For the 52nd electron must pair with one of the
electrons in the 5p orbital.

Answer:

The answer would be D they are the first group on the periodic table.

Explanation:

Answer:

diiodomethane

Explanation:

The densities of each of the liquids mentioned in the question are stated below;

CCl4- 1.59 g/cm^3

Hexane- 0.672 g/cm^3

Benzene- 0.8765 g/cm^3

Diiodomethane- 3.3 g/cm^3

Clearly, the density of diiodomethane methane is almost the same as that of the desired granular material, hence the undesired granular material having a density of 2.04 g/cm3 will float in diiodomethane thus separating the two granular materials.

Answer:

[H3O+] = 0.0440M

[OH-] = 2.27x10⁻¹³M

Explanation:

Based on the equilibrium of water:

2H2O ⇄ H3O+ + OH-

K = 1x10⁻¹⁴ = [H3O+] [OH-] (1)

We can determine [OH-] with [H3O+] or vice versa

As HCl is a strong acid, [HCl] = [H3O+]

That means:

[H3O+] = 0.0440M

And [OH-] is:

1x10⁻¹⁴ / [H3O+] = [OH-]

2.27x10⁻¹³M = [OH-]

Taking into account the definition of pH and pOH, the hydronium ion, H₃O⁺, and hydroxide ion, OH−, are 0.044 M and 2.29×10⁻¹³ M respectively.

First of all, pH is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.

The pH is defined as the negative base 10 logarithm of the activity of hydrogen ions, that is, the concentration of hydrogen ions or H₃O⁺:

pH= - log [H⁺]= - log [H₃O⁺]

Similarly, pOH is a measure of hydroxyl ions in a solution and is expressed as the logarithm of the concentration of OH⁻ ions, with the sign changed:

pOH= - log [OH⁻]

The following relationship can be established between pH and pOH:

pOH + pH= 14

In this case, you have a 0.044 M HCl.   HCl is a strong acid.

It is called strong acid, that acid that dissociates completely in solution at constant temperature and pressure. Under these conditions, the concentration of a strong acid is equal to the concentration of hydrogen ions (Hydronium or H₃O⁺). Then, in this case:

[H⁺]=  [H₃O⁺]= [HCl]= 0.044 M

Replacing in the definition of pH:

pH= -log (0.044 M)

Solving:

pH= 1.36

Considering the relationship established between pH and pOH:

pOH + 1.36= 14

pOH= 14 -1.36

pOH= 12.64

Finally, replacing in the definition of pOH:

12.64= -log [OH-]

[OH-]= 10⁻¹² ⁶⁴

[OH-]= 2.29×10⁻¹³ M

In summary, the hydronium ion, H₃O⁺, and hydroxide ion, OH−, are 0.044 M and 2.29×10⁻¹³ M respectively.

Learn more:

Answer:

because hard water is salty

Answer:

Its bread My guy. Maholo my dudes.

Explanation:

Answer:

A typical atom consists of three subatomic particles: protons, neutrons, and electrons (as seen in the helium atom below). Other particles exist as well, such as alpha and beta particles (which are discussed below). The Bohr model shows the three basic subatomic particles in a simple manner. Most of an atom's mass is in the nucleus—a small, dense area at the center of every atom, composed of nucleons. Nucleons include protons and neutrons. All the positive charge of an atom is contained in the nucleus, and originates from the protons. Neutrons are neutrally-charged. Electrons, which are negatively-charged, are located outside of the nucleus.

Explanation:

Answer:

K⁺ and HPO₄²⁻ ions are present in K₂HPO₄

Explanation:

K₂HPO₄ consist of anion and cation such as HPO₄²⁻ and  K⁺. We can see that the charge on HPO₄²⁻ is negative 2. Thus inroder to balance the charge and to neutral the compound two potassium ions are attached because the charge on one atom of potassium is K⁺.

Properties of K₂HPO₄ :

It is salt of phosphoric acid.

Its density is 2.44 g/cm³.

It is odourless compound.

It is white powder and soluble in water.

It is used in fertilizer because it provide phosphorus which is beneficial for the growth of plants.

It is also used as a additive in food.

