What molecular features are required for soap to properly dissolve grease and oil?

To make a 50.0 mL solution of 1.7 M sodium carbonate (Na₂CO3), we need to determine the mass of Na₂CO3 required.

To calculate the mass of Na₂CO3 needed, we can use the formula:

Mass = Concentration x Volume x Molar Mass

First, we convert the given volume from milliliters to liters:

Volume = 50.0 mL = 50.0/1000 L = 0.05 L

Next, we substitute the given concentration and volume values into the formula:

Mass = 1.7 M x 0.05 L x Molar Mass of Na₂CO3

The molar mass of Na₂CO3 can be calculated by adding the atomic masses of sodium (Na), carbon (C), and three oxygen (O) atoms:

Molar Mass of Na₂CO3 = (2 x Atomic Mass of Na) + Atomic Mass of C + (3 x Atomic Mass of O)

After obtaining the molar mass value, we can substitute it into the formula and perform the calculation to determine the mass of Na₂CO3 required to make the 50.0 mL solution of 1.7 M sodium carbonate.

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Main answer: The low yield of primary amine in the reaction of an alkyl halide with ammonia is due to the formation of secondary and tertiary amines via nucleophilic substitution reactions.

Explanation: In the reaction of an alkyl halide with ammonia, the nitrogen atom of ammonia acts as a nucleophile and attacks the carbon atom of the alkyl halide. This results in the formation of a primary amine, as the nitrogen atom is attached to only one alkyl group. However, the reaction is not very efficient in producing primary amines because the nitrogen atom can also react with the alkyl halide to form secondary and tertiary amines. Secondary amines have two alkyl groups attached to the nitrogen atom, while tertiary amines have three alkyl groups attached. Since secondary and tertiary amines can also form in this reaction, the yield of primary amines is reduced. The formation of secondary and tertiary amines occurs due to steric hindrance or the availability of more electrophilic carbons, which can undergo a second nucleophilic attack.

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Answer:

15 because it is the closest

Explanation:

Answer:

Its B

Explanation:

Answer:

electron loses energy as it transitions to lower energy level

Explanation:

An atom is capable of absorbing and releasing electrons. The atom of a substance is said to be at its GROUND LEVEL STATE when it contains the lowest energy level. However, when it absorbs or takes in energy, it moves to a high energy level called EXCITED STATE. This level is unstable and hence, subject to declination.

Due to the instability of the excited state of an atom, it tends to lose the absorbed electrons and in the process of doing so, it emits or produce light. Therefore, according to this question, light is produced by an atom when the electron loses energy as it transitions to lower energy level i.e excited state to ground level state.

Answer:

0.0015 M

Explanation:

we know, M = n/V = 2.5/1000 = 0.0015 M

40 J work is done by a system on its environment when an ideal gas is maintained at a constant pressure.

The volume of the gas particles is quite small. The gasses are of similar size and do not interact with one another through intermolecular (attraction or repulsion). The motion of the air molecules is consistent with the Newtonian laws of motion. Perfect elastic conflicts occurred between gas particle pairs with no energy being lost.

Given that the effort performed by the outside environment is described as

W = PΔV

Here, we are aware of

P = 200 N/m²

ΔV = 0.2 m³

now that we will

W = PΔV

W = 200 N/m² (0.2m³)

W = 40 J

Therefore, the external atmosphere will exert 40 J of work.

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Answer:

43

a) 6.730 x 10^-4

b) 5.0 x 10^4

c) 3.010 x 10^-6  

44

a) 7050. g

b) 40000500. mg

c) 2350.0 mL

Among 1-hexane and hexane, hexane would come out as positive in the given qualitative test.

Qualitative tests are used for inorganic chemical analysis of an experiment. qualitative analysis typically measures changes in color, melting point, odor, reactivity, radioactivity, boiling point, bubble production, and precipitation

     In the given condition, hexane would come as positive in the test as it has a cyclic structure, whereas in 1-hexane there is a branch, and it would take comparatively more time to dissociate.

   Qualitative analysis is used to identify and separate cations and anions in a sample substance. Unlike quantitative analysis, which seeks to determine the quantity or amount of sample, qualitative analysis is a descriptive form of analysis for the given sample.

