Which characteristic is not a characteristic of plastic?
A.) easy to mold
B.) good conductor of heat
C.) lightweight and durable
D.)Repels water
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One of the products of this reaction is solid tin(II) carbonate (SnCO₃).

When aqueous sodium carbonate (Na₂CO₃) reacts with aqueous tin(II) nitrate (Sn(NO₃)₂), a double-replacement reaction takes place. The balanced chemical equation for the reaction is,

Na₂CO₃(aq) + Sn(NO₃)₂(aq) → SnCO₃(s) + 2NaNO₃(aq)

In this reaction, the sodium ion and nitrate ion from the sodium carbonate and tin(II) ion and nitrate ion from the tin(II) nitrate switch places to form solid tin(II) carbonate and aqueous sodium nitrate.

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Answer:

Explanation:

\(\frac{7.8}{7.8+134} \times 100 \approx \boxed{5.5\% \text{ (to 2 sf)}}\)

MgCl2 product in the reaction forms a precipitate because it is solid an insoluble salt and not dissolve in solution and precipitate on the bottom surface of the solution.

The chemical reaction in which two ionic bond combine to form an insoluble salt in a aqueous solution is called precipitation reaction.

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Answer:

The average rate of climb in miles per minute is 8.2x10⁻⁴ miles/min.

Explanation:

The average rate can be calculated as follows:

\( \overline{v} = \frac{y_{f} - y_{0}}{t_{f} - t_{0}} \)

Where:

\(y_{0}\): is the initial height = 24976 ft

\(y_{f}\): is the final height = 29035 ft

\(t_{0}\): is the initial time = 0

\(t_{f}\): is the final time = 15 hr, 35 min = 935 min      

Then, the average rate of climb in miles per minute is:

\( \overline{v} = \frac{y_{f} - y_{0}}{t_{f} - t_{0}} \)

\( \overline{v} = \frac{29035 ft - 24976 ft}{935 min - 0} = 4.34 \frac{ft}{min}*\frac{1 mile}{5280 ft} = 8.2 \cdot 10^{-4} miles/min \)      

Therefore, the average rate of climb in miles per minute is 8.2x10⁻⁴ miles/min.

I hope it helps you!      

Answer:

80% clay 20% sand

Hope this helped <3

Answer:

B

Explanation:

Sand is much more bigger than clay meaning there are gaps between each grain of sand making it easier for water to flow into it.

Answer:

a chemical compound

Explanation:

copper(ii) chlorate is a chemical compound of the transition metal copper and the chlorate anion with basic formula cu(cio)3 and 2

The pH of the solution is approximately 4.75.This indicates that the solution is slightly acidic.

To calculate the pH of the solution, we need to determine the concentration of acetate ions and acetic acid. First, let's find the number of moles of sodium acetate:

Mass of sodium acetate = 5.60 g

Molar mass of sodium acetate (CH3COONa) = 82.03 g/mol

Number of moles of sodium acetate = 5.60 g / 82.03 g/mol = 0.068 mol

Next, we need to find the number of moles of acetic acid:

Volume of acetic acid = 15.0 mL = 0.015 L

Concentration of acetic acid = 18.5 M

Number of moles of acetic acid = 18.5 mol/L * 0.015 L = 0.278 mol

Now, we can calculate the total volume of the solution:

Total volume = 1.50 L

The total moles of acetate ions can be calculated by summing the moles of sodium acetate and acetic acid:

Total moles of acetate ions = 0.068 mol + 0.278 mol = 0.346 mol

Now, we calculate the molarity (M) of the acetate ions:

Molarity of acetate ions = Total moles of acetate ions / Total volume

= 0.346 mol / 1.50 L = 0.231 M

Since sodium acetate is a strong electrolyte, it will dissociate completely in water, providing an equal concentration of acetate ions (0.231 M). The concentration of acetic acid is 0.278 M (determined earlier).

The Henderson-Hasselbalch equation can be used to calculate the pH of the solution:

pH = pKa + log([Acetate]/[Acetic Acid])

The pKa of acetic acid is 4.76.

pH = 4.76 + log(0.231/0.278)

≈ 4.75

The pH of the solution is approximately 4.75. This indicates that the solution is slightly acidic. The calculation involved determining the concentrations of acetate ions and acetic acid in the solution and using the Henderson-Hasselbalch equation to calculate the pH.

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Answer:

kinetic energy

Explanation:

The narrower the tube, the water will rise to a greater height.

