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polet [3.4K]
3 years ago
8

Fill in the blanks to determine the number of protons and electrons in an oxygen ion. (Consult the periodic table to determine t

he number of protons in a neutral oxygen atom.) The O2− ion has _____ protons and _____ electrons. Express your answers as integers separated by a comma.
Chemistry
2 answers:
Arte-miy333 [17]3 years ago
6 0
The answer would be 2
natima [27]3 years ago
4 0

<u>Answer:</u> The number of protons and electrons in the given ion are 8, 10 respectively.

<u>Explanation:</u>

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

For the given representation of ion, which is:  O^{2-}

We are given:

Atomic number = Number of protons = 8

Charge on the ion = -2

Number of electrons = Number of protons - charge = 8 - (-2) = 10

Hence, the number of protons and electrons in the given ion are 8, 10 respectively.

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List the number of each type of atom on the left side of the equation 2C6H14(l)+19O2(g)→12CO2(g)+14H2O(g) Enter your answers sep
murzikaleks [220]

<u>Answer:</u> The number of carbon, hydrogen and oxygen atoms on the left side of the reaction are 12, 28 and 38 respectively

<u>Explanation:</u>

In a chemical equation, the chemical species are termed as reactants or products.

Reactants are defined as the species which react in the reaction and are written on the left side of the reaction arrow.

Products are defined as the species which are produced in the reaction and are written on the right side of the reaction arrow.

For the given chemical equation:

2C_6H_{14}(l)+19O_2(g)\rightarrow 12CO_2(g)+14H_2O(g)

On the reactant side:

Number of carbon atoms = (6 × 2) = 12

Number of hydrogen atoms = (14 × 2) = 28

Number of oxygen atoms = (2 × 19) = 38

Hence, the number of carbon, hydrogen and oxygen atoms on the left side of the reaction are 12, 28 and 38 respectively

3 0
3 years ago
In an experiment, two unknown compounds (one an alcohol and the other an ether) of equal molecular mass were dissolved in water.
-BARSIC- [3]

Answer: B. It is an ether because it is unable to to form a hydrogen bond, so it is less soluble than water

Explanation: Alcohols (ROH) are more soluble in water as they can form hydrogen bonding with water whereas ethers (ROR) are less soluble as they do not form hydrogen bonds with water.

For formation of hydrogen bond, the electronegative atom (F, Oand N) must be attached to hydrogen and in ethers (ROR), there is no hydrogen directly attached to electronegative oxygen atom, thus are less soluble in water.


4 0
3 years ago
What is the mass of 3.0 x 10^23 atoms of neon
kari74 [83]
Molar mass neon = <span>20.1797 g/mol

20.1797 g ---------- 6.02x10</span>²³ atoms
         ? g ------------ 3.0 x 10²³ atoms

mass = 3.0 x 10²³ *  <span>20.1797 / 6.02 x 10</span>²³

mass = 6.054x10²⁴ / 6.02 x 10²³

mass = 10.05 g

hope this helps!
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3 years ago
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Name the element which lies in group IA and 3rd period. What is the valency of it and why?​
Jlenok [28]

Answer:

Bro I got notification of this question but soory I don't know the answer Hope you understand me

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3 years ago
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Hydrogen sulfide, H2S, has the characteristic odor of rotten eggs. If a sample of H2S gas at 755.0 torr and 25.0°C in a 2.00-L c
gavmur [86]

Answer:

0.153 atm or 116.1 torr

Explanation:

Hello, in the attached photo you will find the numerical procedure to obtain the pressure in the second state.

- Take into account that in the first part, the moles are needed based on the ideal gas equation, because they are subsequently used in the computation of the second state's pressure.

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5 0
4 years ago
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