It is inorganic compound and also used as buffering agent.

Answer:

it will increase the rate of reaction

Answer:

Option (a) is the correct answer.

Explanation:

When we increase the concentration of substances in a chemical reaction then it means there are more number of molecules present in a reaction.

Hence, when these molecules will interact with each other then there will occur more number of collisions. As a result, kinetic energy of molecules will increase and this leads to increase in rate of chemical reaction.

Thus, we can conclude that increasing the concentration of substances in a chemical reaction will increase reaction rate.

Hope this helps!

Have a great day! :))))

Answer:

1. or A

Explanation:

Answer:

1 = Melting

2 = Freezing

3 = Sublimation

4 = Deposition

5 = Condensation

6 = Boiling

Explanation:

Answer:

useful of course because u wont be able to pick up any thing

Fabric can be both useful and harmful.

Fabric can be useful for...

Fabric can be harmful in these ways...

Hope i helped!

May I have brainliest?

[tex]\huge\boxed{Thanks,\;Plip.}[/tex]

Answer:

If the earth did not tilt on its axis we would not have 4 seasons, and it would be hooall the time since when we rotate around the sun the earth with become Hot all the way around.

Explanation:

Answer:

A heating curve graphically represents the phase transitions that a substance undergoes as heat is added to it. The plateaus on the curve mark the phase changes.The second change of phase is boiling, as the temperature stays the same during the transition to gas.

Explanation:

Answer:

tetrafluoroethane

Explanation:

Its an HCFC, which are the refrigerants that destroy the ozone layer.

Answer:

Freon.

Explanation:

Brainliest plz???

Answer:

[tex]V_2=76.0mL[/tex]

Explanation:

Hello.

In this case, given the initial masses of both octane (C8H18, molar mass = 114 g/mol)) and oxygen (O2, molar mass = 32 g/mol), we can compute their moles and subsequently the total pressure via the ideal gas equation at 33 °C into the 250-mL:

[tex]n_{octane}=0.42g*\frac{1mol}{114g} =3.7x10^{-3}mol\\\\n_{oxygen}=0.24g*\frac{1mol}{32g} =7.5x10^{-3}mol\\\\n_T=7.5x10^{-3}mol+3.7x10^{-3}mol=0.0112mol\\\\P_1=\frac{n_TRT}{V_1}=\frac{0.0112mol*0.082\frac{atm*L}{mol*K}*(33+273.15)K}{0.25L}=1.1atm[/tex]

After that, via the Boyle's law, we compute the final pressure in the cylinder and piston system:

[tex]P_1V_1=P_2V_2\\\\V_2=\frac{P_1V_1}{P_2} =\frac{250mL*1.1atm}{3.7atm}\\ \\V_2=76.0mL[/tex]

Best regards!

Answer:

Options I & II

I. Smooth, muscular tube connects the mouth to the stomach

II. Muscular action in the esophagus pushes food to the stomach

Explanation:

In digestive systems, we have what we call esophagus. The process is that;

The esophagus we have is a tubular like organ which connects the mouth to the stomach. Now, when we chew food and it's soft, the food will pass through the esophagus after we have swallowed it.

The smooth muscles of the esophagus will now undergo peristalsis which is a series of wave like movements that will push the food toward the stomach.

Thus, we have seen that the esophagus is a smooth tube and that muscle action on it enables the food to be pushed down the stomach.

Thus, options I & II are correct.

Answer:

Explanation:

I think that it is frequency

Answer:

B

Explanation:

Answer:

hiiiiiiiiiiiiiiiiiiiiiiiiiiii

Answer:

The name of this unit in the measurement is called: Liter

Answer:

Ice has a very different structure than liquid water

Explanation:

the lattice arrangement allows water molecules to be more spread out than in a liquid, and, thus, ice is less dense than water.

Answer:

Ice has a different structure than water, they align themselves in a regular lattice rather than completely random in a liquid. The orientation of hydrogen bonds cause molecules to push farther apart, which lowers the density.

Answer:

[tex]MgCl_2+2NaOH\rightarrow 2NaCl+Mg(OH)_2[/tex]

Explanation:

Hello.

