a. By referring to forces at work in the atomic nucleus, how can you
explain the radioactivity of technetium?
/2 marks

Takealot excels at providing convenience, extensive product selection, competitive pricing, and a seamless online shopping experience as its value proposition for consumers.

Convenience is a key aspect of Takealot's value proposition. As an online retailer, Takealot offers the convenience of 24/7 shopping from the comfort of one's own home.

Customers can browse a wide range of products, place orders, and have them delivered directly to their doorstep.

Takealot also offers an extensive product selection, spanning various categories such as electronics, fashion, home goods, and more.

This breadth of choices allows consumers to find and compare different products all in one place, saving them time and effort compared to traditional retailers with limited inventory.

Competitive pricing is another area where Takealot excels. By operating online, the company has lower overhead costs compared to brick-and-mortar retailers, enabling them to offer competitive prices and discounts to their customers.

The seamless online shopping experience provided by Takealot includes user-friendly interfaces, secure payment options, and efficient delivery services. This enhances customer satisfaction and convenience.

In contrast, traditional non-online retailers typically have limited operating hours, smaller product selections, and may not offer the same level of convenience and competitive pricing.

They often require customers to physically visit their stores, which can be time-consuming and may not provide the same level of ease and accessibility as online platforms like Takealot.

To know more about "Customer satisfaction " refer here:

https://brainly.com/question/32142022#

#SPJ11

Formaldehyde is a simple molecule consisting of a single central carbon atom bonded to two hydrogens, and one oxygen double bonded to the carbon.

The bonds are formed by the overlap of hybridized orbitals. The central carbon atom hybridizes by sp2 hybridization, forming three sp2 hybrid orbitals and a single unhybridized p orbital.

The two hydrogens form bonds with two of the sp2 hybrid orbitals, and the oxygen double bond is formed by the overlap of the remaining sp2 hybrid orbital on the carbon with the unhybridized 2p orbital on oxygen.

The double bond consists of one σ bond, formed by the overlap of the sp2 hybrid orbital on carbon and the 2p orbital on oxygen, and one π bond, formed by the overlap of the unhybridized p orbital on carbon and the 2p orbital on oxygen.

Learn more about hybridization:

https://brainly.com/question/28468454

#SPJ4

Answer:

See explanation

Explanation:

A reaction may be exothermic or endothermic. In an exothermic reaction, energy is given out from the reaction system. This means that energy is transferred to the surroundings and the reactants have more energy than the products.

A reaction in which energy is absorbed from the surroundings is called an endothermic reaction. In this case, the products have more energy than the reactants.

So the statement "If a reaction transfers energy to the surroundings the product molecules must have more energy than the reactants” is erroneous. The error in the statement is the part that says "...the product molecules must have more energy than the reactants”. It ought to have read, "the reactants have more energy than the products" in accordance with the explanation above.

Answer:

Explanation:

2 S-II - 12 e- → 2 SIV (oxidation)

6 O0 + 12 e- → 6 O-II (reduction)

2 HgS (s) + 3 O2 (g) → 2 HgO (s) + 2 SO2 (aq)

This is an oxidation-reduction (redox) reaction:

2 S-II - 12 e- → 2 SIV (oxidation)

6 O0 + 12 e- → 6 O-II (reduction)

HgS is a reducing agent, O2 is an oxidizing agent.

The coefficients added to Hg S, 02, Hg O and SO2 to balance this equation are 2, 3, 3,2 respectively.

A balanced equation has the same number of atoms on the reactant and product sides for each element involved in the reaction.

The balanced equation for this reaction is:

2HgS + 3O2 -------> 2HgO + 2SO2

This chemical reaction demonstrates the conservation of mass as the same number of atoms of each element appear on either side of the equation.

This means that the total mass of atoms on the reactant side of the equation will equal the total mass of atoms on the product side of the equation.

Therefore the coefficients added to Hg S, 02, Hg O and SO2 to balance this equation are 2, 3, 3,2 respectively.

Learn more about balanced equation ,here:

https://brainly.com/question/9156817

#SPJ5

Based on the information provided, if the compound has stronger hydrogen bonds than water, it suggests that the compound has a higher specific heat than water. The correct option is A.

