After spraying water on a waxed surface, a student notices that the water beads up to form many individual drops rather than being spread out evenly across the surface. What property of water causes it to bead up like this?
A.The high boiling point of water
B.The strong adhesion to other substances
C. The high density of liquid water
D.The ability to dissolve many other substances
E. The strong cohesion between water molecules

we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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When the reaction of  Grignard reagent reacted with methanol will yield a tertiary alcohol. Therefore, Option C tertiary alcohol is correct.

Contains a carbon-metal link, Grignard reagents are chemicals used in catalysis. They generally result from the anhydrous reaction of magnesium metal with an alkyl or aryl halide. Because of their high reactivity, Grignard reagents frequently act as nucleophiles in organic reactions.

An alkyl group from a Grignard reagent binds to the oxygen atom of methanol (CH3OH) when it interacts with the methanol, breaking the carbon-metal connection. A precursor alkoxide is created as a result. The equivalent alcohol is then produced by protonating the intermediate alkoxide.

The reaction of a Grignard reagent with methanol leads to the formation of a tertiary alcohol.

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Answer:

\(\boxed {\boxed {\sf D. \ 0.25 \ M}}\)

Explanation:

Molarity is a measure of concentration in moles per liter.

\(molarity= \frac{moles \ of \ solute}{ liters \ of \ solution}\)

The solution contains 0.75 moles of sodium chloride and has a volume of 3.0 liters.

Substitute these values into the formula.

\(molarity= \frac{ 0.75 \ mol \ NaCl}{3.0 \ L}\)

\(molarity= 0.25 \ mol \ NaCl/L\)

Molarity has the molar (M) as its unit. 1 molar is equal to 1 mole per liter.

\(molarity= 0.25 \ M \\)

The molarity of the solution is 0.25 Molar and Choice D is correct.

The reaction is endothermic since the energy level of the products have are higher than that of the reactants.

The activation energy (AE) is the energy difference between the reactants and the transition state.

The change in energy E and the energy difference between the reactants and the products

The data given is as follows:

Reactants: 0 kJ/mol

AE forward 125 kJ/mol

AE reverse: 86 kJ/mol

Products: 39 kJ/mol

The values of ΔE forward and ΔE reverse are as follows:

ΔE forward = (39 - 0) kJ/mol

ΔE forward = +39 kJ/mol

ΔE reverse = (0 - 39) kJ/mol

ΔE reverse =  -39 kJ/mol

3. Given that Ea = 154 kJ/mol and ΔE = 136 kJ/mol

AE reverse = ΔE - AE forward

E = 136 kJ/mol - 154 kJ/mol

E = -18 kJ/mol

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         Chemical equation                                           Type of reaction

            \(S_{8} +O_{2}\) → \(8SO_{2}\)                                             Combination reaction

           \(6Li + N_{2}\) → \(2 Li_{3}N\)                                          Combination reaction

   \(AgNO_{3} + KBr\) → \(AgBr + KNO_{3}\)                          Displacement reaction

          \(CaCO_{3}\) → \(CaO + CO_{2}\)                                   Decomposition reaction

   \(Mg + Pb(NO_{3})_{2}\) → \(Pb + Mg(NO_{3})_{3}\)            Double displacement reaction

Combination reaction : A binding reaction is a reaction in which two or more substances combine to form one new substance. Binding reactions are also called synthesis reactions.

Displacement reaction : A chemical reaction in which a more reactive element displaces a less reactive element from a salt solution.

Decomposition reaction : Reactions in which one compound breaks down into two or more simpler compounds are called decomposition reactions.

Double displacement reaction : A chemical reaction in which ions are exchanged between two reactants to form a new compound is called a double displacement reaction.

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Among the following, an acceptable IUPAC name for the compound is (C) 2-bromo-5-chlorobenzaldehyde.

The IUPAC nomenclature for substituted aromatic compounds requires that the name of the substituent be added as a prefix to the name of the aromatic compound. Nitrobenzene is the term given to the compound that results when a benzene ring is joined to a single nitro group, while chlorobenzene is the term given to the compound that results when chlorine is attached to the benzene ring.

        2-bromo-5-chlorobenzaldehyde

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To convert grams (g) of a substance to moles (mol), you need to divide the mass by the molar mass of the substance.