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Answer:

88.5914811 it depends on the water

Explanation:

what you have to do it divide the mass by the volume.

Answer:

10

Explanation:

Answer:

12

Explanation:

4x3=12

"Float" property is the css property which specifies what elements can float beside the cleared element and on which side. This will allow other elements to flow around the image on the left side, while the image stays floated to the right.

The CSS property that specifies what elements can float beside the cleared element and on which side is the "float" property. Here's a step-by-step explanation:

1. Identify the element(s) you want to float beside the cleared element.
2. Apply the CSS "float" property to these elements.
3. Set the value of the float property to "left" or "right" depending on which side you want the elements to float.

For example, if you have an image element and you want it to float on the right side of the cleared element, you would use the following CSS code:

```css
img {
 float: right;
}
```

This will allow other elements to flow around the image on the left side, while the image stays floated to the right.

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Answer:

nobel gases

Explanation:

nobel gases elements in the periodic table are least likely to combine with other elements

Answer: 0, 32 , 273

Explanation:

The freezing point of water in degree Celsius, Fahrenheit and Kelvin are in the following order;   0  , 32  , 273

The balanced reaction equation is given as;

\(2Al + 6HF(aq) ------- > 2AlF_{3} (aq) + 3H_{2} (g)\)

We know that a chemical reaction has to do with the interaction between the reactants which would lead to the formation of the products. We know that one of the rules that govern a chemical reaction is that a reaction equation would be said to be balanced if the number of the atoms of each of the elements on the reactants side is the same as the number of the atoms on the products side.

The balanced reaction equation of the reaction between solid aluminum reacting with aqueous hydrogen monofluoride to produce aqueous aluminum fluoride and hydrogen gas has been shown above.

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Answer:

The density of ozone is 4.24.

Explanation:

The relation between the relative rate of diffusion and density is given by :

\(r\propto \dfrac{1}{\sqrt d}\)

The given ratio of the relative rate of diffusion of ozone as compared to chlorine is 6:3.

Let the density of ozone is d₂.

\(\dfrac{r_1}{r_2}=\sqrt{\dfrac{d_2}{d_1}} \\\\\dfrac{6}{3}=\sqrt{\dfrac{d_2}{36}} \\\\3=\dfrac{\sqrt{d_2}}{6}\\\\d_2=\sqrt{18} \\\\d_2=4.24\)

So, the density of ozone is 4.24.

The statement that best describes the use of a chemical indicator in a titration is it must change color near the equivalence point.

Indicators are those compounds which are used in the titration process to estimate the presence of chemical entities in it.

In the titration process, indicator is added in the titration solution which changes its color when the reaction mixture goes towards the equivalence point and becomes disappear at that point.

Hence option (4) is correct.

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you have to drink a lot of water and 67890

Approximately 12.45 grams of solid silver chromate will precipitate when 150 mL of 0.500 M silver nitrate solution is added to excess potassium chromate.

To determine the number of moles of AgNO3 present in 150 mL of a 0.500 M AgNO3 solution, we can use the formula:

moles = concentration × volume

Given:

Concentration of AgNO3 solution = 0.500 M

Volume of AgNO3 solution = 150 mL

First, we need to convert the volume from milliliters (mL) to liters (L) since the concentration is given in moles per liter (M).

1 L = 1000 mL

Therefore, the volume of the AgNO3 solution in liters is:

150 mL × (1 L / 1000 mL) = 0.150 L

Now we can calculate the moles of AgNO3 using the formula:

moles = concentration × volume

moles = 0.500 M × 0.150 L

moles = 0.075 mol

So, there are 0.075 moles of AgNO3 present in 150 mL of the 0.500 M AgNO3 solution.

Now, let's proceed to determine how many grams of solid silver chromate (Ag2CrO4) will precipitate when the AgNO3 solution reacts with excess potassium chromate (K2CrO4).

