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DochEvi [55]
3 years ago
6

Which has the largest atomic size selenium or oxygen?

Chemistry
1 answer:
kolbaska11 [484]3 years ago
3 0

Answer:

Selenium

Explanation:

selenium has 4 energy levels (think a 4 story building) while oxygen only has 2 (think 2 story building). which one is taller?

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gulaghasi [49]

Answer:

A directory of relatives' phone numbers

Hope this helps

Explanation:

5 0
3 years ago
Gymnast always perform on padded mats. how does the mats protect the gymnast
dalvyx [7]

So if they fall, the padding will protect their neck or body part so they will not hit hard against the hard wooden or tile floor.

6 0
3 years ago
Read 2 more answers
Determine which of the acids are Arrhenius acids, Brønsted–Lowry acids, and Lewis acids. It is possible for an acid to be of mor
tatyana61 [14]

This is an incomplete question, here is a complete question.

Determine which of the acids are Arrhenius acids, Brønsted–Lowry acids, and Lewis acids. It is possible for an acid to be of more than one type. Which acids are Arrhenius acids?

AlCl₃ (aq)

BCl₃ (aq)

HCl (aq)

Answer :

HCl is an Arrhenius acid and Bronsted Lowry acid

AlCl₃ is a Lewis-acid

BCl₃ is a Lewis-acid

Explanation :

According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions (OH^-) when dissolved in water and an acid is defined as a substance which donates hydronium ions (H_3O^+) in water.

According to the Bronsted Lowry conjugate acid-base theory, an acid is defined as a substance which donates protons and a base is defined as a substance which accepts protons.

According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.

From this we conclude that:

HCl is an Arrhenius acid because it donates hydrogen ion and also Bronsted Lowry acid because it also donate protons.

AlCl₃ is a Lewis-acid because it is a electron deficient and accept lone pair of elections.

BCl₃ is a Lewis-acid because it is a electron deficient and accept lone pair of elections.

7 0
3 years ago
Given the atomic mass of select elements, calculate the molar mass of each salt.
den301095 [7]
1. 184.11
2. 168.812
3. 218.13
4. 272.21
8 0
3 years ago
When NH3(g) reacts with O2(g) according to the following reaction, 226 kJ of energy are evolved for each mole of NH3(g) that rea
serious [3.7K]

Answer:

4NH₃ + 5O₂   →  4NO + 6H₂O    ΔH = -904 kj

Explanation:

Given data:

Energy evolved when one mole of NH₃ react = 226 kj

Energy evolved when 4 mole of NH₃ react =  ?

Solution:

Chemical equation:

4NH₃ + 5O₂   →  4NO + 6H₂O      

It is stated in question that when one mole of ammonia react 226 kj energy evolved.

When 4 moles react energy evolved is,

1 mol = -226 kj

4 mol × -226 kj / 1mol

-904 kj

when 4 moles of ammonia react 904 kj energy is evolved.

Complete thermal equation:

4NH₃ + 5O₂   →  4NO + 6H₂O    ΔH = -904 kj

6 0
3 years ago
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