what is the number of each element and the total number of atoms for vinegar?

Answer:

D

Explanation:

it is trigonal planar, because central atom does not have the lone pairs, equal repulsion

The molecular geometry of the central atom in ClO3- will be triangular pyramidal.

The geometry of molecular structures can be predicted using the chemical model known as the valence shell electron pair repulsion hypothesis based on the number of electron pairs surrounding the core atoms of the molecules.

Since ClO3- has a steric number of 4 (one unpaired pair as well as three bonded pairs), can infer that its molecular shape is triangular pyramidal. Its electrical form is tetrahedral, as shown by the Lewis structure above.

Therefore, the correct answer will be option (c).

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Answer:

1g or 10^-3kg

Explanation:

as you know , the density =mass \volume

so  you have the mass from the number it self

Answer:

A polar covalent bond

Explanation:

When the absolute value of the difference in electronegativity of two bonded atoms is between 0.4 and 1.8 they tend to form polar covalent bonds.

Answer:

As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.

Answer:

The coins will turn green faster because chemical reaction speed up with higher temperatures

Copper coins turn green when exposed to water because the coins will turn green faster because reaction speeds up with higher temperatures.

The rate of a chemical reaction can be defined as the speed at which the products are formed from the reactants. The rate of a reaction gives information about the time frame under which a reaction can be finished.

The rate of reaction can be described as the speed of a chemical reaction at which reactants are transformed into products. Some chemical reactions are generally instantaneous, while some reactions take time to reach the final equilibrium. Pressure increases the concentration of gaseous reactants resulting in an increase in the rate of reaction.

The rate of reaction will increase with an increase in the temperature of the reaction as the reactant molecules get more kinetic energy and increase the number of collisions.

Therefore, copper coins will turn green faster because reactions speed up with higher temperatures.

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Answer: covalent bond is the force of attraction that holds together two atoms that share a pair of valence electrons. Covalent bonds form only between atoms of nonmetals. The two atoms that are held together in a covalent bond may be atoms of the same element or different elements.

Explanation:

Answer: They can find fossils and use a technology called radiocarbon to find the age of the fossil and then do an approximate about the age of the rock.

Explanation:

Answer:

0.0681 HCl moles

Explanation:

First we convert 22.7 mL to liters:

Then we use the definition of molarity:

So there are 0.0681 hydrochloric acid moles in 22.7 mL of a 3.0 M HCl solution.

Explanation:

Generally, temperature increases the rate of any chemical reaction considerably.

In a dissolution process, the solute is solvated in the solvent. Solutes are usually the solids or liquids being dissolved in the solution.

Answer:

C < N < O.

Explanation:

Hello!

In this case, since the electron affinity is a periodic property of elements indicating how likely is for the element to gain one electron, which is also related to the electronegativity, we can notice that fluorine is the most electronegative element or also, the element with the highest electron affinity whereas francium is the least electronegative element.

Therefore, we can infer that the electron affinity or electronegativity, increases from left to right and from bottom to top in the periodic table, it means that among carbon, nitrogen and oxygen, the element with the greatest electron affinity is oxygen, then nitrogen and finally carbon with the least one, thus answer is C < N < O.

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Answer:

part of the skeleton that supports the structure of face and forms a cavity from bone.

Hope it help u.

Explanation:

hope it is helpful to you

Answer:

top right and bottom left

Explanation:

just took test plato/edmentum

Answer:

They are plants also known as plankton and they produce about 80-85% of the world's oxygen.

Explanation:

Answer:

pH = 4.5, concentration = 0.045 M.

pH = 6.5, concentration = 0.175 M.

Explanation:

The ka for the can be calculated by using the formula below;

Ka = 10^-pka = 10^-5.960 = 1.1 × 10^-6

The concentration of hydrogen ion at pH = 4.50 can be calculated as given below;

{H^+ } = 10^-4.50 = 3.2 × 10^-5 M.

(NB=> 10 in this regards means the inverse of log).

The next step is to determine the distribution coefficient which can be calculated by using the formula below;

distribution coefficient = (partition coefficient) × ka / ka + ( concentration of Hydrogen ion,H^+).

distribution coefficient =( 5 × 1.1 × 10^-6 ) / 1.1 × 10^-6 + 3.2 × 10^-5 M. = 5.5 × 10^-6/ 3.2 = 0.00000171875

The fraction remaining from the compound = 45.0 mL / 45.0 mL + (0.00000171875 × 125).

= 0.999995.

Thus, the concentration at pH = 4.5 = 0.999995 × 0.0450 M = 0.045 M

(B). pH=6.50, thus the concentration of Hydrogen ion = 10^-6.5 = 3.2 × 10^-7 M.

distribution coefficient = (partition coefficient) × ka / ka + ( concentration of Hydrogen ion,H^+).

distribution coefficient = (5 × 1.1 × 10^-6)/ 1.1 × 10^-6 + 3.2 × 10^-7 M).

distribution coefficient = 5.5 × 10^-6/ 1.42 × 10^-6 = 3.9.

Therefore, the concentration = 3.9 × 0.0450 M = 0.175 M.

