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3 years ago

Help!

Chemistry

1 answer:

jenyasd209 [6]3 years ago

8 0

Hello there,

In a hydrogen the neutrons and protons are as follows:

1 proton and 0 neutrons

Now with a hydrogen with a -3 isotope:

3 - 1 = 2 which means that you have 2 neutrons

A hydrogen with a -3 isotope would have 1 proton and 2 neutrons.

Hope I helped,

Amna

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A 12.82 g sample of a compound contains 4.09 g potassium (K), 3.71 g chlorine (Cl), and oxygen (O). Calculate the empirical form

Rina8888 [55]

The empirical formula of the compound is calculated as follows

first calculate the mass of oxygen= 12-(4.09 +3.71)= 5.02g

then calculate the moles of each element, moles = mass/ molar mass

moles of K = 4.09g/39 g/mol(molar mass of K) = 0.105 moles
moles of Cl = 3.71g/35.5 g/mol(molar mass of Cl) = 0.105 moles
moles of O = 5.02g/ 16g/mol(molar mass of O) = 0.314 moles

then calculate e mole ratio by dividing each mole by the smallest number of moles ( 0.105 moles)

K=0.105/0.105= 1
Cl=0.105 /0.105=1
O= 0.314/0.105=3

therefore the empirical formula = KClO3

7 0

3 years ago

lassify these bonds as ionic, polar covalent, or nonpolar covalent. Ionic Polar covalent Nonpolar covalent

jarptica [38.1K]

The question is incomplete, complete question is:

Classify these bonds as ionic, polar covalent, or nonpolar covalent.

Na-F

P-Cl

Cl-Cl

Answer:

Na-F : The bond present is ionic bond.

PCl : The bond present is polar covalent bond.

ClCl : The bond present is non polar covalent bond.

Explanation:

1) Ionic bonds are defined as the bonds which are formed by the complete transfer of electrons from cation (positively charged ions) to anion (negatively charged ions). For Example: NaCl, $BaSO_4$ etc.

Ionic compound :This compound is formed when difference in electronegativity between the atoms is very large.

2) Covalent bond is defined as the bond which is formed by the sharing of electrons between the atoms. For Example: HCl, $CH_4$ etc.

Polar covalent compound: This compound is formed when difference in electronegativity between the atoms is present. When atoms of different elements combine, it results in the formation of polar covalent bond. For Example: $CO_2,NO_2$ etc..

Non-polar covalent compound: This compound is formed when there is no difference in electronegativity between the atoms. When atoms of the same element combine, it results in the formation of non-polar covalent bond. For Example: $N_2,O_2$ etc.

Na-F : Two different atoms with high electronegativity difference

Ionic compound because sodium is metal and fluorine is non metal and the difference between their electronegativity is very large.The bond present is ionic bond.

PCl : Two different atoms with low electronegativity difference

Polar covalent compound because phosphorus and fluorine both are non metal and the difference between their electronegativity is not very large.The bond present is polar covalent bond.

ClCl : Two same atoms with nil electronegativity difference.

Non Polar covalent compound because both are chlorine atom (non metal) and the difference between their electronegativity is zero.The bond present is non polar covalent bond.

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3 years ago

Atomic radius of bromine

Keith_Richards [23]

Answer: The answer is 185 Pm

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3 years ago

Read 2 more answers

HELPPPPPPPPP ASAPPPP!!!!!

andreev551 [17]

Answer :
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