogeneous and its composition can vary depending on the amount of salt and water mixed in it.

The statement (b) "A homogeneous mixture can have components present in two physical states" is correct. Homogeneous mixtures are mixtures that are uniform throughout their composition, meaning that there is no visible difference between the components of the mixture. For example, a mixture of ethanol and water is homogeneous and its components are present in two physical states (liquid and liquid).

The statement (c) "A heterogeneous mixture containing only one phase is an impossibility" is incorrect. A heterogeneous mixture is a mixture where the components are not evenly distributed and the mixture has different visible regions or phases. However, it is possible for a heterogeneous mixture to contain only one phase. For example, a mixture of oil and water is heterogeneous but can have only one phase.

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An ionic equation for the displacement reaction between copper ions and iron: Cu²⁺(aq) + Fe(s) → Cu(s) + Fe²⁺(aq)

In this chemical reaction, there is a transfer of electrons from iron (Fe) to copper (Cu).

Iron change oxidation number from 0 to +2 (loose electrons) and copper change oxidation number from +2 to 0 (gain electrons).

Oxidation half reaction: Fe⁰ → Fe²⁺ + 2e⁻.

Reduction half reaction: Cu²⁺ + 2e⁻ → Cu⁰.

Oxidation is increase of oxidation number.

Reduction is lowering oxidation number because atom gain electrons.

(aq) is an aqueous solution.

(s) is a solid, insoluble in the water.

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Answer:

Explanation:

Using the ideal gas equation as follows:

PV = nRT

Where:

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

Based on the information provided in this question;

P = 1.6atm

n = 4.4 moles

R = 0.0821 L*atm/mol*K

T = 32.9°C = 32.9 + 273 = 305.9K

V = ?

Answer:

The answer is Sulfur will accept electrons

Explanation:

Because it will most likely occur if sulfur forms an ionic bond with the elements

If sulfur forms an ionic bond with another element then the sulfur will accept electrons. Hence option A is correct.

Due to their electrostatic attraction, oppositely charged species interact via ionic bonding, a form of chemical connection.

One atom transfers electrons to another when a positively charged ion forms a connection with a negatively charged ion.

Example: NA+ and Cl- gives NaCl

Sulfur belongs to group 6A of non-metals. Its valence electrons number six. It follows the octet rule. It must acquire two electrons. Thus, it creates two single covalent connections (ionic bonds).

When sulfur receives two electrons, it is ionized itself, so it from an ion with a 2-charge.

Sulfur will accept electrons will mostly likely occur if sulfur forms an ionic bond with another element. Hence option A is correct.

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If a chemist adds a chemical to pure water and there is a 100-fold increase in the concentration of hydrogen ions then the best approximate value of new pH is 5.

When only pure water is there.

H₂O ⇌ H⁺ + OH⁻

pKw = pH + pOH

14 = pH + pH ( This is because the value of pH and pOH is same in water and we need to consider pH here.)

14 = 2pH

pH= 14/2 = 7

So, pH of pure water is 7.

Concentration of hydrogen ions in pure water can be calculated using the equation

pH = -log[H⁺]

7 = -log[H⁺]

[H+] = 10⁻⁷ M

So, the concentration of hydrogen ions in pure water is 10⁻⁷ M.

Now, the chemist added a chemical to this pure water such that there is   100- fold increase in concentration of hydrogen ions.

So, the new concentration of hydrogen ions is calculated as shown below.

[H⁺] = 100 ×10⁻⁷ M

      = 10⁻⁵ M

The new concentration of hydrogen ions is 10⁻⁵ M.

Now, the new pH can be calculated using the formula

pH  = -log[H⁺]

      = -log[10⁻⁵]

      = -×-5log[10]        

       = 5×1

       = 5

So, the new pH value = 5.

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Answer:

C Ammonia

Pure water is neutral, so pH is about 7

Vinegar is acidic, pH is around 2-3

Ammonia is alkaline, pH around 11.6

Vitamin C is also acidic, pH is around 3.5 to 6

As pH increases with how alkaline the substance is, substances with a lower pH is more acidic, while substances with a higher pH is more alkaline

the question is asking for the highest pH, so you should choose the most alkaline substance

therefore the ans is C, which is ammonia

Answer:

a) H2SO4 + 2KOH -> 2H2O + K2SO4

b) 9.809 ml

Explanation:

Number of Moles = Mass/ Molar Mass

Therefore: Mass = Number of moles * Molar Mass

--------------------------------------------

Molar mass of H2SO4:

H2= 2.02

S= 32.07

O4= 64

--------------------------------------------

H2SO4 has the molar mass of 98.09

--------------------------------------------

the Moles of H2SO4 is given to be 0.100M

Therefore:

Mass= 98.09*0.1

          = 9.809g

---------------------------------------------------

Assuming that 1 g= 1 ml, the volume of sulfuric acid is 9.809 ml.