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3 years ago

Select all the correct images, select the two atomic models that belong to the same element.

Chemistry

1 answer:

Scrat [10]3 years ago

8 0

Check the circled atoms in the attached diagram

Explanation:

The circled options all belongs to the same elements. They are simply isotopes.

Since:

Red ball = protons

Yellow ball = neutron

Blue ball = electron

The protons are positively charged and with the neutrally charged neutrons they both occupy the vicinity of the nucleus of an atom.

Electrons moves round the nucleus in orbits.

Atoms of the same elements have the same number of protons.

The circled options all have two protons.

The atoms only differ in the number of neutrons which signifies that they are merely isotopes.

More descriptively, the atoms are Helium atoms.

learn more:

Isotope brainly.com/question/4551913

#learnwithBrainly

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25,000cg is equal to _g

defon

Answer:

250 g

Explanation:

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2 years ago

If 5.55 moles of gas have a volume of 12.2 L, what is the new volume when the moles of

KatRina [158]

Answer:

$12.61 + 5.55) \div 12.2 =$

Explanation:

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1 year ago

A solution with a hydrogen ion concentration of 3.25 × 10-2 m is ________ and has a hydroxide concentration of _______

Romashka-Z-Leto [24]

To know the acidity of a solution, we calculate the pH value. The formula for pH is given as:

pH = - log [H+] where H+ must be in Molar

We are given that H+ = 3.25 × 10-2 M

Therefore the pH is:

pH = - log [3.25 × 10-2]

pH = 1.488

Since pH is way below 7, therefore the solution is acidic.

To find for the OH- concentration, we must remember that the product of H+ and OH- is equivalent to 10^-14. Therefore,

[H+]*[OH-] = 10^-14 
[OH-] = 10^-14 / [H+]

[OH-] = 10^-14 / 3.25 × 10-2

[OH-] = 3.08 × 10-13 M

Answers:

Acidic

[OH-] = 3.08 × 10-13 M

6 0

2 years ago

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ad-work [718]

The volume increases when the balloon temperature increases.

Explanation:

-10 F is converted into Kelvin as 249 K.

0°C is nothing but 0+ 273 = 273 K

And the room temperature is 25°C which is converted into Kelvin as 273 + 25 = 298 K.

249 K is below room temperature.

As per the Charles' law volume and temperature are directly proportional to each other, when the pressure of the gas remains constant.

V ∝ T

As the balloon temperature increases, the volume also increases.

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3 years ago

List the 3 mole equalities.

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12.000 g of 12c is one

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2 years ago

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