Explanation:

Capillary rise is the height to which the water rises within the tube, and decreases as the width of the tube increases.

To convert 25 g of liquid water to vapor at 100°C, we need 67.7 kJ of energy.

To change 25 g of liquid water to steam, we need to calculate the energy required for the following two processes:

Heating the water from 100°C to its boiling point at atmospheric pressure (100°C).

Vaporizing the water at its boiling point at atmospheric pressure (100°C) to steam at the same temperature.

Let's start with the first step. The specific heat capacity of water is 4.18 J/g°C, so we need:

q1 = m * c * ΔT

where

m = mass of water = 25 g

c = specific heat capacity of water = 4.18 J/g°C

ΔT = change in temperature = (100 - 0)°C = 100°C

q1 = 25 g * 4.18 J/g°C * 100°C

q1 = 10450 J

This means that we need 10450 J of energy to heat 25 g of water from 0°C to 100°C.

Now let's move on to the second step, which is vaporizing the water. The molar heat of vaporization of water is 40.6 kJ/mol.

Since we know the mass of water (25 g), we need to convert it to moles:

n = m / M

where

m = mass of water = 25 g

M = molar mass of water = 18.015 g/mol

n = 25 g / 18.015 g/mol

n = 1.387 mol

The energy required to vaporize the water is:

q2 = n * Δ\(H_v_a_p\)

where

Δ\(H_v_a_p\) = molar heat of vaporization of water = 40.6 kJ/mol

q2 = 1.387 mol * 40.6 kJ/mol

q2 = 56.3 kJ

Therefore, the total energy required to change 25 g of liquid water to steam at 100°C is the sum of q1 and q2:

q = q1 + q2

q = 10450 J + 56.3 kJ

q = 67.7 kJ

So, we need 67.7 kJ of energy to change 25 g of liquid water to steam at 100°C.

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We must take into account the following stages in order to determine the amount of energy needed to convert 25 g of liquid water into steam at 100°C: Calculate how many moles of water (H2O) are contained in 25 g.

Number of moles of H2O = mass/molar mass = 25 g / 18.015 g/mol = 1.388 mol. The molar mass of H2O is 18.015 g/mol. Determine the amount of energy needed to evaporate one mole of water. Water has a molar heat of vaporization (Hvap) of 40.6 kJ/mol. Determine the amount of energy necessary to evaporate 1.388 moles of water. 1.388 moles of water must be vaporized in order to produce 40.6 kJ/mol of energy, which equals 56.4 kJ. Hence, 56.4 kJ of energy are needed to convert 25 g of liquid water to steam at 100°C. The molar heat of vaporization for liquid water is 40.6 kj/mole.

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The high-energy bond associated with the succinyl-CoA synthetase reaction is A. acyl phosphate bond

Succinyl-CoA synthetase is an enzyme that catalyzes the conversion of succinyl-CoA to succinate, with the simultaneous synthesis of ATP or GTP from ADP or GDP, respectively. This reaction is an important step in the citric acid cycle, which is also known as the Krebs cycle or the tricarboxylic acid cycle.

The acyl phosphate bond in succinyl-CoA is a high-energy bond due to the resonance stabilization of the phosphate group, making it a favorable source of energy. When succinyl-CoA synthetase cleaves this bond, the energy released is used to phosphorylate the nucleoside diphosphate (ADP or GDP), forming a high-energy nucleoside triphosphate (ATP or GTP). Although options B, C, and D represent other types of high-energy bonds, they are not directly associated with the succinyl-CoA synthetase reaction. Therefore, the correct answer is A) acyl phosphate. So therefore the correct answer is A. Acyl phosphate bond, the high-energy bond associated with the succinyl-CoA synthetase reaction.

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Plutonium-239 undergoes alpha decay to become uranium-235. Alpha decay is a type of radioactive decay that occurs when an atomic nucleus emits an alpha particle, which is a helium-4 nucleus composed of two protons and two neutrons.

Alpha decay occurs when an alpha particle, which is a helium-4 nucleus consisting of two protons and two neutrons, is emitted from an atomic nucleus. Alpha decay results in the formation of a new nucleus with two fewer protons and two fewer neutrons than the original nucleus. This reduction in mass and charge causes the resulting nucleus to be transformed into a different element. Plutonium-239, a radioactive isotope with a half-life of 24,110 years, undergoes alpha decay to become uranium-235.

