Which substance is not a base?CuONaClNaHCO3CuCO3

Answer:

A

Explanation:

A compound machine is a combination of two or more simple machines.

Answer:

phosphorus

Explanation:

Activation Energy

The types of energy that are involved in a chemical reaction are : (A) Activation Energy and (B) Chemical Energy. - The energy required for a chemical reaction to take place is known as the activation energy. - If the energy is less than the activation energy, the reaction will not take place.

Answer:

B missing electron

Explanation: A simple definition of a positive ion is an electrically charged atom, or group of atoms, formed by the loss of one or more electrons. The number of protons does not change but the reduction in electrons gives the atom a positive charge.

The hydrolysis of the given acetal, H₂C(CH₃)(OCH₃)CH₃, in aqueous HCl results in the formation of two organic products: 2-methoxy-2-methylpropane and methanol.

The hydrolysis of an acetal involves the cleavage of the acetal bond and the formation of two separate organic compounds. In this case, the given acetal H₂C(CH₃)(OCH₃)CH₃ will undergo hydrolysis in aqueous HCl.

The hydrolysis of the acetal bond leads to the formation of 2-methoxy-2-methylpropane and methanol as the organic products. The structural formula for 2-methoxy-2-methylpropane can be represented as CH₃CH(OCH₃)CH₃, where the oxygen atom of the acetal is now bonded to the central carbon atom. The structural formula for methanol remains as CH₃OH.

To indicate stereochemistry, wedge/hash bond tools can be used. For example, if there is a chiral center in the acetal, the stereochemistry of the resulting products can be shown by using wedges and hashes to depict the spatial arrangement of the substituents around that chiral center.

In summary, the hydrolysis of the given acetal in aqueous HCl yields 2-methoxy-2-methylpropane and methanol as the organic products. The structural formulas for these compounds can be represented, considering the stereochemistry where applicable, using wedge/hash bond tools.

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When a chemical reaction is carried out under ideal conditions implies that the reaction conditions have been carefully chosen to promote the desired reaction while minimizing unwanted side reactions, impurities, or decomposition of the reactants or products.

The reaction is carried out at the optimal temperature: The temperature of the reaction is set to the ideal value that promotes the highest possible reaction rate without causing unwanted side reactions or decomposition of the reactants or products.

The reaction is carried out in the optimal solvent: The solvent used in the reaction is chosen to be the ideal one that can dissolve all the reactants and products, facilitate the reaction, and minimize side reactions or impurities.

The reaction is carried out in the optimal pressure: The pressure of the reaction is set to the ideal value that promotes the highest possible reaction rate without causing unwanted side reactions or decomposition of the reactants or products.

The reaction is carried out under optimal concentrations: The reactants are present in optimal concentrations that maximize the reaction rate while minimizing unwanted side reactions or impurities.

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1. Al₂O₃ is ionic.

2. SnO₂ is molecular.

3. CO₂ is molecular.

4. H₂O is molecular.

5. Fe₂O₃ is ionic.

6. Li₂O is ionic

The following oxides is ionic or molecular:

1. Al₂O₃ (aluminum oxide) is ionic because it is formed by a metal (Al) and a non-metal (O).

2. SnO₂ (tin oxide) is molecular, as it consists of a metal (Sn) and a non-metal (O).

3. CO₂ (carbon dioxide) is molecular since it is composed of two non-metals (C and O).

4. H₂O (water) is molecular as it is formed by two non-metals (H and O).

5. Fe₂O₃ (iron oxide) is ionic because it contains a metal (Fe) and a non-metal (O).

6. Li₂O (lithium oxide) is ionic as it is composed of a metal (Li) and a non-metal (O).

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put the glass lid on and turn or turn down the heat

In atomic orbital theory, covalent bonding occurs when two atoms overlap their atomic orbitals, which are regions in space where the probability of finding an electron is highest.

Atomic refers to anything that is made up of or related to atoms. Atoms are the basic building blocks of matter, and are composed of protons, neutrons, and electrons. All matter is composed of atoms, which are the smallest particles of an element that retain its chemical properties. Atomic theory states that atoms are indivisible and indestructible, and cannot be created or destroyed.

The overlapping of two or more atomic orbitals results in the formation of molecular orbitals, which are regions of high electron density between the two nuclei. Electrons in the molecular orbitals are then shared between the two atoms, forming a covalent bond. This sharing of electrons is made possible by the fact that the electrons do not actually belong to any one atom and can be found in both orbitals at the same time. This allows the electrons to be shared in a way that reduces the overall energy of the system and strengthens the bond between the atoms.

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Answer:

Action given and reaction taken

Also known as

Newton's third law of motion

Explanation:

An action will be done such as bouncing a ball on the wall

- You throw the ball (Action)

- The ball bounces back (Reaction)

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You would need 1.35 moles of barium hydroxide to prepare a 0.500 L solution with a concentration of 2.70 M.