From the balanced chemical equation:

2AgNO3(aq) + K2CrO4(aq) → Ag2CrO4(s) + 2KNO3(aq)

We can see that the molar ratio between AgNO3 and Ag2CrO4 is 2:1. Therefore, for every 2 moles of AgNO3, we will form 1 mole of Ag2CrO4.

Since we have 0.075 moles of AgNO3, we can calculate the moles of Ag2CrO4 formed:

moles of Ag2CrO4 = 0.075 mol / 2 = 0.0375 mol

To determine the mass of Ag2CrO4, we need to multiply the moles by its molar mass. The molar mass of Ag2CrO4 is calculated by summing the atomic masses of each element in the compound:

Ag2CrO4 = 2(Ag) + 1(Cr) + 4(O) = 2(107.87 g/mol) + 1(52.00 g/mol) + 4(16.00 g/mol) = 331.87 g/mol

mass of Ag2CrO4 = moles of Ag2CrO4 × molar mass of Ag2CrO4

mass of Ag2CrO4 = 0.0375 mol × 331.87 g/mol = 12.45 g

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Answer:

Aikens/hydrocarbons

Explanation:

because the formula of this is Cn H²n

The key reactants in the process of breaking down glucose through chemical reactions with oxygen gas are glucose and oxygen.

Glucose and oxygen are the reactants that undergo chemical changes, releasing energy in the form of ATP (adenosine triphosphate) through the breakdown of glucose molecules.

Glucose, a sugar molecule, serves as the source of energy for cells. It is a carbohydrate that undergoes a series of metabolic reactions, such as cellular respiration, to release energy stored within its chemical bonds.

Oxygen gas (O2) is required for the process of aerobic respiration. In the presence of oxygen, glucose is oxidized in a series of enzymatic reactions, ultimately resulting in the production of carbon dioxide (CO2) and water (H2O).

The overall chemical equation for this process is:

glucose + oxygen → carbon dioxide + water

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Answer:

Convection

Explanation:

Convection is steam and the condensation of vapor.

Moles of Ammonia produced : 4 moles

Given

6 mol of H₂

Required

moles of Ammonia

Solution

Reaction

N₂ + 3H₂ → 2NH₃

In chemical equations, the reaction coefficient shows the mole ratio of the reacting compound (reactants and products)

From the equation, mol ratio of H₂ : NH₃ = 3 : 2, so mol NH₃ :

= 2/3 x moles H₂

= 2/3 x 6

= 4 moles

Answer: In the sweat and urine

Explanation:

Sodium is part of body's mineral. It will easily go out or lose when we we sweat and when we urinate. They lost from the body in form of water contained sodium.

The specific heat of olive oil (2 J/g·°C) is less than that of water (4.18 J/g·°C). This indicates that olive oil requires less heat energy to raise its temperature compared to an equal mass of water.

To describe the specific heat of olive oil compared to water, we can use the given information that it takes approximately 420 J of heat to raise the temperature of 7 g of olive oil by 30°C.

The specific heat capacity of a substance is defined as the amount of heat required to raise the temperature of 1 gram of the substance by 1 degree Celsius (or Kelvin).

In this case, we can calculate the specific heat of olive oil by dividing the amount of heat (420 J) by the mass (7 g) and the temperature change (30°C):

Specific heat of olive oil = (Amount of heat)/(Mass * Temperature change)

                          = 420 J / (7 g * 30°C)

                          ≈ 2 J/g·°C

Comparing this specific heat value to the specific heat of water (which is approximately 4.18 J/g·°C), we can conclude that the specific heat of olive oil (2 J/g·°C) is less than the specific heat of water. This means that olive oil requires less heat energy to raise its temperature compared to an equal mass of water.

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How can you describe the specific heat of olive oil compared to water if it takes approximately 420 J of heat to raise the temperature of 7 g of olive oil by 30°C?

Answer:

C!

Explanation:

In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravity from clouds. The main forms of precipitation include drizzle, rain, sleet, snow, ice pellets, graupel and hail.

Answer:Precipitation is water released from clouds in the form of rain, freezing rain, sleet, snow, or hail. It is the primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth. Most precipitation falls as rain. Precipitation isn't always in the form of warm liquid. It also includes snow ,sleet ,hail ,and such.

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