Will give brainliest

Answer:

D) contains more OH– ions than H+ ions

Explanation:

Bases have high concentration of hydroxides (OH-) and acids have high concentration of (H+) ions

Like an acid the aqueous solution of a base should be option D) contains more OH– ions than H+ ions.

An aqueous solution refers to the solvent when it should be dissolved in the  liquid water. It is considered to be the solute ions or the dissolved ions also the molecules should be surrounded by the water molecules and it should be incorporated when the network of the bond should lies within the water.

Also, the base contains high  concentration of hydroxides (OH-) and acids have high concentration of (H+) ions

Hence, the option d is correct.

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The concentration of KHT in the titration, you will need to use the formula C1V1 = C2V2, where C1 is the concentration of NaOH, V1 is the volume of NaOH, C2 is the concentration of KHT, and V2 is the volume of KHT.

Titration is a common laboratory technique used to determine the concentration of a substance in a solution by reacting it with a known concentration of another substance. - In this case, KIT+ and Kt Cl are likely the substances being titrated with NaOH. - The columns labeled "Run," "svol," and "Smol" likely refer to the run number, the volume of NaOH added, and the moles of NaOH added, respectively. - The column labeled "Suol KHT (M)" likely refers to the concentration of KHT (potassium hydrogen tartrate) in the solution being titrated. - The values in the table are likely the results of calculations based on the volume and concentration of the substances used in the experiment.

Using the given data:
- Volume of NaOH (V1) = 3.30 mL (converted to L) = 0.00330 L
- Concentration of NaOH (C1) = 0.040 M
- Volume of KHT (V2) = 0.320 L
First, we will rearrange the formula to find the concentration of KHT (C2):
C2 = (C1V1) / V2
Next, we will plug in the given values:
C2 = (0.040 M * 0.00330 L) / 0.320 L
Finally, calculate the concentration of KHT (C2):
C2 ≈ 4.125 x 10^-4 M.

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The measure of the total energy radiated by a star in one second is called luminosity.

Luminosity represents the intrinsic brightness of a star and is a measure of the total power output in terms of energy. It is an important characteristic of a star that indicates its size and temperature.

Luminosity is typically expressed in units of watts or solar luminosities (the luminosity of our Sun). Flux, on the other hand, refers to the amount of energy received per unit area per unit time, and it is influenced by the distance between the star and the observer. Apparent magnitude and absolute magnitude are measures of a star's brightness as observed from Earth and at a standard distance, respectively, and they are related to luminosity but not the direct measure of energy radiated.

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Answer:

1600 mm to m = 1.6 meters

Explanation:

The volume of sucrose that has a density of 1.56g/cm³ and a mass of 72g is 46.2cm³.

The volume of a substance can be calculated by dividing the mass of the substance by its density.

Volume = mass ÷ density

According to this question, the density of sucrose, table sugar, is 1.56 g/cm³ with a mass of 72.0 g. The volume can be calculated as follows:

Volume = 72g ÷ 1.56g/cm³

Volume = 46.2cm³

Therefore, volume of sucrose that has a density of 1.56g/cm³ and a mass of 72g is 46.2cm³

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The retention factor is 0.9 if the solvent front travels a distance of 2.0 cm and the distance between the particle and the solvent front is 0.20 cm.

In a chromatography experiment, the retention factor, also referred to as the Rf value, is a measurement of how far a component moves in relation to the solvent front. It is computed as the ratio of the compound's (also known as the "spot") travel distance to the solvent front's travel distance:

Distance travelled by the spot divided by the distance travelled by the solvent front is the retention factor (Rf).

In your situation, the solvent front moved 2.0 cm, and the ion and solvent front were separated by 0.20 cm. because of this, the distance covered by the

Spot's the ion's distance travelled is calculated as follows: Spot's (the ion's) distance travelled = Spot's (the solvent front's) distance travelled - Spot's (the ion's and the solvent front's) distance apart from each other Spot's (the ion's) distance travelled = 1.8 cm

Now that we know how to compute retention factor:

Rf is the product of the spot's travel distance and the solvent front's travel distance.

Rf = 1.8/2.0 cm.

Rf = 0.9

As a result, this experiment's retention factor is 0.9.

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The correct statements describing transition metal cations are: "Transition metal cations usually have electrons in d orbitals" and "Transition metal cations often do not follow the octet rule."

Transition metal cations are ions formed when a transition metal loses one or more electrons. These cations usually have electrons in d orbitals, as the d orbitals of transition metals are easily ionized. Additionally, transition metal cations often do not follow the octet rule, as they can form stable complexes with ligands through coordination bonding.

