Predict the products of the following elimination reaction, and draw the major product formed. Make sure to consider the stereochemistry of the reaction. 3-chloro-3-methylpentane reacts with sodium tertbutoxide in tertbutanol.

Answer:

Explanation:

98 gH

2

​

SO

4

​

contains1 mole of H

2

​

SO

4

​

.

1 mole of H

2

​

SO

4

​

contain=1 mole of sulphur atoms.

∴9.8 g of H

2

​

SO

4

​

contain =0.1 mol of sulphur atom.

Thus, number of sulphur-atoms =n×N

A

​

(in 9.8 g of H

2

​

SO

4

​

)

=0.1×6.023×10

23

=0.6023×10

23

.

Answer:

D. Air moves from high-pressure areas to low-pressure areas.

Explanation:

When a low-pressure area interacts with a high-pressure area, the air tries to move to balance. There is more relative energy in the higher pressure area so it moves to the lower pressure area. Movement is what creates the wind.

Answer:

D

Explanation:

A )No....high pressure is denser ( heavier)

B) No.... think about a balloon...the air inside is under pressure.... when you open it up the air goes to the low pressure room

C)  No

D )  Yes ...see explanation above in B)

Answer:

A. Compounds

Explanation:

Firstly, don't let the word "pure" confuse you; this is pretty much irrelevant to the question.

The key to answering this question lies in "substance" and "more than one type of element chemically bonded."

Something you ought to memorize is that a substance is either an element or compound. Therefore, you can eliminate choices B./C.

Next, use the part of the definition that says "more than one type of element chemically bonded" to conclude that it's a compound. Not only is this the definition of a compound, but the fact that is says more than one type of element should automatically tell you that it is different from just a regular element (Choice D.).

Answer:

\(V_2=5.32L\)

Explanation:

Hello there!

In this case, according to the given pressure, temperature and volume, it is possible for us to calculate the final volume via the combined ideal gas law:

\(\frac{P_2V_2}{T_2}=\frac{P_1V_1}{T_1}\)

In such a way, we solve for the final volume, V2, to obtain:

\(V_2=\frac{P_1V_1T_2}{T_1P_2}\)

Then, we plug in the given data to obtain:

\(V_2=\frac{1.19atm*2.3L*380K}{326K*0.60atm}\\\\V_2=5.32L\)

Regards!

According to ideal gas law ;

PV = nRT where, P refers to the pressure of the ideal gas, V is the volume of the ideal gas, n is the total amount of ideal gas that is measured in terms of moles, R is the universal gas constant, and T is the temperature.

If Volume of system is reduced to half = V/2

then; P = 2(nRT/V), Pressure will be doubled to reestablish the equilibrium.

What is Chemical equilibrium?

Chemical equilibrium, condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs. A reversible chemical reaction is one in which the products, as soon as they are formed, react to produce the original reactants.

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Answer:

B. Divergent

The rift formed in the Divegent tectonic boundary between the North America and Eurasian Plates and is located now in Iceland (Im sorry im not good at explaining)

The volume of CO₂ generated under condition of STP in the reaction :

CaCO₃   +  2HCl   ----->   CaCl₂   +   H₂O   +   CO₂ is  12.5 mL.

The reaction is given as :

CaCO₃   +  2HCl   ----->   CaCl₂   +   H₂O   +   CO₂
mass of CaCO₃  = 750 mg = 0.75 g

molarity of HCl = 0.100 M

volume of HCl = 25 mL = 0.025 L

moles of CaCO₃  = 0.75 / 100

                            = 0.0075 mol

moles of HCl = 0.100 × 0.025

                       = 0.0025 mol

here HCl is limiting reagent , formation of CO₂ depends on HCl

2 moles of HCl = 1 mole of CO₂

0.0025 mol of HCl = 0.0025 / 2

                               = 0.00125 mol

volume of CO₂ = moles / molarity

                          = 0.00125 / 0.100

                         = 0.0125 L = 12.5 mL

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The major difference between altair and the sun is their difference in mass. They differ in classifications due to variations in age with Altairs being younger compared to The Suns' maturity as well as holding an A-type categorization accredited by elevated mass quantities surpassing those of The Suns'.

While there exist detectable disparities between Altair and the Sun's physical properties respective to each other; there exists a remarkable similarity between them concerning their fundamental building blocks- chemical elements like hydrogen, helium, oxygen, carbon and nitrogen that were developed through an occurrence called nuclear fission inside star cores.

Nuclear fusion is the process by which two or more atomic nuclei come together to form extensive nucleus resulting in massive amounts of energy generation required to power the stars.

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Answer:

I believe Cobalt is a Transition Metal.

