how many grams of baf2 are dissolved in 75.0 ml of a saturated solution of baf2? ksp = 1.00 x 10-6

Answer:

kingdom

Explanation:

because geiuns are in kingdom they also known as minister

Answer:

D species

Explanation:

Genus consists of structurally or phylogenetically related species

Answer:

h

Explanation:

hence co2 has a linear molecular goemetry with the bond angles of 180 degrees and symmetric distribution of electrons. CO2 Lewis structure, molecular goemetry hybridization in carbon dioxide molecule, the central carbon atom is surrounded by two areas of electrons density

When water is lost, but electrolytes are retained, the first thing that happens is that moves water from the ICF to the ECF.

The fluid inside of cells, also called the cytoplasm or cytosol, makes up about 60% of the water in the human body, totaling about 7 gallons. Organelles like the nucleus, endoplasmic reticulum, mitochondria, lysosomes, and Golgi apparatus are suspended in and supported by the ICF. Also found in the ICF are cellular building blocks like sugars, proteins, carbohydrates, and lipids.

ECFs are any body fluids that are not inside cells. The two main components of ECF are plasma and interstitial fluid (IF). The balance consists of cerebrospinal fluid, lymph, the synovial fluid in the joints, pleural fluid in the pleural cavities (lungs), pericardial fluid around the heart, peritoneal fluid in the peritoneal cavity (abdomen), and the aqueous humor of the eye. In mammals, milk is also considered an extracellular fluid.

The ICF has higher amounts of potassium, phosphate, magnesium, and protein compared to the ECF. The plasma has high concentrations of sodium, chloride, and bicarbonate, but lower levels of protein as compared to the ICF. While water moves passively via osmosis, sodium and potassium ions move in and out of cells using active transport ion pumps. The pumps are powered by adenosine triphosphate (ATP) to provide the energy to move the ions against their concentration gradients (i.e. sodium moves out of the cell and potassium is pumped in) and maintain the gradients inside and outside the cell.

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The number of particles in a substance can be calculated by multiplying the number of moles of the substance by Avogadro's Number ~ 6.02 × 10²³ particles/mol. Therefore to find the number of moles based on the number of particles, you would divide the number of moles by Avogadro's Number.

Since # of particles of H₂O = 5.3×10¹² particles

     then # of moles of H₂O = 5.3×10¹² particles ÷ 6.02 × 10²³ particles/mol

                                             = 8.804 × 10⁻¹² moles

Several problems can happen if an air conditioner is operated in a house that is not properly sealed and insulated.

Higher energy costs may result from the air conditioner having to work harder to maintain the intended temperature.

Through fractures, gaps, and inadequately insulated walls, the cold air generated by the air conditioner may escape the home, causing uneven cooling and discomfort for the residents.

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Propanal will form silver mirror upon heating with Tollen's reagent while propanoic acid will not respond.

To properly measure 20 ml of water, the 20 ml mark of the graduated cylinder must be at the meniscus.

We measure at the meniscus for what reason?

To have the "actual" volume be what is marked, the mark must be placed where the bottom of the meniscus should be on the glass. Therefore, by taking measurements from the bottom of the meniscus, you are harmonizing your measurement process with the method used to calibrate the markings on the glass in the first place.

The meniscus is what?

When a molecular substance (water, of course) comes into contact with another material, the surface forms a meniscus. You may imagine that happening with water when it adheres to the interior of a glass.

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Answer:

Explanation:

The correct statement about this cell is:

A) Electrons travel in the external circuit from zinc to lead.

This is because the electrode potential of zinc is lower than that of lead. In a galvanic cell, the electron flow goes from the negative electrode (anode), which is where oxidation occurs, to the positive electrode (cathode), where reduction occurs. In this case, the anode is the zinc electrode and the cathode is the lead electrode. Since the zinc electrode has a more negative electrode potential, it is where oxidation occurs and electrons are released, and these electrons travel in the external circuit to the lead electrode, where reduction occurs.

The molecule H₁₂O₆ does not exist in nature. The formula H₁₂O₆ suggests the presence of 12 hydrogen atoms and 6 oxygen atoms.

However, such a configuration is highly unstable and does not conform to the principles of chemical bonding and stability. In a typical molecule of water (H₂O), two hydrogen atoms are bonded to one oxygen atom. The Lewis structure for water would represent this bonding arrangement. Each hydrogen atom contributes one valence electron, and oxygen contributes six valence electrons.

The Lewis structure for water would show two lines (representing covalent bonds) connecting the oxygen atom to each hydrogen atom. Additionally, the oxygen atom would have two lone pairs of electrons (represented by dots) surrounding it. It is important to note that the Lewis structure represents the valence electron arrangement in a molecule and provides insight into its bonding and geometry.

However, the Lewis structure alone may not capture the full 3D shape and molecular properties. In the case of H₁₂O₆, the presence of 12 hydrogen atoms and 6 oxygen atoms is highly unlikely due to the unfavorable electron configuration and excessive charge repulsion.