The statement "in order to achieve a noble gas electronic configuration, transition metal cations typically have charges as high as 12" is incorrect as the charges of transition metal cations can vary and do not necessarily need to be as high as 12. The statement "for transition metals, the cation charge is typically equal to the group number" is also incorrect as the charge of transition metal cations can vary depending on the number of electrons lost.

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Answer:

Honey but Cheerios pls follow

Explanation:

The reaction between magnesium ribbon and dilute hydrochloric acid is a classic example of a single replacement reaction, which can be represented by the following chemical equation:

Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g)

In this reaction, magnesium (Mg) reacts with hydrochloric acid (HCl) to form magnesium chloride (MgCl2) and hydrogen gas (H2).

The rate of this reaction can be altered by changing the concentration of the hydrochloric acid. This is because the rate of a chemical reaction depends on the concentration of the reactants. Specifically, the rate of the reaction is proportional to the concentration of the reactants raised to some power, which is determined by the reaction's rate law.

In this reaction, the rate law can be expressed as:

Rate = k [Mg] [HCl]^x

Where k is the rate constant and x is the order of the reaction with respect to hydrochloric acid. The order of the reaction with respect to magnesium is one, since the concentration of magnesium does not change during the reaction.

When the concentration of hydrochloric acid is increased, the rate of the reaction increases because there are more hydrochloric acid molecules available to collide with magnesium atoms and react. This means that the value of x is greater than zero and the reaction is dependent on the concentration of hydrochloric acid.

Conversely, when the concentration of hydrochloric acid is decreased, the rate of the reaction decreases because there are fewer hydrochloric acid molecules available to react with magnesium. This means that the value of x is less than one and the reaction is not entirely dependent on the concentration of hydrochloric acid.

The moles would be 12 moles, 4 moles and 11.34 moles

When hydrogen gas (H2) reacts with oxygen gas (O2) to produce water (H2O), the balanced chemical equation is:

2H2 + O2 -> 2H2O

So,

For every 6 moles of H2, 12 moles of H2O will be produced

For every 2 moles of H2, 4 moles of H2O will be produced

For every 5.67 moles of H2, 11.34 moles of H2O will be produced.

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Answer:

196 grams

because ^^^ was wrong and person in comments said it was 196 and it was right

When NaOH of 4.00 g is being added with water, the mass of water required to create 2.00% of NaOH solution by mass is 196 g.

It means that the particular amount of solute in terms of percentage is present in the solute.

Given the mass of the solute, NaOH is 4.00g

Suppose the mass of water required to add is x in g.

The mass percent of the solute is

\(\dfrac{2}{100} =\dfrac{4.00}{4.00 +x }\)

x =196 g

Therefore, mass of water required to create 2.00% of NaOH solution by mass is 196 g.

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A claim about the arrangements of electrons and properties within a family of elements is described below:

Families of elements refer to elements that are found in the same group in the periodic table.

Elements that belong to the same family have the same arrangement of electrons.

The families of elements are found in the vertical columns knowns as groups. They have the same physical properties because they have the same number of e; electrons in their outermost shell.

For example, elements belonging to group 1 have one valence electron and show similarity in their chemical properties.

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A process in which a solid decomposes at room temperature to form a solid and a gas. A beaker containing this solid will feel warm to the touch as the reaction occurs.

For this process at room temperature, ΔG is negative, ΔS is positive, and ΔH is negative.

Gibbs equation helps us to predict the spontaneity of reaction on the basis of enthalpy and entropy values directly. When the reaction is exothermic, enthalpy of the system is negative making Gibbs free energy negative. Hence, we can say that all exothermic reactions are spontaneous.

Since, in this process the beaker gets heated which means the reaction is exothermic and ΔH is negative and therefore, ΔG is negative, ΔS is positive, thus  the reaction will be spontaneous.

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Answer:

ARESENIC is in the 5A category

Explanation:

edge 2020

5A (Nitrogen group) elements tend to react to gain 3 electrons to be like noble gas.

5A group known as nitrogen group. In these group elements contains nonmetals, metals, halogens, noble gases and metalloids.

These elements react with oxygen to form acidic compounds.

Configuration of 5A group: 2s2 2p3, 3s2, 3p2

Example: nitrogen, phosphorus, arsenic etc.

Actinium (Ac) atomic number = 89 (it is a silvery radioactive metallic material. Actinium-227 is extremely radioactive element).