Answer:

answer is transition metal

Answer:

C. gold beads and ornaments

Explanation:

Answer:

Dana wanted to know how synthetic fibers were different from natural fibers. - Recognize a problem

Angela’s experiment proved that earthworms move away from light.- Draw conclusions

Scott said, "If acid rain affects plants in a particular lake, it might affect small animals such as crayfish, that live in the same water." - Form a hypothesis

Michael fed different diets to three groups of guinea pigs. His experiment showed that guinea pigs need vitamin C and protein in their diets- Test the hypothesis with an experiment

Kim’s experiment showed that chicken egg shells were stronger when she gave the hen food to which extra calcium had been added- Draw conclusions

Explanation:

The scientific method involves observation of phenomena, this is called observation. This leads to the second stage called formulation of hypothesis, an intelligent, informed guess in put toward to explain observed phenomena. The hypothesis is now subjected to experiments to establish cause and effect relationship between variables. From the results of the experiment, conclusions are drawn.

The statements above fall into one processes in the scientific method as has been clearly shown above.

The species H30* and OH are also present in the beaker along with the water molecule, making option a correct. In contrast, a beaker of acidic solution raises [OH-] over [H30+1].

To determine  acidic solution is, the pH is an important parameter. The pH determines how many hydrogen ions are present in the solution. The pH of 7 distinguishes between neutral and acidic solutions. The pH scale displays basic solutions above 7, and acidic ones below 7. Chemical bonds, also known as attractive forces, hold two or more atoms together to form molecules, which, depending on the context, may or may not also include ions.

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Answer: 462 g

Explanation:molar mass is M= 63.55 +2·(12.01+14.01)= 115.59 g/mol.

Mass m= n·M = 4.0 mol·115.59 g/mol= 462.36 g

The net ionic equation for the reaction between tin(IV) sulfide and nitric acid can be represented as follows: SnS2(s) + 8H+(aq) + 8NO3-(aq) → Sn4+(aq) + 2SO4^2-(aq) + 4H2O(l) + 8NO2(g).

Tin(IV) sulfide (SnS2) is a compound consisting of tin ions (Sn4+) and sulfide ions (S^2-). Nitric acid (HNO3) is a strong acid that dissociates into hydrogen ions (H+) and nitrate ions (NO3-). When tin(IV) sulfide reacts with nitric acid, the tin ions from SnS2 react with hydrogen ions from HNO3 to form tin(IV) ions (Sn4+). The sulfide ions (S^2-) combine with hydrogen ions to form water (H2O), and the nitrate ions (NO3-) remain unchanged.

The net ionic equation represents only the species directly involved in the reaction and excludes spectator ions, which do not undergo any chemical change. In this case, the spectator ions are the nitrate ions (NO3-) from the nitric acid. Therefore, they are omitted from the net ionic equation. The equation can be balanced by ensuring that the number of atoms of each element is the same on both sides. Finally, the resulting balanced net ionic equation for the reaction between tin(IV) sulfide and nitric acid is:

SnS2(s) + 8H+(aq) + 8NO3-(aq) → Sn4+(aq) + 2SO4^2-(aq) + 4H2O(l) + 8NO2(g).

This equation shows the overall chemical change that occurs during the reaction, indicating the reactants on the left side and the products on the right side.

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Answer:

b- freezing water

Explanation:

Solid<liquid<gas is the general rule for entropy increase

Freezing water would change the phase from liquid to solid which would lead to less entropy

Q.2.1 With the use of examples applicable to the case study, explain human resource forecasting. Human resource forecasting refers to the process of estimating and planning for the future staffing needs of an organization.

Q.2.3 One work-study method that could be recommended for Proteco Oil's refinery is the method of time and motion study.

Q.2.1 It involves analyzing the current workforce, identifying future workforce requirements, and developing strategies to meet those needs. In the case of Proteco Oil's Pressed Purity, human resource forecasting would involve predicting the number and types of employees needed to support the company's growth and expansion.

For example, as Pressed Purity expands its export operations into China and throughout the Asia Pacific region, they would need to forecast the additional human resources required to manage international logistics, distribution, and marketing. This may include hiring employees with expertise in international trade, language skills, and knowledge of the target markets. Human resource forecasting would also consider the need for additional staff at the state-of-the-art refinery in Kingaroy to handle increased production and quality control.

Q.2.2 Product differentiation refers to the process of distinguishing a product from its competitors by highlighting unique features, benefits, or characteristics. In the context of Pressed Purity, product differentiation is evident in several aspects of their offerings.

One example of product differentiation is their focus on being 100% Australian. This sets them apart from other oil manufacturers in Australia who may rely on imported ingredients. By promoting their Australian origin, Pressed Purity appeals to consumers who prioritize supporting local businesses and value the quality associated with Australian products.

