As you move down the periodic table the atomic radius gets bigger. This is because __

To Find :

How many molecules are in 23 moles of oxygen (O₂).

Solution :

We know, 1 mole of any atom/molecule contains 6.022 × 10²³ numbers of atoms/molecules.

So, number of molecules in 23 moles of O₂ are :

[tex]n= 23\times 6.022\times 10^{23}\\\\n =138.506\times 10^{23}\\\\n = 1.385 \times 10^{25}\ molecules[/tex]

Hence, this is the required solution.

Answer:

480.6 g

Explanation:

Given data:

Number of molecules of methanol = 9.01 ×10²⁴

Mass in gram = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

9.01 ×10²⁴molecules ×1 mol /6.022 × 10²³ molecules

1.5 ×10¹ mol

15 mol

Mass in gram:

Mass = number of moles × molar mass

Mass = 15 mol × 32.04 g/mol

Mass = 480.6 g

Answer:

2Al(s) + 6HCl(aq)→2AlCl3(aq) + 3H2(g)

Answer:

will you be my Gf?:)

I am ready to be your gf:)

Answer:

The correct answer is - Orange light reflected from the t-shirt enters human eyes.

Explanation:

Human eyes and brain are altogether able to detect the color of the object by translating the light which is reflected by the object and transmitted by the light receptors in the eyes ad brain translate light to color.

The objects are able to absorb some colors and reflect others on the basis of their wavelength, The reflected colors are detected by our eyes and brain and objects appear to be a particular color. like here, the orange color is reflected by the t-shirt and enters in human eyes.

Answer:

its c

Explanation:

Answer:

I believe the correct answer is D.

Explanation:

You are breathing in dinitrogen and dioxygen. You exhale dinitrogen and carbon dioxide. And the atmosphere contains traces of other gases. You drink water. You have a wash with water, and soap. You eat carbohydrates and proteins. You ride to work on a vehicle powered by hydrocarbons, which spits out carbon dioxide exhaust fumes, and also some nitrogen oxides. And so your exposure to chemicals is pervasive, and unavoidable.

Answer:

d

Explanation:

Answer:

A unit of mass used to express atomic and molecular weights, equal to one-twelfth of the mass of an atom of carbon-12. It is equal to approximately 1.66 x 10-27 kg.

Explanation:

Answer:

a unit of mass used to express atomic and molecular weights, equal to one-twelfth of the mass of an atom of carbon-12. It is equal to approximately 1.66 x 10-27 kg.

Explanation:

hope it helps, mark brainliest please

Answer:

Radiation you're welcome <3

Answer: Answer to your question is B. I did a science

Explanation: Test was to see which would dissolve fastest...

Answer:

o A copper-tin alloy

Explanation:

Answer:

yes that should be true

Answer:

true

Explanation:

One study found there is only about one gram of gold for every 100 million metric tons of ocean water in the Atlantic and north Pacific

Answer:

B or C

Explanation:

I don't really know sorry.

Answer:

D

Explanation:

I think D I also took the test.

Answer:

Friction

Explanation:

Answer:

Answer:

the words to identify them is them in kaps right

Explanation:

Answer:

D. The water enters an aquifer through infiltration.

Explanation:

Hope it helps you:)

would you like to be my friend?:)

Answer: A. Thermometer

Explanation:

A thermometer is used to measure temperature , while the others measure different things.

Aluminum has the larger atomic radius.

silicone is larger than carbon.

Aluminum is larger than silicon

I think silicon is the answer

Answer:

change from solid to gas

Hii!! I believe the correct answer is D. can change from solid to gas. ((:

Answer:

Neon consisted of atoms of two different masses but chemically alike. ... Movement of electrons between energy levels in atom must absurb just a certain amount energy to move to higher level can't hover between levels.

Answer:

B

Explanation:

b/c air is not seen by eye

Answer:

Chromium, calcium, and osmium

Explanation:

These elements are metals, considering this, these elements electron shells(orbitals) are further away from the nucleus, with this, their attractions are not as strong as non-metals, so some of their electrons are able to move freely.

When you accumulate many atoms, these metals can form a "sea of electrons"  because they all have loose electrons interacting with each other. This allows easy conduction of heat and electricity.

Answer:

Chromium

Calcium

Osmium

Explanation:

The elements likely conduct electricity well are chromium, calcium and osmium. As these are metals and are observed to be good conductors of heat and electricity. They have extra electrons to donate and hence flow of electrons cause them to be a good conductor of electricity. Rest iodine is a non-metals which is not good conductors of electricity. Carbon is not itself a good conductor but one of its allotrope which is graphite is a good conductor of electricity.

Answer:

as u should. candy ain't even that tempting >^<

Answer:

How about free hoodies and chocolate.....Jkjkjk.....that happened to me once then I got rap edh

Explanation:

Answer:

It  remains the same

Explanation:

Answer:

NaCl

Explanation:

The only chemical species that shows an ionic compound is NaCl.

NaCl is an ionic compound that conducts electricity in molten state due to presence of free mobile electrons in the structure when molten.

Answer:

 it is A i took the test could i have the crown please

Explanation:

Answer:

pH = 6.5

Explanation:

Given data:

pH of substance = ?

[OH⁻] concentration = 3.2×10⁻⁸

Solution:

pOH = -log[OH⁻]

pOH = -log[3.2×10⁻⁸]

pOH = 7.5

we know that,

pH + pOH = 14

pH = 14- pOH

pH = 14 - 7.5

pH = 6.5

Answer:

B. The nickle Metal

Explanation:

A P E X