The molar mass of Be(NO2)2 can be calculated by adding the molar masses of its constituent atoms, which are:

The molar mass of Be: 9.01 g/mol

The molar mass of N: 14.01 g/mol

The molar mass of O: 16.00 g/mol (there are two oxygen atoms in the nitrite ion, NO2-)

So the molar mass of Be(NO2)2 is:

9.01 g/mol (Be) + 2(14.01 g/mol (N) + 2(16.00 g/mol (O)) = 9.01 g/mol + 28.02 g/mol + 32.00 g/mol = 69.03 g/mol

Now we can use this molar mass to convert 11.9 g of Be(NO2)2 to moles:

moles = mass/molar mass

moles = 11.9 g / 69.03 g/mol

moles ≈ 0.1727 mol

Therefore, 11.9 g of Be(NO2)2 is equivalent to approximately 0.1727 moles.

NH3 is the chemical compound produced as a product in the given balanced chemical equation.

With the formula NH3, ammonia is a nitrogen and hydrogen inorganic chemical. A Lewis base is urea. Ammonia is a colourless, extremely unpleasant gas that has a strong, suffocating stink when it is present at room temperature. It is hygroscopic and known as anhydrous ammonia in its pure state (readily absorbs moisture). Ammonia is corrosive and has alkaline qualities.

Water molecules' shared dipoles and development of hydrogen bonds with one another account for this. As a consequence, the molecules of water and ammonia are both made up of dipoles that exert significant electrostatic forces on one another.

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Answer:

The atomic size decreases with an increase in atomic number when we move from left to right.

Explanation: Hope it helps you:))))))

                      Have a great day.

Answer:

0.849 L

Explanation:

Since pressure is being held constant, you need to use the Charles' Law equation to find the final volume. The equation looks like this:

V₁ / T₁ = V₂ / T₂

In this equation, "V₁" and "T₁" represent the initial volume and temperature. "V₂" and "T₂" represent the final volume and temperature. After you plug the given values into the equation, you can simplify to find "V₂".

V₁ = 13.3 L                         V₂ = ? L

T₁ = 47 °C                          T₂ = 3 °C

V₁ / T₁ = V₂ / T₂                                    <----- Charles' Law equation

13.3 L / 47 °C = V₂ / 3°C                      <----- Insert values

0.283 = V₂ / 3 °C                                 <----- Simplify left side

0.849 = V₂                                          <----- Multiply both sides by 3 °C

The ozone layer is present in the stratosphere and protects the planet from uvb radiation.

Between 15 and 30 kilometres above the surface of the earth, the ozone layer protects ourselves and other living things from the sun's harmful UV radiation. The weakening of the ozone layer could have significant effects on the ecosystem and human health. It completely encircles the globe and shields life on earth from the sun's dangerous ultraviolet-B (UV-B) radiation. The chemical reactions between nitrogen oxides (NOX) and volatile organic compounds (VOC), often known as hydrocarbons, produce ozone.

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Answer:

it would prob be planet y

The statement "All organic compounds contain the element carbon, but not all compounds containing the element 'carbon' are organic" can be justified based on the definition and characteristics of organic compounds.

Organic compounds are compounds primarily composed of carbon and hydrogen atoms, often with other elements like oxygen, nitrogen, sulfur, and phosphorus. These compounds are typically associated with living organisms and are known for their unique properties and behavior, including the ability to form complex structures, exhibit covalent bonding, and undergo organic reactions.

On the other hand, there are compounds that contain carbon but are not classified as organic. One notable example is carbon dioxide (\(CO_{2}\)), which is a simple inorganic compound composed of carbon and oxygen. Carbon dioxide does not possess the characteristic properties of organic compounds, such as the ability to form long chains or undergo organic reactions.

Additionally, there are inorganic compounds like carbonates (such as calcium carbonate) and carbides (such as calcium carbide) that contain carbon but are not considered organic. These compounds have distinct chemical and physical properties different from those of organic compounds.

In summary, while all organic compounds contain carbon, not all compounds containing carbon are organic. The classification of a compound as organic or inorganic depends on its overall molecular structure, bonding, and characteristic properties.

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there are an infinite number of ways to synthesize an answer to a question, including the following:

Summarize the key points in a concise manner.

Provide a detailed explanation of the topic.