Plutonium-239 has 94 protons and 145 neutrons in its nucleus. When it undergoes alpha decay, it emits an alpha particle, which consists of two protons and two neutrons. As a result, the resulting nucleus has 92 protons and 143 neutrons, making it uranium-235. Alpha decay is an essential process in nuclear science, and it plays a critical role in nuclear fission and nuclear power generation.

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Option b-A The isotope ⁷₂H (7He) is more tightly bound than ⁵₂H (5He).

The stability of an isotope depends on its binding energy, which represents the amount of energy required to break apart the nucleus into its constituent particles. Higher binding energy indicates greater stability and tighter binding of nucleons within the nucleus.

To determine which isotope is more tightly bound, we compare their binding energies. The binding energy is related to the mass defect, which is the difference between the sum of the masses of the individual nucleons and the actual mass of the nucleus.

In this case, the atomic mass of ⁷₂H (7He) is 7.027991 u, and the atomic mass of ⁵₂H (5He) is 5.012057 u. The greater the mass defect, the more tightly bound the nucleus. Since the mass defect of ⁷₂H (7He) is greater than that of ⁵₂H (5He), it implies that ⁷₂H (7He) has a higher binding energy and is more tightly bound.

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Answer

0.50 M

Explanation

Given:

Initial volume (V1) = 500.0 mL = 0.5 L

Initial molarity (C1) = 3.0 M

Final volume (V2) = 3.0 L

Required: The final molarity (C2)

Solution

C1V1 = C2V2

C2 = C1V1/V2

C2 = (3.0 M x 0.5 L)/3.0 L

C2 = 0.50 M

Answer:

differential

Explanation:

According to openstax.org, "Gram-staining is a differential staining technique that uses a primary stain and a secondary counterstain to distinguish between gram-positive and gram-negative bacteria."

The chemical reaction is a rearrangement of atoms: In the previous postulate, Dalton proposed that chemical processes neither destroy nor generate atoms. They just rearranged the atoms. Taking our salt example again, whenever sodium combines with chlorine to form salt, both the sodium and chlorine atoms remain.

What is a chemical reaction?

A chemical reaction is a process that results in the chemical change of one set of chemical components into another.  Chemical reactions are changes that simply affect the locations of electrons in the formation and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and may typically be represented using a chemical equation. Nuclear chemistry is a branch of chemistry that studies the chemical interactions of unstable and radioactive materials in which both electronic and nuclear changes can occur.

According to the Daltons atomic theory the chemical reaction will be resulting in the rearranging of the atoms of the compound.

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The frequency of infrared radiation that has a wavelength of 9.40 × 10-5 m is 3.19 × 1012 Hz.

The formula used to determine the frequency (ν) of electromagnetic radiation is:ν = c/λ, Where ν is the frequency of the radiation, c is the speed of light in a vacuum (3.00 × 108 m/s), and λ is the wavelength of the radiation.

The frequency of infrared radiation that has a wavelength of 9.40 × 10-5 m is calculated as follows:

ν = c/λν

= 3.00 × 108 m/s / (9.40 × 10-5 m)

ν = 3.19 × 1012 Hz

Infrared radiation falls in the wavelength region of 1.00 × 10-6 to 1.00 × 10-3 meters.

It has a frequency range of 3.00 × 1014 to 3.00 × 1011 Hz.

The frequency of infrared radiation that has a wavelength of 9.40 × 10-5 m is 3.19 × 1012 Hz.

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Answer:

solid, gas

Explanation:

gasses are very low density because there is a low mass in a large volume with lots of space between atoms, solids on the other hand are very densely packed and there is very little room between atoms

Answer:

A mixture

Explanation:

Yes

Answer:

mixture fosho

Explanation:

The pH of the 1.67×10⁻² M solution of aminoethanol, knowing that aminoethanol is a weak base is 12.22

We'll begin by obtaining the hydroxide ion concentration, [OH⁻] of the solution. Details below:

Aminoethanol is a weak base. On hydrolysis it produces equal concentration of [OH⁻]

Since the concentration of the aminoethanol is 1.67×10⁻² M. Thus, the hydroxide ion concentration, [OH⁻] is 1.67×10⁻² M

Next, we shall determine the pOH of the aminoethanol solution. Details below:

pOH = -Log [OH⁻]

pOH = -Log 1.67×10⁻² M

pOH = 1.78

Finally, we shall obtain the pH of the aminoethanol solution. Details below:

pH + pOH = 14

pH + 1.78 = 14

Collect like terms

pH = 14 - 1.78

pH = 12.22

Thus, the pH of the aminoethanol solution is 12.22

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The expression for the final pressure of hydrogen at equilibrium, y, is given by y = 2 - 3x.