Specific heat is a measure of how much heat energy is required to raise the temperature of a substance.

Water has a high specific heat due to its extensive hydrogen bonding, which allows it to absorb and release heat energy effectively.

If the compound being investigated has even stronger hydrogen bonds than water, it implies that it can absorb more heat energy before its temperature increases significantly.

Therefore, it can be concluded that the specific heat of this compound is higher than the specific heat of water, as it can absorb and store more heat energy per unit mass, making it more resistant to temperature changes. The correct option is A.

To know more about hydrogen bonds, refer here:

https://brainly.com/question/30885458#

#SPJ11

Answer: The correct answer is The aplastic potential energy of the spring will be two times greater than the gravitational potential energy of the object.

Explanation: The formula for Gravitational potential energy is= mgh where

m= mass

g= 9.8

h= height

On the other hand the formula for elastic potential energy is (1/2)KX^2

Where K is the spring. By changing the values of H and X, we will see elastic potential energy will remain more.

Answer:

the answer is C

Explanation:

took the test one edge

Mass number 28: Nickel.

15 neutron: Phosphorus.

The  element has a mass number of 28 and 15 neutrons is Aluminium.

         A= P +N

Now given an element with  mass number 28 and 15 neutrons, we first find the proton number

A= P +N

28= P +15

P=28-15

P=13

The proton number of an element is also the same as its atomic number,The atomic number of an element tells us the identity of that element , therefore the element with atomic number 13 is  Aluminum

Read more about mass number, protons and neutrons here: https://brainly.com/question/14140169

Answer:

Base

Explanation:

Why is Alka-Seltzer a base?

Alka-Seltzer contains sodium bicarbonate and citric acid. The sodium citrate acts as an antacid. Excess sodium bicarbonate from the Alka-Seltzer acts to neutralize base.

Iodine ions are oxidized to form iodine when the chlorine gas is bubbled in the solution of potassium iodide.

When chlorine gas is bubbled into a solution of potassium iodide, some amount of the iodide ions are oxidized and changed into iodine which leads to the formation of beautiful violet color of iodine. This colour can be seen as the iodine dissolves in the carbon tetrachloride layer.

While on the other hand, when the high concentration of chlorine is bubbled into the solution of potassium iodide, the iodine reacts and formed iodine monochloride which is ruby red so we can conclude that iodine ions are oxidized to form iodine when the chlorine gas is bubbled in the solution of potassium iodide.

Learn more about chlorine gas here: https://brainly.com/question/4607123

Learn more: https://brainly.com/question/26173122

Explanation:

they have different mass number but same atomic number

The slope of a titration curve represents the rate at which pH changes with respect to the concentration of the acid or base being titrated. The slope is steeper for stronger acids and flatter for weaker acids.

This means that for the strongest acid, a small change in concentration results in a larger change in pH compared to the weakest acid.
The relationship between pH and concentration is inversely proportional, meaning as the concentration of an acid or base increases, the pH decreases. This relationship is evident in the titration curves where the steeper slope for stronger acids indicates a faster decrease in pH with increasing concentration, while the flatter slope for weaker acids indicates a slower decrease in pH with increasing concentration.
In summary, the slope of the titration curve for the strongest acid is steeper compared to the weakest acid, indicating a faster change in pH with increasing concentration. This relationship reflects the inverse proportionality between pH and concentration, where stronger acids have lower pH values due to their higher concentrations.

learn more about titration

https://brainly.com/question/31271061

#SPJ11

Three different species of microscopic, thread-like worms are responsible for the parasitic disease lymphatic filariasis. Adult worms can only survive in the lymphatic system of humans.

Nowadays, it is indigenous to Madagascar, many Western Pacific Island countries and territories, Sub-Saharan Africa (with the exception of the southernmost region of the continent), and parts of the Caribbean. South America, India, and Southeast Asia are also infrequent regions where Bancroftian filariasis can be found. Brugman spp.

by way of mosquito bites. The mosquito aedes aegypti. When an infected Aedes species mosquito (Ae. aegypti or Ae. albopictus) bites a human, the virus that causes dengue is transmitted.