Use examples or analogies to illustrate the concept.

Break down the answer into smaller, more digestible pieces.

Address potential counterarguments or alternative perspectives.

Incorporate relevant statistics or data to support the answer.

Compare and contrast different aspects of the topic.

Provide historical context or a timeline of events.

Use a storytelling approach to engage the reader.

Use a Q&A format to organize the information.

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Answer:

B) A drawn bow is released, causing an arrow to fly across the field

Explanation:

Potential energy can be thought of as "potential" to do something. For eg, putting a ball on top of hill causes the ball to have the potential to roll down the hill if released. Here the ball converts the potential energy into kinetic energy (energy of motion) to roll down.

Similarly, the bow has been stretched (potential to fly if released), and when its released, it converts the potential energy into kinetic energy.

Answer:

\(5.5 \times {10}^{ - 5} \: cm\)

Explanation:

We know, that:

\(1nm \: = \: 1 \times {10}^{ - 7} \: cm \)

Now, we can make a proportion according to this:

1nm - 1×10^-7 cm

550 nm - x cm

\(x = \frac{550 \times 1 \times {10}^{ - 7} }{1} = 550 \times {10}^{ - 7} = 5.5 \times {10}^{ - 5} \: cm \: = 0.000055 \: cm\)

ANSWER

The volume of the solution is 833.3mL

EXPLANATION

Given that;

The molarity of NaCl is 3.0M

The mass of NaCl is 146.3 grams

Follow the steps below to find the volume of the solution

Step 1; Find the number of moles of solute using the below formula

Recall, that the molar mass of NaCl is 58.44 g/mol

Step 2; Find the volume of the solution using the molarity

Step 3; Convert the volume from L to mL

1mL is equivalent to 0.001L

Let x represents the volume of the solution mL

Therefore, the volume of the solution is 833.3mL

Answer:

I think it's D. Please let me know if it's wrong or right.

Explanation:

Answer:

C) 3.3 x 104 grams

Explanation:

1 mole of water contains 6.02 × 10^23 atoms

1.1 × 10^27 atoms will contain;

1.1 × 10^27 ÷ 6.02 × 10^23

= 0.1827 × 10^( 27 - 23)

= 0.1827 × 10^(4)

= 1.827 × 10³ moles of water.

To convert mole to mass in grams, we use the formula;

mole (n) = mass (m) ÷ molar mass (MM)

Molar mas of water (H2O) = 1(2) of H + 16 of O = 18g/mol

mole = mass/molar mass

1.827 × 10³ = mass / 18

mass = 1.827 × 10³ × 18

mass = 32.886 × 10³

mass = 3.286 × 10⁴

mass = 3.3 × 10⁴ grams

The flammability of natural gas ranges from 5 to 15 percent. This indicates that no combustion would take place in any mixture with a natural gas to air ratio of less than 5% or greater than 15%.

The lowest concentration of a gas at which combustion can occur is known as the LEL. A reading in%LEL measures the percentage of that LEL value. The LEL, for instance, is 5% by volume for methane. Half of that amount, or 2.5% by volume, is 50% LEL.

Divide the unknown concentration by the LEL specified in the NFPA Handbook to determine the LEL of any gas in air.

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Answer:

so so

Explanation:

this your question?? <_>

Answer:

The correct answer is 18.75 moles X.

Explanation:

We first start with the idea that we have 25.00 moles of D. Next, we must look at the relationships in the balanced equation to find that for every 4 moles of D produced, 3 moles of X are reacted (since it is given that there is excess Y and thus X is the limiting reagent). From this, we can do the following calculation:

25.00 moles D * (3 moles X/4 moles D) = 18.75 moles X

Therefore, your answer is 18.75 moles X.

Hope this helps!

The final volume of the ladybug's prison is approximately 0.4 liters.

To determine the final volume of the ladybug's prison, we can use Boyle's Law, which states that the pressure and volume of a gas are inversely proportional at constant temperature. The equation for Boyle's Law is:

P1 * V1 = P2 * V2

Where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume, respectively.

In this scenario, the initial volume (V1) is given as 0.5 L, and the initial pressure (P1) is 1 atm. The final pressure (P2) is 1.25 atm. We need to find the final volume (V2).

