What is the number of electronsin hydrogen


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Answer: 1.51355 mol.

Explanation:

Answer:

An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms.

Answer:

B) nitrogen

the Earth's atmosphere is mostly nitrogen

Answer:

Investigating how carbon dioxide levels impact ocean pH

Explanation:

I hope this helps! :)

Answer:

A

Explanation:

The study of a chemical is called chemistry.

The correct answer is A

Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive.

The radioactive of the Ra is option A that is:-

[tex]RA^{226}_{88}----->Rn^{222}_{86} +He^4_2[/tex].

During the decomposition, the element is breakdown into the neutron, proton, and electron.

Hence, the correct answer is A.

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Answer:

285g of fluorine

Explanation:

To solve this problem we need to find the mass of Freon in grams. Then, with its molar mass we can find moles of freon and, as 1 mole of Freon, CCl₂F₂, contains 2 moles of fluorine, we can find moles of fluorine and its mass:

Mass Freon:

2.00lbs * (454g / 1lb) = 908g of Freon

Moles freon -Molar mass: 120.91g/mol- and moles of fluorine:

908g of Freon * (1mol / 120.91g) =

7.5 moles of freon * (2moles Fluorine / mole Freon): 15 moles of fluorine

Mass fluorine -Atomic mass: 19g/mol-:

15 moles F * (19g / mol) =

Answer:

Cs+ and F-

Explanation:

The compound CsF is made up of two elements; Caesium (Cs) and F (Flourine)

Caesium is a metal and would therefore lose electrons - a cation is formed. When Caesium loses a single electron, the ion symbol is given as; Cs+

Flourine is a non metal and would therefore gain electrons - an anion is formed. When Flourine gains a single electron, the ion symbol is given as; F-

Hence the correct option is;

Cs+ and F-

Answer:

vapor pressure.

Explanation:

Answer:

I think it is vapor pressure or air pressure

electric energy to heat and light energy

Answer:

Nitrogen group element, any of the chemical elements that constitute Group 15 (Va) of the periodic table. The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi), and moscovium (Mc)

Explanation:

Explanation:

This medication is used as a moisturizer to treat or prevent dry, rough, scaly, itchy skin and minor skin irritations (e.g., diaper rash, skin burns from radiation therapy). Emollients are substances that soften and moisturize the skin and decrease itching and flaking.

Answer:

V = 2.75 L

Explanation:

Given that,

Mass of liquid glycerol, m = 3470 g

The density of liquid glycerol, d = 1.26 g/cm³

We need to find the volume of liquid glycerol.

We know that,

Density=mass/volume

[tex]V=\dfrac{m}{d}\\\\V=\dfrac{3470\ g}{1.26\ g/cm^3}\\\\V=2753.96\ cm^3[/tex]

We know that, 1 cm³ = 0.001 L

V = 2.75 L

So, the volume of liquid glycerol is 2.75 L.

Answer:

T₂  = 956.0 K

Explanation:

Given data:

Initial temperature = 273.15 K

Initial pressure = 1 atm

Final pressure = 3.5 atm

Final temperature = ?

Solution:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

Now we will put the values in formula:

1 atm / 273.15 K = 3.5 atm / T₂

T₂  = 3.5 atm ×273.15 K / 1 atm

T₂  = 956.0 atm. K /  1 atm

T₂  = 956.0 K

Answer:

D. solid candle wax near the flame melts as the candle burns.

Answer:

Part D, melting is a product of heating

Explanation:

Answer:

4500 cent

Explanation:

From the question, we were told that

a fence 80 meters long requires 30 nails per meter.

1 metre fence = 30 nails

Then 80 meters long= ( 30 × 80)

= 2400 nails

Which means a fence 80 meters long will require 2400 nails in total.

We need to find the cost in dollars for the nails to build a fence 80 meters long.

We know that 40 nails per box will cost 75 cents per box.

(2400 nails/40 nail per box)= 60 box

Then 60 box will be needed to complete the fence.

the cost in dollars for the nails to build a fence 80 meters long= (60 box × 75 cent per box)=4500 cent

Answer:

The heat energy released during nuclear fusion

The heat energy released during nuclear fusion. The correct option is D.

Thus, The Sun and other stars are powered by nuclear fusion reactions. A heavier nucleus is created when two light nuclei fuse together in a fusion reaction.

Because the mass of the resulting single nucleus is smaller than the combined mass of the two initial nuclei, the process produces energy. Remaining mass is converted to energy.

Why this happens is explained by Einstein's equation (E=mc2), which states in part that mass and energy can be transformed into one another. Fusion energy could be a significant source of energy generation if scientists can figure out how to use it in equipment on Earth.

Thus, The heat energy released during nuclear fusion. The correct option is D.

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Solids are defined by the following characteristics:

definite shape (rigid)

definite volume.

particles vibrate around fixed axes.

If Veronica spins in a circle with the compass in her hand, then the force which keeps the compass' needle pointing north is magnetic field.

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. In a magnetic field, a moving charge receives a force that is perpendicular to both its velocity and the magnetic field.

Hence the required force is a magnetic force.

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Answer:

____________________________________________________________________________

Answer:

heat and large amount of surface area

Explanation:

the heat and surface area allows the iron in the wool to combine with oxygen. by doing this it increases the mass of the steel wool

The mass of steel wool increases after burning because it reacts with oxygen in the air, leading to the formation of iron oxide.

After burning, steel wool's bulk grows due to the oxidation process. Iron oxide, also referred to as rust, is created when steel wool burns when it comes into contact with oxygen from the air.

The steel's iron reacts chemically with the oxygen to create iron oxide, which is heavier than the original iron. As a result of going through the oxidation process and becoming iron oxide, steel wool gains bulk.

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Answer:

zinc metal (ZN) is an element

Answer:

Imagewww.chem.purdue.edu › Equilibrium

Calculating the Hydroxide Ion Concentration from pOH

To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter ...

Calculating pH

Calculating hydronium ion ...

Calculating pOH

Calculating hydroxide ion ...

Calculating pKa

People also ask

How do you find hydronium ion concentration when given pH?

The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH. [H3O+] = 10-pH or [H3O+] = antilog (- pH) Example: What is the hydronium ion concentration in a solution that has a pH of 8.34? On a calculator, calculate 10-8.34, or "inverse" log ( - 8.34).

Answer: F. both c and d

Explanation:

homogeneous mixture is of same kind/phase. so the most appropriate answer we can take is smoothie and white bread dough :)

Answer:

a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.

A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

hope this helps ^^

Answer: these are for questions 1,2,4,5,7

Explanation: number 3: as the pressure in the volume decreases, the volume increases causing it to expand and eventually blow.

number 6: because the temperature and the amount of gas don’t change, these terms don’t appear in the equation. What Boyle’s law means is that the volume of a mass of gas is inversely proportional to its pressure. This linear relationship between pressure and volume means doubling the volume of a given mass of gas decreases its pressure by half.

hope this helps :))

Answer:

16.8768 g

Explanation:

The reaction that takes place is:

First we convert the mass of hydrogen and oxygen into moles, using their respective molar masses:

There are significantly less oxygen moles than hydrogen moles, so oxygen is the limiting reactant.

We calculate the produced moles of water, using the moles of the limiting reactant:

Finally we convert water moles into grams, using its molar mass:

34.5 grams

because the mass would multiply and do mass things

Answer:

If you put friction in to skating rink then obvioulsy the skaters wont be able to glide and skate.

Explanation:

friction is power that disturbes the moving power. places like skating rink and slides try to have the least amount of friction.