Arsenic (Ar) atomic number = 33 (it found in many minerals usually in combination of sulfur and metals but it also found in pure elemental crystal. It is a metalloid).

Rhenium (Re) atomic number = 75 (it is found in earth crust. It is used in additive to tungsten and molybdenum-based alloys. It is very toxic to humans it may causes skin related disease).

Therefore, 5A (Nitrogen group) elements tend to react to gain 3 electrons to be like a noble gas.

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Answer:

here are some synonyms of invective are abuse, billingsgate, obloquy, and vituperation.

#Use Avogadro

Number of atoms = mol × 6×10²³

7.28 × 10²⁵ = mol × 6×10²³

mol = (7.28×10²⁵) : (6×10²³)

mol = 121.3mol

Answer:

You didn't list any choices, but these are some common acids with their conjugate bases.

Explanation:

ACID CONJUGATE BASE

phosphoric acid dihydrogen phosphate ion

H₃PO₄ H₂PO₄⁻

acetic acid acetate ion

CH₃COOH CH₃COO⁻

hydrofluoric acid fluoride ion

HF F⁻

carbonic acid hydrogen carbonate ion

H₂CO₃ HCO₃⁻

hydrosulfuric acid hydrogen sulfide ion

H₂S HS⁻

GIVEN

• 800g of H2O > 800/1000= ,0.8 Litres of water

• Concentration = 6.25 M

• Molar mass acetic acid = 60.05g/mol

2.0 mol C₆H₁₂O₆

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

1.2 × 10²⁴ molecules C₆H₁₂O₆ (glucose)

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

1.99269 mol C₆H₁₂O₆ ≈ 2.0 mol C₆H₁₂O₆

Answer:

Explanation:

7) A block of wood

has a length of 10.2

cm, a width of 6 cm

and a height of 4.1

cm. The wood has

a total mass of 179

grams. What is the

volume of the

wood and what is

the density of the

wood?

volume = L XW XH=10.2 X 6 X4.1 =250.92cm^3

DENSITY = M/V = 179gm/250.92 cm^3

=0.713 gm/cm^3

Explanation:

Given the amount of fluorine is ---- 1.25 mol.

What is the mass of given fluorine in grams?

Since

\(Number of moles =\frac{given mass of the substance}{its molecular mass}\)

To get the mass of the substance in grams, multiply the given number of moles with the molecular mass of the substance.

Hence, among the given options, the correct answer is the last option that is

Multiply the atomic mass of fluorine by 1.25.

Answer:

Multiply the atomic mass of fluorine by 1.25.

Explanation:

i got it right on the exam!! :)

Answer:

Common diatomic molecules include hydrogen (H2), nitrogen (N2), oxygen (O2), and carbon monoxide (CO). Seven elements exist as homonuclear diatomic molecules at room temperature: H2, N2, O2, F2, Cl2, Br2, and I2. The bond in a homonuclear diatomic molecule is non-polar due to the electronegativity difference of zero.

To determine the molecular formula of the compound, we need to calculate the empirical formula first.

The empirical formula gives the simplest whole number ratio of atoms present in the compound.

1. Start by assuming we have 100 grams of the compound. This assumption allows us to work with percentages as grams directly.

2. Determine the number of grams of each element in the compound based on their percentages:

  - Carbon (C): 40.0 grams

  - Hydrogen (H): 6.71 grams

  - Oxygen (O): 53.29 grams

3. Convert the grams of each element to moles by dividing by their respective atomic masses:

 - Carbon (C): 40.0 g / 12.01 g/mol = 3.33 moles

  - Hydrogen (H): 6.71 g / 1.008 g/mol = 6.65 moles

  - Oxygen (O): 53.29 g / 16.00 g/mol = 3.33 moles

4. Divide each of the moles by the smallest number of moles obtained in step 3 (in this case, 3.33 moles) to get the simplest ratio:

- Carbon (C): 3.33 moles / 3.33 moles = 1 mole

  - Hydrogen (H): 6.65 moles / 3.33 moles = 2 moles

  - Oxygen (O): 3.33 moles / 3.33 moles = 1 mole

5. Use the whole number ratio obtained in step 4 to write the empirical formula:

  - The empirical formula is CH2O.

Now, we need to find the molecular formula by determining the factor by which the empirical formula has to be multiplied to get the molecular weight.

6. Calculate the empirical formula weight by summing the atomic masses of the elements in the empirical formula:

- Carbon (C): 1 atom x 12.01 g/mol = 12.01 g/mol

  - Hydrogen (H): 2 atoms x 1.008 g/mol = 2.016 g/mol

  - Oxygen (O): 1 atom x 16.00 g/mol = 16.00 g/mol

  The empirical formula weight = 12.01 g/mol + 2.016 g/mol + 16.00 g/mol = 30.026 g/mol.