Additionally, Pressed Purity emphasizes being chemical and preservative-free. This addresses the growing consumer demand for natural and healthier food options. By positioning their oils as naturally chemical-free, Pressed Purity differentiates themselves from competitors who may not have such a strong emphasis on natural and chemical-free products.

Q.2.3 One work-study method that could be recommended for Proteco Oil's refinery is the method of time and motion study. Time and motion study involves analyzing and improving work processes by observing and measuring the time required to complete specific tasks or activities.

In the context of the refinery, a time and motion study could be conducted to identify any inefficiencies or bottlenecks in the oil processing operations. This could involve observing workers as they perform tasks and measuring the time taken for each step of the process. By analyzing the data collected, the refinery management can identify areas where time can be saved, processes can be streamlined, and productivity can be improved.

For example, the time and motion study may reveal that certain equipment or machinery in the refinery is causing delays or requiring excessive manual labor. Based on these findings, the management can make informed decisions on investing in more efficient equipment or implementing process improvements to optimize productivity and reduce costs.

Q.2.4 Proteco Oil used the following criteria for market segmentation:

Demographic segmentation: The primary target audience for Pressed Purity is mostly females, aged 25-60+ years, with a contemporary cooking attitude. These consumers are health-conscious and seek natural and chemical-free options for themselves and their families. The secondary target audience includes men and women of all ages who consider themselves gourmet home chefs and are open to new tastes.

Psychographic segmentation: Pressed Purity targets consumers who prioritize natural and chemical-free products. By emphasizing the use of 100% natural ingredients and being genuinely Australian, Pressed Purity appeals to health-conscious consumers who value the quality and authenticity of the products they consume. They also cater to gourmet home chefs who are looking for unique and flavorful cooking options.

Geographic segmentation: Initially, Proteco Oil focused on the domestic market in Australia.

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Answer:

B. The reactants are compounds that react to form new compounds (the products).

Explanation:

yessirski what he said is what im doing. Thanks, guys! #BrainlyPremium

The amount of a sample of 100 grams of a radioactive isotope that would remain after 732 days would be 14.0625 grams.

Given, the Half-life of the radioactive isotope = 273 days.Time elapsed = 732 days.Initial quantity or sample = 100 grams. Let's determine how many half-lives have passed since 732 days: Number of half-lives = (time elapsed) / (half-life)= 732 / 273 ≈ 2.683

Half-life #1: After the first half-life of 273 days, the sample will be halved. Therefore, after 273 days, the quantity remaining will be 1/2 * 100g = 50g

Half-life #2: After the second half-life of 273 days, the sample will be halved again. Therefore, after 546 days, the quantity remaining will be 1/2 * 50g = 25gHalf-life #3: After the third half-life of 273 days, the sample will be halved again.

Therefore, after 819 days, the quantity remaining will be 1/2 * 25g = 12.5gHowever, the time elapsed from 819 days to 732 days is 87 days. This time interval is less than the half-life. As a result, it is critical to calculate the amount that would be left over after 732 days using a different method. Let us consider the remaining amount from 819 days (12.5g) as the new initial quantity for the remaining 87 days. The half-life of the radioactive isotope is 273 days.

Therefore, the rate of decay for each day will be: Rate of decay per day = (1/2)^(1/273)≈ 0.002540401Therefore, the amount of the sample remaining after 87 days (or 0.3195 half-lives) can be calculated using the following formula: Q = Q0(0.5)^(t/h)where Q0 is the original quantity, Q is the remaining quantity after time t, and h is the half-life of the isotope. Q = 12.5g × (0.5)^(0.3195)Q ≈ 6.5625g

Therefore, the total amount of the sample remaining after 732 days can be found by adding up the amounts of the sample remaining from each half-life: Total remaining = 50g + 25g + 6.5625gTotal remaining ≈ 81.5625 the amount of a sample of 100 grams of a radioactive isotope that would remain after 732 days would be 14.0625 grams.

After 732 days, the sample would have decayed by three half-lives (819 days) and an additional 87 days. As a result, 81.5625g of the sample will remain after 732 days. Therefore, 100g - 81.5625g = 18.4375g of the sample would have decayed in 732 days.

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The graph of P against 1/V, using 1 cm to represent 0.01 atm on the vertical axis and 1cm to represent 0.02 unit on the horizontal axis is found in the attachment.

The gas law that is in agreement with the results is Boyle's law.

Boyle's law describes the relationship between the pressure and volume of a gas at a constant temperature.

Boyle's law states that the pressure of a given amount of gas is inversely proportional to its volume.

The mathematical expression of Boyle's law is:

P1V1 = P2V2

where;

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Complete question:

b) the following result (in the table attached) were obtained at room temperature in an experiment to verify one of the gas laws using a glass syringe​

(i) Plot a graph of P against 1/v, using 1 cm to represent 0.01 atm on the vertical axis and 1cm to represent 0.02 unit on the horizontal axis.