To determine the number of moles of barium hydroxide (Ba(OH)2) needed to prepare a 0.500 L solution with a concentration of 2.70 M, we can use the formula for molarity:

Molarity (M) = Number of moles of solute / Volume of solution (in liters)

Rearranging the formula, we can calculate the number of moles of solute:

Number of moles of solute = Molarity (M) * Volume of solution (in liters)

Given that the volume of the solution is 0.500 L and the concentration is 2.70 M, we substitute these values into the formula:

Number of moles of Ba(OH)2 = 2.70 mol/L * 0.500 L

Number of moles of Ba(OH)2 = 1.35 moles

In summary, the calculation involves multiplying the molarity of the solution by the volume of the solution in liters to obtain the number of moles of the solute. In this case, a 0.500 L solution with a concentration of 2.70 M requires 1.35 moles of barium hydroxide.

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Answer:

The dissolving of the Kool-Aid powder into water is a physical change. The powder, the solute, is dissolved in water, the solute, forming a Kool-Aid solution.

Answer:

Can you add more context to what exactly the question is?

Explanation:

Answer:

shale

Explanation:

An example of clastic sedimentary rock is shale which are made up of small pieces of fragmented rocks .

They are the types of rocks which are formed as a result of accumulation of minerals or organic particles at the surface of the earth.Sedimentation is the name given to a collective process  which cause the particles to settle.

The study of sedimentary rocks is useful in civil engineering  and as important sources  of coal, fossil fuels and ores.The color of sedimentary rock is often determined by iron content  and sometimes due to the presence of organic matter.

They are classified  based on origin in to 4 types which are clastic, biochemical ,chemical and other sedimentary rocks.While based on composition they are classified as siliciclastic,carbonate ,evaporite,organic rich,siliceous ,iron-rich and phosphatic sedimentary rocks.

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Answer:

Styrene has the empirical formula CH, and there is 92.25% carbon and 7.75% hydrogen. The percentage of these parts can be used to determine the molar mass and use the molecular formula.

Explanation:

Answer:

5, the last would be incomplete

Explanation:

The first, inner cloud has 2 electrons, then 8, then 8, then 8, then 3.

Answer:

i never thought about it that way

Explanation:

your right

The mass of the cell wall, assuming the cell is spherical and the wall is a thin spherical shell, is approximately 0.91 milligrams.

To calculate the mass of the cell wall, we first need to determine the volume of the wall.

The given diameter of the cell is 0.00 μm, which means the radius (r) of the cell is half of that, so r = 0.00/2 = 0.00 μm = 0.00 nm.Now, we need to find the volume of the cell wall, which can be approximated as a thin spherical shell. The volume of a thin spherical shell can be calculated using the formula:

V = 4/3 * π * (r_outer^3 - r_inner^3)

Since the cell is spherical, the inner radius of the shell is the same as the radius of the cell (r), and the outer radius of the shell is the sum of the radius of the cell (r) and the thickness of the wall (60.0 nm). Thus, the outer radius (r_outer) of the shell is:

r_outer = r + thickness = 0.00 + 60.0 = 60.0 nm

Substituting the values into the formula, we have:

V = 4/3 * π * (60.0^3 - 0.00^3)

= 4/3 * π * (216,000 nm^3)

= 288,000 π nm^3

Next, we need to calculate the mass of the cell wall using the density of pure water. The density (ρ) is given as 1000 kg/m^3, which is equivalent to 1000 kg/1,000,000,000 nm^3 since 1 m = 1,000,000,000 nm. Thus, the mass (m) of the cell wall is:

m = ρ * V

= 1000 kg/1,000,000,000 nm^3 * 288,000 π nm^3

= 0.000288 π kg

Now, we can calculate the mass of the cell wall by substituting the value of π (pi) as 3.14159:

m = 0.000288 * 3.14159 kg

= 0.000905 kg

≈ 0.91 mg

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Answer:

salt and oil

water and salt

water and sugar

Explanation:

Possible answer could be 900 or 450.

For the given equation, the mole-to-mole ratio and volume-to-volume ratio for all the gaseous reactants and products are 1:1.

For the given equation:

CH4(g) + O2(g) → CO2(g) + H2O(g)

Reactant/Product:

CH4(g)

O2(g)

CO2(g)

H2O(g)

Mole-to-Mole Ratio:

By comparing the reactant and product coefficients, we may extract the mole-to-mole ratio from the balanced equation.

CH4(g): 1 mole

O2(g): 1 mole

CO2(g): 1 mole

H2O(g): 1 mole

All of the reactants and products have a mole-to-mole ratio of 1:1:1:1.

Ratio of Volume to Volume:

The ideal gas law, which states that under constant temperature and pressure, the volume of a gas is directly proportional to the number of moles in the gas, can be used to calculate the volume-to-volume ratio.

All gaseous reactants and products have a mole-to-mole ratio of 1:1, hence the volume-to-volume ratio will also be 1:1. As a result, the volume of drug A and substance B will be equal.