According to the balanced chemical equation for the synthesis of ammonia, the stoichiometric coefficient of hydrogen (H₂) is 3. This means that for every 1 mole of nitrogen (N₂), we need 3 moles of hydrogen (H₂) to form 2 moles of ammonia (NH₃).

In the equilibrium calculation table, the initial pressure of hydrogen is 2 atm. Since the stoichiometric coefficient of hydrogen is 3, the change in pressure of hydrogen during the reaction is 3x, where x represents the change in pressure of ammonia (NH₃).

The final pressure of hydrogen at equilibrium is obtained by subtracting the pressure change (3x) from the initial pressure of hydrogen (2 atm). Therefore, the final pressure of hydrogen is y = 2 - 3x.

Hence, the correct expression for the final pressure of hydrogen at equilibrium is y = 2 - 3x.

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Answer:

The molarity will be "0.26 M".

Explanation:

The given values are:

Mass,

= 2.00 g

Volume of solution,

= 100 mL

or,

= \(\frac{100}{1000}\)

= \(0.1 \ L\)

Molar mass of KCl,

= 74.5 gm

Now,

Moles of KCl will be:

=  \(\frac{Given \ mass}{Molar \ mass}\)

=  \(\frac{2}{74.5}\)

=  \(0.026\)

hence,

The molarity will be:

=  \(\frac{Moles \ of \ solute}{Volume \ of \ solution}\)

On substituting the values, we get

=  \(\frac{0.026}{0.1}\)

=  \(0.26 \ M\)

Answer:

Students have investigated what's going on in the fictional town of Westfield, they learned that the mysterious reddish-brown substance in the water is actually rust, which formed because of a chemical reaction between the iron pipes and the fertilizer substance in the water.

Explanation:

Answer:

Krypton

Explanation:

mark this brainy if correct

Answer:

A location that is humid, would most likely support a marsh ecosystem.

Explanation:

The Florida Everglades are an example of a marsh :)

"Marshes are a type of wetland ecosystem where water covers the ground for long periods of time. Marshes are dominated by herbaceous plants, such as grasses, reeds, and sedges."

Answer:

Explanation:

Chemistry deals with chemicals and Science

0.0030

0.0030 is the equilibrium constant for the reaction at this temperature.

The reaction is as follows:

N2(g)+ 3 H2(g) ⇌ 2 NH3(g)

At equilibrium, the concentrations of the different species are as follows.:

[NH3] = 0.105 M

[N2] = 1.1 M

[H2] = 1.50 M

The equilibrium constant for the reaction is given as follows:

Keq = [NH3]² / [N2] [H2]³

Keq = (0.105)² / [1.1] [1.50]³

Keq = 0.00296 or 0.0030

The equilibrium constant for the reaction at this temperature is 0.0030.

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Answer:

the answer is A

0.0030

Explanation:

Answer:

5 seconds

Explanation:

Speed x Time. So t=ds. t=51=5.

Answer:

Water is also produced alongside salt

Besides salt, water is formed as the other product when an acid reacts with an alkali. The acid-alkali reaction is a type of neutralization reaction. When an acid reacts with an alkali, they both react to form salt and water.

Salts are ionic compounds that are composed of cations and anions held together by ionic bonds. Salts have positive and negative ions that are held together by ionic bonds. They have high melting and boiling points and are crystalline solids at room temperature.

Acids are substances that produce hydrogen ions, H+ when dissolved in water. They have a sour taste and turn blue litmus paper to red.

Alkalis are bases that dissolve in water to form hydroxide ions, OH-. They are usually soluble in water and can be identified by their bitter taste and ability to turn red litmus paper blue.

When acids and alkalis react, they undergo a neutralization reaction, which results in the formation of salt and water. In this reaction, hydrogen ions (H+) from the acid and hydroxide ions (OH-) from the alkali react with each other to form water (H₂O). The remaining ions from the acid and alkali combine to form a salt.

The reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) is an example of an acid-alkali reaction.

HCl + NaOH → NaCl + H₂O

Acid + alkali → salt + water

Hence, water is the other product that is formed when an acid reacts with an alkali, apart from salt.

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