(50 POINTS) Why does the radius of an atom increase as you go down a group on the periodic table?

A) because you are increasing the size of the electrons, which takes up more space

B) because you are adding another outer level of electrons, further from the nucleus

C) because you are adding more neutrons, which reduces the attraction between proton and electron

D) because you are decreasing the pull by the nucleus, allowing the electrons to travel further away

Answer:

The volume of a given amount of gas is inversely proportional to its pressure when temperature is held constant (Boyle's law). Under the same conditions of temperature and pressure, equal volumes of all gases contain the same number of molecules

Explanation:

Answer:

48 cups

Explanation:

16 x 3.5 = 48

Since one gallon is 16 cups, it would be done like this

Answer:

plasma

Explanation:

Plasma, in physics, an electrically conducting medium in which there are roughly equal numbers of positively and negatively charged particles, produced when the atoms in a gas become ionized. It is sometimes referred to as the fourth state of matter, distinct from the solid, liquid, and gaseous states.

Answer:

A.

Explanation:

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Answer:

A. Is the correct answer.

Explanation:

It is correct because you would need to read the sentence over with all the choices you have. and transformed makes sense.

Answer:

The volume of car having density 3 g/mL and mass 75 g is 25 mL.

Explanation:

Given data:

Volume of car = ?

Density of car = 3 g/mL

Mass of car = 75 g

Solution:

The given problem will be solved through density formula.

Density:

Density is equal to the mass of substance divided by its volume.

Formula:

D=m/v

D= density

m=mass

V=volume

Now we will put the values in formula.

3 g/mL = 75 g/ v

v = 75 g/ 3 g/mL

v = 25 mL

The volume of car having density 3 g/mL and mass 75 g is 25 mL.

Answer:

Everything we see comes from the transferring of electrons, or redox reactions. Fire, the screen you are staring at, and many other chemical reactions that happen everyday, we don't even care to notice anymore. Everything in our bodies is made up of compounds, from simple things such as H2O, and to the food we eat, loaded with sugar, C12H22O11. From the para-benzoic acid on your sunscreen, to the O3 in the ozone layer high above us.

Explanation:

Answer:

That it is hard to compress

Explanation:

Answer:

no it is not. The name refers to the chemical formula of water H20 so water is made from elements, but is not itself an element

Answer:

no it's part of chemistry to play thing exploring OR not.

Explanation:

Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.

Answer:

i dont undersstand lol

Explanation:

Explanation:

bhag bhag aaya sheer

..........

Answer:

A is one of them.

Is there more?

B and D if I'm not mistaken.

The lightning storm is just what you'd expect it to be, and the comb is collecting particles of what looks like paper?

Anyway, the rock and the magnet are forcefully pulling the metal objects towards it with electromagnetism.

Answer:

The absorbance of the solution is 0.21168.

Explanation:

Given that,

Wavelength = 500 nm

Molar absorptivity = 252 M⁻¹ cm⁻¹

Number of moles = 0.00140

Volume of solution = 500.0 mL

Length = 3.00 mm

We need to calculate the molar concentration

Using formula of the molar concentration

[tex]C=\dfrac{N}{V}[/tex]

Where, N = number of moles

V = volume

Put the value into the formula

[tex]C=\dfrac{0.00140}{0.5000}[/tex]

[tex]C=0.0028\ M[/tex]

We need to calculate the absorbance of the solution

Using formula of absorbance

[tex]A=\epsilon C l[/tex]

Put the value into the formula

[tex]A=252\times0.0028\times0.300[/tex]

[tex]A=0.21168[/tex]

Hence, The absorbance of the solution is 0.21168.

The absorbance of a compound, with a molar absorptivity at 500 nm wavelength of 252 M⁻¹ cm⁻¹, prepared by dissolving 0.00140 moles of a solute in enough water to make a 500.0 mL solution, measured in a 3 .00 mm pathlength cell, is 0.212.

First, we will calculate the molarity of the compound, which is equal to the moles of solute divided by the liters of solution.

[tex]M = \frac{0.00140mol}{0.5000L} = 0.00280 M[/tex]

Then, we will convert 3.00 mm to cm using the conversion factor 1 cm = 10 mm.