You can just take the volume of substance A as the value for substance B if you know the volume of substance A and are trying to solve for the volume of substance B. Alternatively, the quantity of substances A and Bwill be the same, given the 1:1 volume-to-volume ratio.

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Answer:

Diagram B shows the correct arrangement of electrons in the product.

Magnesium reacts with fluorine to form magnesium fluoride two electrons of magnesium are transferred to the 2 atoms of fluorine and fluorine is the most electronegative element of the periodic table. Option C is correct.

Electronegativity is the tendency or power of an atom to attract the electrons from the metals they are mostly nonmetals and want to complete their octave too.

The most electronegative elements of the periodic table are oxygen, nitrogen, and fluorine, as they are always willing to complete the octave, and fluorine will take electrons from magnesium.

Therefore, Option C is correct if the 2 atoms of fluorine and fluorine are the most electronegative element of the periodic table. Magnesium reacts with fluorine to form magnesium fluoride two electrons of magnesium are transferred.

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The temperature change is 96.9 °C

Using Q = mcΔT where Q = quantity of energy applied = 250 J, m = mass of gold = 20 g, c = specific heat capacity of gold = 0.129 J/g °C and ΔT = temperature change

Since we require the temperature change, making ΔT subject of the formula, we have

ΔT = Q/mc

substituting the values of the variables into the equation, we have

ΔT = 250 J/(20 g × 0.129 J/g °C)

ΔT = 250 J/(2.58 J/°C)

ΔT = 96.89 °C

ΔT ≅ 96.9 °C

So, the temperature change is 96.9 °C

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Answer:

Explanation:

Here, we want to calculate the initial volume of the container

Mathematically, we know that volume and pressure are inversely related. What this means is that as volume increases, pressure is expected to decrease and as pressure increases, volume is expected to decrease

A mathematical link between these two is as follows:

The above is according to Boyles' law.

The values with subscript 1 are the initial values, while the values with the subscript 2 are the final values

Thus:

V1 = ?

P1 = 1.25 atm

V2 = 1L

P2 = 3.75 atm

From the relation:

2 liters of the 80% acid solution must be added to 4 liters of the 20% acid solution to obtain a 40% acid solution.

Let's denote the number of liters of the 80% acid solution to be added as x.

To determine the amount of acid in the resulting solution, we can calculate the sum of the acids in the initial solutions and set it equal to the acid in the final solution.

The acid in the 80% solution (0.80x) added to the acid in the 20% solution (0.20 × 4 liters) should be equal to the acid in the final 40% solution (0.40 × (4 + x) liters).

This can be expressed as:

0.80x + 0.20 × 4 = 0.40 × (4 + x)

Simplifying the equation:

0.80x + 0.80 = 1.60 + 0.40x

Combining like terms:

0.80x - 0.40x = 1.60 - 0.80

Simplifying further:

0.40x = 0.80

Dividing both sides by 0.40:

x = 2

Therefore, 2 liters of the 80% acid solution must be added to 4 liters of the 20% acid solution to obtain a 40% acid solution.

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Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 2500 × 5

We have the final answer as

Hope this helps you

The empirical formula of the butene, C₄H₈ is the CH₂ . The carbon and hydrogen are in the ratio of the 1 : 2.

The molecular formula for the butene = C₄H₈

There are the 8 hydrogen atoms and the 4 carbons atoms. It is clear that the carbon and the hydrogen atom ratio is 1 : 2. so the simpler form the molecular formula that is the empirical formula is as follows :

The empirical formula of the butene = CH₂.

Therefore , in the empirical formula of the butene is in the carbon and hydrogen of the ratio of 1:2.

Thus, the CH₂ is the empirical formula of the butene.

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Answer:

Explanation:

In Combustion reaction usually occurs when a hydrocarbon reacts with oxygen to produce carbon dioxide and water. 

The change in internal energy for the reaction of oxygen difluoride with water vapor is an exothermic reaction. This means that energy is released as a result of the reaction, and the reaction proceeds with an overall decrease in energy.

The products of the reaction (hydrogen fluoride and oxygen) have a lower energy level than the reactants (oxygen difluoride and water). In general, when the products of a reaction are at a lower energy state than the reactants, an exothermic reaction is taking place. The energy released in the reaction of oxygen difluoride and water vapor is in the form of heat.

Exothermic reactions occur when the molecules in a reaction have a greater overall energy than the molecules in the reactants. This energy is released as heat, causing an overall decrease in the energy of the system. The difference between the energy levels of the reactants and products is known as the enthalpy of reaction. In this case, the enthalpy of reaction is the amount of energy released during the reaction of oxygen difluoride and water vapor.

The enthalpy of reaction for the reaction of oxygen difluoride and water vapor is -9.78 kJ/mol. This means that 9.78 kJ of energy are released for every mole of oxygen difluoride that reacts with water vapor. This energy is released in the form of heat and is what causes the reaction to proceed with an overall decrease in energy.

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