(ii) Which of the gas laws is in agreement with the results?

Answer:

a. Due to the evolved hydrogen from potassium to water reaction being able to reach the flash point of the reaction temperature

b. Non-metal

The molecular formula is N₂O₃

Explanation:

a. The heat of the reaction between calcium and water is given as follows

Ca + 2 H₂O → H₂ +  Ca(OH)₂    ΔH = -431.15 kJ which is exothermic, Entropy = -125.29 J/K

The heat of the reaction between potassium and water is given as follows

2 k + 2 H₂O → 2 KOH  + H₂ ΔH = -393.15 kJ Entropy = 44.91 J/K

Therefore, the reaction between potassium and water occurs more vigorously than the reaction between calcium and water such that the flash point for the released hydrogen gas is reached in the case of potassium

b. The acidic oxides are oxides of metals or non-metals that react with water to produce an acid

Given the valence of the oxide which is +3, the oxide can be aluminium, Al or nitrogen, N, however, Al₂O₃ behaves both as an acid and a base, therefore, the likely candidate is nitrogen, which shows that X is a non-metal

The molecular formula is therefore;

N₂O₃

Explanation:

It belongs to the oxygen family, also called the chalcogens. It consists of the elements found in Group 16 of the periodic table and is considered among the main group elements, namely Oxygen (O), Sulfur (S), Selenium (Se), Tellurium (Te), Polonium (Po), and Livermorium (Lv). This is the answer!

Based on its application in smoke detectors, we would expect the half-life of americium-241 to be relatively long, around 400 years.

The half-life of a radioactive isotope refers to the time it takes for half of the atoms in a sample to decay. In the case of smoke detectors, the americium-241 emits radiation in the form of alpha particles. This radiation is responsible for the flow of electrons between the two electrodes. When smoke enters the detector, it interrupts the flow of electrons, triggering the alarm.

For smoke detectors to be effective and reliable, the americium-241 source needs to remain active for an extended period. A long half-life allows for a consistent and stable source of radiation. If the half-life were relatively short, around 10 days, the source would quickly lose its radioactivity, rendering the smoke detector ineffective.

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Answer:

Olivia ?? depends

Explanation:

I have the same question but if yours is different from mine than that's not the answer.                                                                                                                       Janema Olivia Michael

Trial #1  46.1 g  50.1 g 53.1 g

Trial #2 47.8 g 50.2 g 53.0 g

Trial #3 53.1 g 50.2 g 53.2 g                                                                         This is what my chart looks like and you can see Olivia's is the most consistent :)

Answer: D

Explanation:

the atom of the metal loses one electron which becomes delocalised and is attragted by the positive nucleus leading to formation of metallic bond.

E. They form because electrons can move freely between atoms

Top guy is incorrect↑

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The molality or the molal concentration of acetic acid is 0.796 molal.

The molarity of the solution is 0.763 mol/L

The density of the solution is 1.004 g/mL. Hence, the mass of 1 liter solution is 1004 g

The mass of the solute in 1 Liter 0.763 M acetic acid = 0.763 mol/L * 60 g/mol

The mass of the solute in 0.763 M acetic acid = 45.78 g

Mass of water = 1004 - 45.78 g

Mass of water = 958.22 g or 0.95822 Kg

Molality of solution = 0.763/0.95822

Molality of solution = 0.796 molal

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answer:

d) algae will grow, causing algae blooms

explanation:

changes in the environment create algae blooms. (ie. excessive use of fertilizer)

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good luck :)

i hope this helps

have a great day!

Extra fertilizer runs off the farms, into the rivers, and out into the oceans. Algae will grow, causing algae blooms. Therefore, the correct option is option D.

Any substance of either synthetic or natural origin applied to soil or plant tissues to provide plant nutrients is referred to as a fertilizer or fertiliser. It's possible to distinguish fertilizers from liming agents and other non-nutrient soil additives. There are numerous natural and man-made sources of fertilizer.

With the exception of the sporadic inclusion of supplements such rock flour for micronutrients, fertilization for the majority of modern agricultural techniques concentrates on the three basic macronutrients of nitrogen (N), phosphorous (P), plus potassium (K). Farmers recently have started to use a lot of fertilizer on farms. Extra fertilizer runs off the farms, into the rivers, and out into the oceans. Algae will grow, causing algae blooms.

Therefore, the correct option is option D.

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Answer:

Period 4

Explanation:

On the modern periodic table, potassium and calcium lie in the fourth period, Period 4.

Elements are arranged on the periodic table based on their atomic numbers or number of protons.

Answer:

C) Lipids and Carbohydrates

Explanation:

Lipids, or fats, are stored long-term for energy when an organism cannot find carbohydrates (specifically glucose), which are used as short-term energy.