[tex]3.00 mm \times \frac{1cm}{10mm} = 0.300 cm[/tex]

Finally, we will calculate the absorbance of the compound using the Beer–Lambert equation.

[tex]A = \epsilon \times b \times C[/tex]

where,

[tex]A = \epsilon \times b \times C = \frac{252}{M.cm} \times 0.300 cm \times 0.00280 M = 0.212[/tex]

The absorbance of a compound, with a molar absorptivity at 500 nm wavelength of 252 M⁻¹ cm⁻¹, prepared by dissolving 0.00140 moles of a solute in enough water to make a 500.0 mL solution, measured in a 3 .00 mm pathlength cell, is 0.212.

You can learn more about the Beer–Lambert law here: https://brainly.com/question/24571070?referrer=searchResults

it's B

Explanation:

just because 1111111111111111111

Answer:

11.2

Explanation:

Find molar mass of carbon 12.01 g/mol then divide by 6.00 g of Carbon, then divide by STP 22.4 L = 11.19 and round to sig fig = 11.2 L

11.2 L volume of carbon dioxide gas is released at STP. Hence, option B is correct.

The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

For this question, use the formula PV=nRT firstly, define your knowns (this requires you to calculate moles of carbon)

Molar mass of carbon = 12.01 g/mol

Moles carbon=[tex]\frac{mass}{molar \;mass}[/tex]

Moles carbon=[tex]\frac{6.00 g}{12.01 g/mol }[/tex]

Moles carbon= 0.4995836803 moles

P=101.3 kPa

V=?

n= 6.0÷12 = 0.5

R= 8.31

T= 273 K

V= (0.5 x 8.31 x 273) ÷101.3    

=11.19

Therefore, 11.2 L of carbon dioxide will be produced.

Learn more about the ideal gas here:

https://brainly.com/question/27691721

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Answer:

There are two sets of groups in the periodic table. The first set are Group A elements and are also known as representative elements. The second set are Group B elements and are also known as transition metals. Representative elements are the most abundant elements on earth.

Answer:

The average rate is the change in concentration over a selected period of time. It depends on when you take the measurements. The instantaneous rate is the rate at a particular time.

Explanation:

Answer:

metric system

Explanation:

Scientists use the metric system, which uses the following base units: 1. Meter for length 2. Gram for mass 3. Liter for volume 4. Second for time Different prefixes

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 57.6 g

volume = 40.25 cm³

We have

[tex]density = \frac{57.6}{40.25} \\ = 1.431055900...[/tex]

We have the final answer as

Hope this helps you

Answer:

True

Explanation:

A proton has a charge of +1, while an electron has a charge of -1. This is why a neutral atom has the same number of protons as electrons.

Neutrons have no charge, hence their name neutron which is similar to neutral.

Answer:

b

Explanation:

identify objects.

Answer:

?

Explanation:

Answer:

known as the Doctrine of Uniformity or the Uniformitarian Principle, is the assumption that the same natural laws and processes that operate in our present-day scientific observations have always operated in the universe in the past and apply everywhere in the universe.

Explanation:

Answer:

26.7°C

Explanation:

Using the formula; Q = m × c × ΔT

Where; Q = amount of heat

m = mass

c = specific heat

ΔT = change in temperature

In this question involving iron placed into water, the Qwater = Qiron

For water; m= 50g, c = 4.18 J/g°C, Initial temp= 25°C, final temp=?

For iron; m = 30.5g, c = 0.449J/g°C, Initial temp= 52.7°C, final temp=?

Qwater = -(Qiron)

m × c × ΔT (water) =- {m × c × ΔT (iron)}

50 × 4.18 × (T - 25) = - {30.5 × 0.449 × (T - 52.7)}

209 (T - 25) = - {13.6945 (T - 52.7)}

209T - 5225 = -13.6945T + 721.7

209T + 13.6945T = 5225 + 721.7

222.6945T = 5946.7

T = 5946.7/222.6945

T = 26.7

Hence, the final temperature of water and iron is 26.7°C

Answer:

Condensation

Explanation:

Quick answer