Plugging the given values into the equation, we have:

1 atm * 0.5 L = 1.25 atm * V2

Simplifying the equation, we find:

0.5 L = 1.25 atm * V2

Dividing both sides of the equation by 1.25 atm, we get:

0.5 L / 1.25 atm = V2

V2 ≈ 0.4 L

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The amount, in mL, of the suspension that should be given to an infant weighing 17 lb will be 1.16 mL

0.8 mL of the liquid contains 80.0 mg of the drug.

The recommended dose is 15 mg per kg of body weight

The infant to be given the drug weighs 17 lb.

First, let's convert the weight of the infant to kg.

1 lb = 453.59 g

17 lb =       453.59 x 17/1

                   = 7711.03 g

1000 g = 1 kg

7711.03 g = 7711.03 x 1/1000

               = 7.711 kg

So, the baby's weight is 7.711 kg.

The drug dose for the baby can thus be calculated as:

15 mg x 7.711 = 115.67 mg

But 0.8 mL of the drug contains only 80.0 mg. How many mL will contain 115.67 mg?

                   0.8 x 115.67/ 80.0 = 1.16 mL

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Answer::

Explanation::

The mass concentration of sand in the ethanol solution is 0.299 g/dm³.

To find the concentration in grams per cubic decimeter (g/dm³), we first need to convert the volume from liters to cubic decimeters (dm³). Since 1 liter is equal to 1 cubic decimeter, we can directly convert the volume.

Given:

Mass of sand = 0.2 g

Volume of ethanol = two-thirds liter

Converting volume to dm³:

1 liter = 1 cubic decimeter

two-thirds liter = (2/3) cubic decimeter = 0.67 dm³ (rounded to two decimal places)

Now we can calculate the concentration in g/dm³ by dividing the mass of sand by the volume in dm³:

Concentration = Mass / Volume

Concentration = 0.2 g / 0.67 dm³

Concentration ≈ 0.299 g/dm³ (rounded to three decimal places)

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Nitrogen G is a colorless, tasteless gas that is the most plentiful element in Earth's atmosphere and is a constituent of all living matter of nitrogen.

Nitrogen is an essential gaseous element with an atomic number of 7 and an atomic weight of 14.0067. Nitrogen gas has two particles of Nitrogen therefore, the molecular formula of this gas is N2. It is a non-metallic element that settled Group 15

nitrogen. [ nī′trə-jən ] N. A nonmetallic element that constructs up about 78 percent of the atmosphere by capacity, Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table

So we can conclude that Nitrogen is the chemical element with the symbol N and atomic number 7.

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Therefore, approximately 7.58 grams of HNO3 are produced from 8.30 grams of NO2.

In chemistry, a mole (mol) is a unit of measurement used to express the amount of a substance. One mole of a substance is defined as the amount of that substance that contains the same number of particles (atoms, molecules, or ions) as there are atoms in 12 grams of pure carbon-12. This number of particles is known as Avogadro's number and is approximately 6.022 x 10^23 particles per mole.

Here,

The balanced chemical equation for the reaction between nitrogen dioxide (NO2) and water (H2O) to form nitric acid (HNO3) is:

3 NO2 + H2O → 2 HNO3

This equation tells us that for every 3 moles of NO2 reacted, 2 moles of HNO3 are produced.

To determine the number of moles of NO2 in 8.30 g, we first need to calculate its molar mass:

Molar mass of NO2 = 14.01 g/mol + 2(16.00 g/mol) = 46.01 g/mol

Number of moles of NO2 = mass ÷ molar mass = 8.30 g ÷ 46.01 g/mol ≈ 0.1805 mol

From the balanced equation, we know that 3 moles of NO2 produce 2 moles of HNO3. So, the number of moles of HNO3 produced from 0.1805 mol of NO2 is:

Number of moles of HNO3 = (2/3) × 0.1805 mol = 0.1203 mol

Finally, we can use the molar mass of HNO3 to convert this number of moles into grams:

Molar mass of HNO3 = 1(1.01 g/mol) + 1(14.01 g/mol) + 3(16.00 g/mol) = 63.01 g/mol

Mass of HNO3 produced = number of moles × molar mass = 0.1203 mol × 63.01 g/mol ≈ 7.58 g

Therefore, approximately 7.58 grams of HNO3 are produced from 8.30 grams of NO2.

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