Answer:

D

Explanation:

Radiation - radiation is transfer of energy by electromagnetic waves

The sun warms the earth through the transfer of energy by electromagnetic waves. Therefore, option (D) is correct.

Electromagnetic radiation contains waves of the electromagnetic field, which propagate through space and carry radiant energy. It includes microwaves, radio waves, infrared, (visible) light, UV, X-rays, and gamma rays.

Electromagnetic radiation posses of electromagnetic waves, which oscillate with the electric and magnetic fields. Electromagnetic waves are created due to periodic changes in the electric field or magnetic field.

Depending on the periodic change that happens and the power produced, different wavelengths of the electromagnetic spectrum are produced. The effects of electromagnetic radiation on chemical compounds and biological organisms depend on the power of the radiation and its frequency.  

In order of increasing frequency and decreasing wavelength, these waves are arranged in the electromagnetic spectrum. The transfer of electromagnetic waves from the Sun to the earth, the energy of these waves warms the earth.

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Answer:

belonging or relating to a particular area or neighborhood, typically exclusively so

Explanation:

Answer:

No, IR should not soely be used to identify molecules

Explanation:

IR is a method that identifies the functional groups in a molecule by deducing the frequency of stretching and vibration of bonds. Each peculiar type of bond has a frequency for the vibration of each bond represented on the IR spectrum.

However, one method is never enough to identify a compound. A combination of methods must always be used to clear up ambiguities arising from overlapping IR frequencies. Also,  interpretation of the nuanced peaks of the fingerprint region in IR spectra is quite challenging and only gives a fair idea of the functional groups present in the compound.

Therefore other methods such as NMR, UV-VISIBLE etc should also be involved in the identification of compounds.

Answer:

Ans: 541 mmHg

Explanation:

given:

H2 = 31mmHg

CO= 510mmHg

get the sum

31+510=541

Answer:  The volume occupied at an altitude of 20.0 km is 34.5289 L

Explanation:

Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.

[tex]P\propto \frac{1}{V}[/tex]     (At constant temperature and number of moles)

where,

[tex]P_1[/tex] = initial pressure of gas = 101.325 kPa ( sea level)

[tex]P_2[/tex] = final pressure of gas = 10 kPa

[tex]V_1[/tex] = initial volume of gas = 3.40774 L

[tex]V_2[/tex] = final volume of gas = ?

Now put all the given values in the above equation, we get the final pressure of gas.

[tex]101.325\times 3.40774=10\times V_2[/tex]

[tex]V_2=34.5289L[/tex]

Therefore, the volume occupied at an altitude of 20.0 km is 34.5289 L

Answer:

where is the answers at

Explanation:

10.86 moles of water are produced

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

Pb + PbO₂ + 2H₂SO₄ ⇒ 2PbSO₄ + 2H₂O ( a car battery reaction)

From the equation :

mol ratio PbO₂ : H₂O = 1 : 2⇒ 1 mol PbO₂ produces 2 mol H₂O

so for 5.43 mol PbO₂ consumed,  mol H₂O :

[tex]\tt 2\times 5.43=10.86~moles[/tex]

Answer:

10.9

Explanation:

edge 2020

Answer:

1.396 x [tex]10^{7}[/tex] yards

Explanation:

The Earth has a spherical shape, thus its diameter is a straight line that passes through its center; dividing into two equal halves.

Given that the diameter of the earth is 1.276 x [tex]10^{7}[/tex] meters.

But,

1 meter = 1.09361 yards

So that,

1.276 x [tex]10^{7}[/tex] meters = x

⇒ x = 1.276 x [tex]10^{7}[/tex] x 1.09361

               = 1.39545 x [tex]10^{7}[/tex] yards

The diameter of the earth is 1.396 x [tex]10^{7}[/tex] yards.

Explanation:

The pressure will decrease but the volume remains constant

Answer:

[tex]\boxed {\boxed {\sf 39}}[/tex]

Explanation:

The mass number of an atom can be found by adding the number of protons and neutrons.

[tex]mass \ number =protons + neutrons[/tex]

There are 19 protons and 20 neutrons.

[tex]protons=19 \\neutrons=20[/tex]

[tex]mass \ number= 19+20[/tex]

[tex]mass \ number =39[/tex]

The mass number of this atom is 39

Answer:

Average weather conditions of a region over the long term

Explanation:

Climate is the long-term average of weather, typically averaged over a period of 30 years. More rigorously, it denotes the mean and variability of meteorological variables over a time spanning from months to millions of years.

Answer:

Isotopes are variants of an element, where the number of neutrons is different but its number of protons stay the same.

Explanation:

If the number of protons had changed then it would just be a different element.

Electron number changing simply adds charge to the atom, and doesn't change it or anything.

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Answer:

Isotopes are one of two or more forms of the same chemical element.

Explanation:

Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number,but a different number of neutrons giving each element isotope of a different atomic weight.

Answer: Atoms of carbon and hydrogen

Explanation:

Answer:

The answer to 12 is Indium... you should be able to figure out the rest from there with help from the internet since i've given you the element

Explanation:

I would usually do it but I got a ton of hw