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Answer: PtF6

Explanation:  is one of seventeen known binary hexafluorides.

Answer:

5 x 10^3 = 5 x 1000 = 5000

Hope this helps.

Good Luck

Answer:

Explanation:

We have 10 is raised to a power of 3, since 3 is positive you are to add three zeros to the right of 5.

When \(CO_{2}\) and \(H_{2} CO_{3}\) are both horizontal lines, the rate of the forward reaction is the same as the rate of the reverse reaction. The reaction is occurring at equilibrium, with no net change in the concentrations of reactants and products over time.

When the concentration of carbon dioxide \(CO_{2}\) and the concentration of carbonic acid \(H_{2} CO_{3}\) are both horizontal lines, it indicates that their concentrations remain constant over time. In such a scenario, the rate of the forward reaction is the same as the rate of the reverse reaction. A horizontal line on a concentration-time graph suggests that the concentrations of the reactants and products are not changing, implying that the reaction has reached equilibrium. At equilibrium, the rate of the forward reaction equals the rate of the reverse reaction. This is a fundamental principle of chemical equilibrium, described by the principle of microscopic reversibility.

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Answer:

B.) The difference in electronegativity of the two elements is less than 1.7.

Explanation:

A difference of less than 2 between atoms leads to covalent bond formation. Electronegativity is the ability of an atom to draw bonding electrons when it is bonded.

We know that in covalent bonding, atoms "share" elections. We also know that in ionic bonding, atoms "take" electrons. If the electronegativity was too great then atoms would no longer share electrons, one would just draw the electron to it. The ideal values to covalently bond, in this case, would be below two.

Answer:

La constante de equilibrio Ka del ácido láctico es 1.38x10⁻⁴.

Explanation:

El ácido láctico es un ácido débil cuya reacción de disociación es la siguiente:

CH₃CHOHCOOH + H₂O ⇄ CH₃CHOHCOO⁻ + H₃O⁺   (1)

0.025M - x                                        x                     x                    

La constante de acidez del ácido es:        

\( Ka = \frac{[CH_{3}CHOHCOOH^{-}][H_{3}O^{+}]}{[CH_{3}CHOHCOOH]} \)

Sabemos que la concentración del ácido inicial es:

[CH₃CHOHCOOH] = 0.025 M    

Y que a partir del pH podemos hallar [H₃O⁺]:

\( pH = -log[H_{3}O^{+}] \)

\( [H_{3}O^{+}] = 10^{-pH} = 10^{-2.75} = 1.78 \cdo 10^{-3} M \)

Debido a que el ácido se disocia en agua para producir los iones CH₃CHOHCOO⁻ y H₃O⁺ de igual manera (según la reacción (1)), tenemos:

[CH₃CHOHCOO⁻] = [H₃O⁺] = 1.78x10⁻³ M

Y por esa misma disociación, la concentración del ácido en el equilibrio es:

\( [CH_{3}CHOHCOOH^{-}] = 0.025 M - 1.78 \cdo 10^{-3} M = 0.023 M \)

Entonces, la constante de equilibrio Ka del ácido láctico es:

\( Ka = \frac{[CH_{3}CHOHCOOH^{-}][H_{3}O^{+}]}{[CH_{3}CHOHCOOH]} = \frac{(1.78 \cdo 10^{-3})^{2}}{0.023} = 1.38 \cdot 10^{-4} \)          

Espero que te sea de utilidad!  

Answer:

C

Explanation:

It's the amount of products you get compared to all the reactants you use. It's kind of like economy in that it's profit, and the higher the atom economy the more products/profit you have.

Answer:

C.) The measure of how much of the reactants end up as products in a chemical reaction.

Explanation:

I got it right on founders edtell.

Answer:

Answer

Explanation:

Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Fossils tell us when and where plants and animals once existed. ... This distribution of fossils led to theories that the southern continents were once joined in a supercontinent called Gondwana.

Answer: Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Fossils tell us when and where plants and animals once existed.

Explanation: I hoped that helped plzz mark as brainliest !!

Answer:

A

Explanation:

Bc ik

The number of atoms in 1 mole of carbon = the number of atoms in 1 mole of boron is not true about one mole.

It is untrue to say that one mole of fluorine gas weighs more than one mole of oxygen gas. Fluorine gas has a molar mass of 38 grams per mole, whereas oxygen gas has a molar mass of 32 grams per mole, based on their relative molar masses.

A mole of a substance is equal to 6.022 × 10²³ of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is referred to as "Avogadro's number" or "Avogadro's constant."

Since boron has a different molar mass than carbon, the statement that there are the same number of atoms in each mole is untrue.

The ratio of the substance's mass to its molar mass is used to express the number of moles of an element.

Moles  = Mass/Molar mass

Given that the molar masses of carbon and boron differ, the statement that the number of atoms in a mole of carbon is equal to the number of atoms in a mole of boron is false.

Therefore, the correct answer is option c) the number of atoms in 1 mole of carbon = the number of atoms in 1 mole of boron.