To know more about parasitic disease visit:-

brainly.com/question/20849493

#SPJ1

Answer:

Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

Explanation:

Answer:

\(N2\)

Explanation:

Because  

Molecular nitrogen (N2) is a very common chemical compound in which two nitrogen atoms are tightly bound together.

Answer : The molecular formula for this compound is C7H14

To determine the molecular formula of the compound, we need to first calculate its empirical formula using the given mass percentages of carbon and hydrogen. The mass percent of carbon in the compound is: (3.140 g / 3.742 g) x 100% = 83.9%

The mass percent of hydrogen in the compound is: (0.602 g / 3.742 g) x 100% = 16.1%. Assuming a 100 g sample of the compound, we can calculate the masses of carbon and hydrogen in the sample: Mass of carbon = 83.9 g and Mass of hydrogen = 16.1 g

Next, we need to convert these masses to moles, using the atomic masses of carbon and hydrogen:1 mol C = 12.01 g, 1 mol H = 1.008 g. Moles of carbon = 83.9 g / 12.01 g/mol = 6.983 mol, Moles of hydrogen = 16.1 g / 1.008 g/mol = 15.95 mol. Dividing each mole value by the smallest mole value, we get the following mole ratio: C:H = 6.983 / 6.983 = 1.000 : 2.285

The empirical formula for the compound is therefore CH2. To determine the molecular formula, we need to find the molecular weight of the empirical formula, and then divide the given molar mass by this value to get the molecular formula multiplier. Molecular weight of CH2 = 12.01 + 2(1.008) = 14.026 g/mol, Molecular formula multiplier = 100.2 g/mol / 14.026 g/mol = 7.146. Multiplying the empirical formula by this multiplier, we get the molecular formula: C7H14

Know more about empirical formula here:

https://brainly.com/question/14044066

#SPJ11

According to chemical equilibrium, increase in temperature and pressure pushes the equilibrium in forward direction.

Chemical equilibrium is defined as the condition which arises during the course of a reversible chemical reaction with no net change in amount of reactants and products.A reversible chemical reaction is the one wherein the products as soon as they are formed react together to produce back the reactants.

Conditions which are required for equilibrium are given by quantitative formulation.Factors which affect chemical equilibrium are change in concentration , change in pressure and temperature and presence of catalyst.

Learn more about chemical equilibrium,here:

https://brainly.com/question/4289021

#SPJ1

Cis- and trans-2-butene can both be hydrogenated to butane; thus their energies can be compared. the trans isomer releases less energy upon hydrogenation therefore cis-2-butene higher in energy.

The process of addition of hydrogen atom to another compound in the presence of catalyst such as nickel, cobalt etc. is termed as hydrogenation process.

As in trans- isomer, similar atoms or group of atoms are on opposite side. Due to which there is less repulsion between the atoms which results in more stability of trans isomer. On the other hand in cis- isomer, similar atoms or group of atoms are on same side, due to which there is more repulsion between the atoms which results in less stability of cis-isomer.

Due to more stability of trans- isomer less energy is released to add hydrogen to the trans butene as compared to cis butene for the formation of butane.

Thus we concluded that the trans isomer releases less energy than cis isomer in hydrogenation process.

learn more about hydrogenation:

https://brainly.com/question/10150087

#SPJ4

Therefore, the numerical quantity needed to convert the mass of N2H4 to moles of N2H4 is 32.06 g/mol.

To convert the number of grams of N2H4 to the number of moles of N2H4, you need to use the molar mass of N2H4. The molar mass of N2H4 is calculated by adding up the atomic masses of its constituent elements: nitrogen (N) has a molar mass of 14.01 g/mol, and hydrogen (H) has a molar mass of 1.01 g/mol.

So, the molar mass of N2H4 is 2*(14.01 g/mol) + 4*(1.01 g/mol) = 32.06 g/mol. To convert grams to moles, you divide the mass of the sample by the molar mass: 25 g / 32.06 g/mol = 0.78 moles.

To know more about moles visit:-

https://brainly.com/question/15209553

#SPJ11

ancient Greece of 400 B.C.there was a brilliant philosopher named Democritus, and he proposed the Greek word atomos, which means uncuttable. And so as he explained, all matter was eventually reducible to discrete, small particles or atomos.