In this case, since aqueous magnesium chloride reacts with aqueous sodium hydroxide, a precipitate product, magnesium hydroxide is formed as well as aqueous sodium chloride as shown below:

[tex]MgCl_2+NaOH\rightarrow NaCl+Mg(OH)_2[/tex]

However, since there are two chlorine atoms at the reactants we need a 2 before NaCl on the products in order to balance it. Moreover, there one OH at the  reactants and two OH at the products, that is why we also add a 2 before NaCl as shown below:

[tex]MgCl_2+2NaOH\rightarrow 2NaCl+Mg(OH)_2[/tex]

Best regards!

Answer:

A

Explanation:

That answer is the only one that makes sense, because according to the law of pulindu, najah is polypeptide akeratin primarly b orm as

Answer:

1 g/mL

Explanation:

Density is mass divided by volume ( g/mL)

Find the mass of the water by subtracting 125g - 75g = 50g.

Then divide the mass of the water by the volume of the water: 50g/50mL = 1g/mL

Answer:

Alchemy

Explanation:

Alchemy is the believe that base metals such as a copper, lead etc can be transmuted into gold.

The alchemists were in search of a magical piece that would enable them to make gold from base metals. They called this magical stuff 'the Philosopher's Stone'.

Modern science has discovered that lead can be turned into gold,without applying the methods of alchemy. Nuclear transmutation in particle accelerators can indeed change one element into another.

Answer:

Aristotle

Explanation:

Answer: Aristotle

Explanation:

because i took the quiz

e kajajdjae no squo viboes  we eso doadks Answer:ipao han meExplanation:no

Answer:

BaI2

Explanation:

Barium gives a green flame test. When the halide test is conducted, a yellow precipitate indicates the presence of the iodide ion.

Also, BaI2 reacts with ammonium carbonate as shown below:

BaI2(aq) + (NH4)2CO3(aq) → BaCO3(s) + 2(NH4)I(aq)

The BaCO3(s) separates from the reaction system as a precipitate.

Answer:

Such individuals will be unable to digest milk.

Explanation:

Milk is a substance that contains a disaccharide sugar called LACTOSE. Lactose is a disaccharide sugar composed of glucose and galactose monomers. In order to digest the lactose sugar present in milk, an enzyme called LACTASE is needed.

Since lactase, like every other enzyme, is a protein, it is coded for by a functional gene. However, in an individual that lack functional copies of the gene encoding this lactase enzyme (protein), such individual will be unable to synthesize lactase, hence, be unable to breakdown (digest) lactose sugar in milk.

No lactase gene -> No lactase protein -> No enzyme -> No milk digestion

Answer:

Explanation:

2 H₂S(g)   +   3O₂(g)  =  2 H₂O(g)   +   2SO₂(g)

2 moles           3 moles                         2 moles

1380 g of H₂S = 1380 / 34 = 40.588 moles of H₂S

6890 g of oxygen  = 6890 / 32 = 215.31 moles of oxygen

Here H₂S is limiting reagent .

2 mole of H₂S  reacts to give 2 moles of sulfur dioxide .

40.588 moles of H₂S will react to give 40.588 moles of sulfur dioxide.

sulfur dioxide formed = 40.588 moles

= 40.588 x 64 = 2597.63 g of sulfur dioxide.

The maximum amount of sulfur dioxide is 2597.63 g of sulfur dioxide.

Since

2 H₂S(g)   +   3O₂(g)  =  2 H₂O(g)   +   2SO₂(g)

So,

2 moles           3 moles                         2 moles

Now

= 1380 g of H₂S

= 1380 / 34

= 40.588 moles of H₂S

Now

= 6890 g of oxygen

= 6890 / 32

= 215.31 moles of oxygen

Here H₂S represents limiting reagent .

2 moles of H₂S  reacts to provide 2 moles of sulfur dioxide .

Now

40.588 moles of H₂S will react to provide 40.588 moles of sulfur dioxide.

Also,

sulfur dioxide formed = 40.588 moles

So,

= 40.588 x 64

= 2597.63 g of sulfur dioxide.

Learn more about reaction here: https://brainly.com/question/21091465