The complete question is:

Which of the following is not true about one mole?

a) the mass of 1 mole of carbon atoms = the mass of

b) 1 mole of boron atoms

one mole contains 6.02 x 1023 particles

c) the number of atoms in 1 mole of carbon = the number of atoms in 1 mole of boron

d) 12 g of carbon equals one mole of carbon atoms

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Answer:

D all of these

Explanation:

The process of classifying living things can be described from the perspective of the given choices described.

In the classification of organisms, they are placed into groups which they appropriately fit into.

All the choices given correctly shows the process of classifying organisms. This aspect of biology is described as taxonomy.

The order of reaction with respect to the triiodide ion can be determined experimentally by measuring the effect of changing the initial concentration of the triiodide ion on the rate of the reaction.

If the rate of the reaction changes proportionally to a change in the concentration of the triiodide ion, then the reaction is first-order with respect to the triiodide ion. If the rate changes proportionally to the square of the concentration, then the reaction is second-order, and so on. Without experimental data, it is difficult to determine the order of the reaction with respect to the triiodide ion in this particular reaction. However, based on the information provided in the reaction equation, we can infer that the triiodide ion is a reactant, and therefore, it must appear in one of the reaction steps. Since the triiodide ion is a reactant and not a catalyst or a product, it is likely to appear in the rate-determining step of the reaction mechanism. The rate-determining step is the slowest step in the mechanism and the one that limits the overall rate of the reaction. If the triiodide ion appears in the rate-determining step, this would suggest that the reaction is at least first-order with respect to the triiodide ion. However, other factors such as the presence of other reactants or catalysts may also affect the rate of the reaction.

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Answer:

Alkali metals are elements found in group 1 of the Periodic Table. Alkali metals are soft, malleable, ductile, and are good conductors of heat and electricity. They have low melting and boiling points compared to most other metals.

Answer:

The elements on the left-side of the periodic table are relatively electron deficient. So due to their comparatively low effective nuclear charges (the net positive charge of the protons minus the shielding core electrons below the valence level), their electrostatic hold on these electrons are weak.

Elements further right on the period table though,  have higher effective nuclear charges and stabilize electrons more effectively. Which leads to localized covalent bonding and the formation of molecules.

The right side contains non metals while the left side contains metals.

Metals lose electrons (negative electrons). They now have more protons,  therefore making the ion positive.

Non metals gain electrons (positive electrons). So the ion has more electrons than protons which makes the ion negative.

Answer:

A weak acid is an acid that partially dissociates into its ions in an aqueous solution or water. In contrast, a strong acid fully dissociates into its ions in water. At the same concentration, weak acids have a higher pH value than strong acids.

Explanation:

:)

Answer:

1.74 g/mL

Explanation:

Step 1: Given data

Mass of magnesium: 4.80 g

Volume of water displaced: 2.76 mL

Step 2: Calculate the volume of the piece of magnesium

The volume of the piece of magnesium is equal to the volume of water displaced in the graduated cylinder.

Step 3: Calculate the density of magnesium

The density of magnesium is equal to its mass divided by its volume.

ρ = m / V

ρ = 4.80 g / 2.76 mL

ρ = 1.74 g/mL

Magnesium dichromate is the correct name of the compound MgCr₂O₇.

The chemical formula that gives total number of atoms of each element in one molecule of a compound is called Molecular Formula.

Oxidation state is also known as oxidation number. It is defined as the atom is equal to the total number of electrons which have been removed from the element in order to form chemical bond with other atom.

Magnesium dichromate contains the Magnesium ion and chromate ions. Magnesium ion is represented as Mg⁺². Oxidation state of magnesium is +2. The chromate ion is represented as Cr₂O₇⁻². Oxidation state of chromate ion is -2.

Thus from the above conclusion we can say that The correct name of the compound MgCr₂O₇ is Magnesium dichromate.

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Answer:

I believe it means two molecules of oxygen.

Explanation:

The name for the molecular oxygen model is o2 and when you place a number in front of the element, it tells how many molecules there are of that element.  In this case, there are two molecules.

I would like to apologise in advance if this was incorrect.    

Answer:

If an insufficient amount of nitrogen were produced, the air bag would under inflate and not provide adequate protection. Clearly, the stoichiometry of the reaction is very important.

The freezing point of the 0.66 m solution of C4H10 in benzene is  2.1208 °C.

The freezing point of a solution is:

ΔT = Kf × m

ΔT = change in temperature

Kf = the cryoscopic constant of the solvent

m = molality of the solution

We have the following parameters:

FP (benzene) = 5.50 °C

Kf (benzene) = 5.12 °C/m

m = 0.66 m

ΔT = Kf × m

ΔT = 5.12 °C/m × 0.66 m

ΔT = 3.3792 °C

Freezing Point of Solution = FP (benzene) - ΔT

Freezing Point of Solution = 5.50 °C - 3.3792 °C

Freezing Point of Solution = 2.1208 °C

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