7. Divide the molecular weight of the compound (given as 60.05 amu) by the empirical formula weight (30.026 g/mol) to find the factor:

  - Factor = Molecular weight / Empirical formula weight

  - Factor = 60.05 amu / 30.026 g/mol = 1.999 ≈ 2

8. Multiply the subscripts in the empirical formula by the factor obtained in step 7 to determine the molecular formula:

  - Carbon (C): 1 x 2 = 2

  - Hydrogen (H): 2 x 2 = 4

  - Oxygen (O): 1 x 2 = 2

  The molecular formula is C2H4O2.

Therefore, the molecular formula of the compound is C2H4O2.

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The boiling-point elevation in the question is 0.152 °C.

Boiling-point elevation refers to the difference between the boiling point of a solvent in a pure state and the boiling point of the solvent in a solution. It is determined by subtracting the boiling point of the pure solvent from the boiling point of the solvent in a solution that contains a solute. Boiling point elevation depends on the molality of the solution (the concentration of the solution in moles of solute per kilogram of solvent), and the boiling-point elevation constant of the solvent (Kb).The boiling-point elevation is given by the formula:

ΔTb = Kbm

Where

ΔTb = boiling-point elevation

Kb = boiling-point elevation constant

m = molality of the solution

Therefore, we can calculate the boiling-point elevation using the formula above. In this case:

Mass of sucrose, C12H22O11 = 50.0 g

Mass of water, H2O = 500.0 g

Molar mass of sucrose, C12H22O11 = 12(12.01) + 22(1.01) + 11(16.00) = 342.3 g/mol

The number of moles of sucrose = Mass / Molar mass = 50.0 g / 342.3 g/mol= 0.146 molmolality,

m = moles of solute / kg of solvent= 0.146 mol / 0.500 kg= 0.292 mol/kg

The boiling-point elevation constant of water, Kb = 0.52 °C/m

Therefore, the boiling-point elevation is:

ΔTb = Kbm= 0.52 °C/m x 0.292 mol/kg= 0.152 °C

So, the boiling-point elevation is 0.152 °C.

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Answer:

The earlier bog bodies that were discovered in the 1600s might have not been preserved properly due to a lack of knowledge on how to preserve them or a lack of awareness of their significance. It is also possible that they might have decayed and decomposed over time and not survived till the present day. However, the bog bodies found after the late 1800s were preserved and studied extensively due to the increasing awareness and understanding of their historical and archaeological significance.

Explanation:

Hope this helped!! Have a great day/night!!

Answer:

The Density of the cube of metal is 2.675g/mL or 2675kg/mL.

Explanation:

Given the following data;

Mass of metal = 1.45kg to gram (g) = 1.45 × 1000 = 1450g

Volume of the cube of metal = 542mL

Density = ?

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the equation;

\(Density = \frac{mass}{volume}\)

Substituting into the equation, we have;

\(Density = \frac{1450}{542}\)

Density = 2.675g/mL

In kilograms, the density is 2.675 x 1000 = 2675kg/mL.

Answer:

meter or metric system

Explanation:

To find the total pressure in the tank, we need to add up the pressures of the individual gases.

Total pressure = pressure of neon + pressure of helium + pressure of argon

Total pressure = 450 kPa + 175 kPa + 210 kPa

Total pressure = 835 kPa

Therefore, the total pressure in the tank was 835 kPa.

Emerging scientific ideas are new theories or ideas that are gaining attention in the scientific community, but have not yet been fully accepted or confirmed.

Emerging ideas refer to the new and innovative ideas or theories that have yet to gain full scientific acceptance. While a scientific consensus is a view or theory that has been universally accepted and confirmed by multiple experiments or research, an emerging scientific idea is a new and unproven theory or idea that is gaining attention in the scientific community. These emerging ideas may also be referred to as scientific hypotheses. In contrast to scientific consensus, emerging scientific ideas have not yet been subjected to rigorous testing and confirmation.

They are generally proposed to explain new observations or experimental results, which have not yet been fully understood or explained by established scientific theories. Emerging scientific ideas can have the potential to challenge the current scientific consensus. If an emerging scientific idea is found to be valid, it can ultimately lead to the establishment of a new scientific consensus. For example, the emerging scientific idea of the Higgs boson particle led to the discovery of a new field in particle physics, which is now an established scientific consensus.

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