Answer: Below is the answer

Explanation:

CaCO3 (s) = CaO (s) + CO2(g)

a) The CO2 will be removed. The CaCO3 mass will increase.

b) If the volume is decreased the pressure is increased in CO2.  The CaCO3 mass will decrease.

c) The Pressure will increase.

Answer:

Both A and B will be chemically unreactive

Explanation:

Answer:

C

Explanation:

Answer:

thermal shock

Explanation:

the temperatures inside the glass jar should have continued to increase over time. Internal stresses due to uneven heating. This is also known as “thermal shock”.

In general, the thicker the glass, the more prone it will be to breaking due to the immediate differences in temperature across the thickness of glass.

Borosilicate glass is more tolerant of this, as it has a higher elasticity than standard silicon glass.

You may also note that laboratory test tubes and flasks are made with thinner walls, and of borosilicate glass, when designated for heating.

Answer:

It is a Mixture

Explanation:

It's a mixture because it was a substance made from mixing other substances together. And when the magnet went over the powder, the iron  is lifted and not the sulfur. So the different parts of it can be separated by any physical means that allows the parts to seen separated

Answer:

its is a mixture

Explanation: because I did the question

Answer:

4

Explanation:

because is has the greatest volt

The atmospheric concentration of a gas depends on its emission into the atmosphere and its rates of physical, chemical and biological removal. The time to lower the concentration of the gas to 37% of its original amount is its atmospheric lifetime.

The measurements of CO2 equivalents in parts per million CO2 is termed as atmospheric concentration. The pressure exerted by the atmosphere on the gas is called atmospheric pressure.

The atmospheric lifetime of a species mainly measures the time which is require to restore equilibrium in the atmosphere that follows a sudden decrease or increase in the concentration of the species in the atmosphere.

Emission is something which can be released, emitted or discharge.

Types of emission

Thus, we concluded that the atmospheric concentration of a gas depends on its emission into the atmosphere and its rates of physical, chemical and biological removal. The time to lower the concentration of the gas to 37% of its original amount is its atmospheric lifetime.

learn more about atmospheric concentration:

https://brainly.com/question/16657469

#SPJ4

Approximately 0.22328 grams of NaOH are dissolved in 23.46 mL of the 0.238 M aqueous solution.

The number of grams of NaOH dissolved in 23.46 mL of a 0.238 M aqueous solution, we can use the formula:
moles of solute = concentration (M) × volume (L)
First, let's convert the given volume from milliliters to liters:
23.46 mL ÷ 1000 mL/L = 0.02346 L
Next, substitute the values into the formula:
moles of NaOH = 0.238 M × 0.02346 L
Now, multiply the concentration by the volume:
moles of NaOH = 0.238 × 0.02346
Calculating this gives us:
moles of NaOH ≈ 0.00558268
To convert moles to grams, we need to use the molar mass of NaOH. The molar mass of NaOH is approximately 39.997 g/mol.
Multiply the moles by the molar mass to get the mass:
grams of NaOH = 0.00558268 mol × 39.997 g/mol
Calculating this gives us:
grams of NaOH ≈ 0.22328 g

Learn more about molar mass from :

https://brainly.com/question/837939

#SPJ11

Answer:

I think the answer is distilled water...

Explanation:

The color intensity of cis and trans complexes typically varies due to the different geometries of these isomers.

Cis complexes have a square planar geometry, while trans complexes have a tetrahedral geometry. The difference in geometry causes the energy levels of the d orbitals in the metal ion to split differently, resulting in different wavelengths of light being absorbed and reflected.

As a result, cis complexes tend to absorb light in the visible range and appear colorful, while trans complexes often absorb light in the ultraviolet range and appear colorless. The exact colors and intensity of the complexes depend on the specific metal ion and ligands involved.

The color intensity of cis and trans complexes typically varies due to differences in geometry and resulting differences in absorbed and reflected wavelengths of light. Cis complexes tend to be colorful due to visible light absorption, while trans complexes often appear colorless due to ultraviolet light absorption.

To know more about color intensity, visit here :

brainly.com/question/24112205

#SPJ11