Which of the following is not a diatomic molecule? nitrogen hydrogen bromine helium

Answers

Answer 1

Answer:

Answer: Option (d) is the correct answer.

Explanation:

When two atoms are bonded together then it is known as a diatomic molecule.

Such as nitrogen exists as $N_(2)$ molecule in atmosphere so, it is a diatomic molecule.

Hydrogen also exists as $H_(2)$ molecule in atmosphere so, it is also a diatomic molecule. Also, bromine is a diatomic molecule because it exists as $Br_(2)$ molecule into the atmosphere.

But helium exists as He molecule as it has 2 electrons so, as per the octet rule it's s-shell is completely filled. Hence, it is stable and exists as a monoatomic molecule into the atmosphere.

Thus, we can conclude that out of the given options, helium is not a diatomic molecule.

Answer 2

Answer:

Answer:

HELIUM

That's your answer!!

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The moon is in a synchronous orbit with earth. What is a result of this type of orbit?

Answers

Answer:

Synchronous rotation is the result of tidal forces that over time slow the rotation of the smaller body until it is synchronized with its period of revolution around the larger body.

Explanation:

Which is the molar mass of BF3?10.81 g/mol
29.81 g/mol
48.81 g/mol
67.81 g/mol

Answers

The molar mass of BF3 is 67.81 g/mol

Explanation

Molar mass is the mass of all atoms in a molecule in gram per mole.
molar mass of a molecule is calculated by adding atomic mass of constituent atom

use the periodic table to determine the atomic mass of each element in the molecule.

that is;

atomic mass of B = 10.81 g/mol

atomic mass of F = 19 g/mol

since there 3 atoms of F in BF3 the atomic massof F in BF3= 3 x19 = 57 g/mol

total molar mass of BF3 = 10.81 g/mol + 57 g/mol = 67.81 g/mol

67.81 g/mol is the molar mass of BF $_3$ . Therefore, the correct option is option D among all the given options.

The ratio among the mass with the quantity of substance (measured within moles) in any sample of a compound of chemicals is known as the molar mass (M) in chemistry. The molar mass of a material is a bulk attribute rather than a molecular one. The compound's molecular weight is an average over numerous samples, which frequently have different masses because of isotopes. A terrestrial average or a function of the relative proportion of the isotopes of the component atoms on Earth, the molar mass is most frequently calculated using the standard atomic weights.

atomic mass of B = 10.81 g/mol

atomic mass of F = 19 g/mol

atomic massof F in BF $_3$ = 3 x19 = 57 g/mol

total molar mass of BF $_3$ = 10.81 g/mol + 57 g/mol = 67.81 g/mol

Therefore, the correct option is option D.

To know more about molar mass, here:

brainly.com/question/31545539

#SPJ6

Enter the molecular formula for butane, C4H10.
express in a chemical formula

Answers

Answer: the molecular formula is C₄H₁₀

You can also express it as: CH₃ - CH₂ - CH₂ - CH₃.

Explanation:

1) The molecular formula is the chemical formula for a covalent compound. It shows the elements present in one molecule of the compound: type of atoms and the number of each.

The number of each type of atoms is indicated by the subscript to the right of the symbol.

2) Butane is the alkane with 4 carbon atoms.

3) The general formula for the alkanes is CₓH₂ₓ₊₂, meaning thar for x atoms of C there are 2x+2 atoms of H. Therefore, for 4 C atoms there are 2(4)+2 = 8 + 2 = 10 H atoms.

That is why the molecular formula of butane is C₄H₁₀, meaning that each molecule of this alkane has 4 atoms of carbon and 10 atoms of hydrogen.

The other expression: CH₃ - CH₂ - CH₂ - CH₃, shows that this compounds is a chain, in which each C has 4 bonds, one with other C atom to the right, one with other C atom to the right and the difference (2 or 3) with H atoms.

The molecular formula of butane is $\boxed{{{\text{C}}_{\text{4}}}{{\text{H}}_{{\text{10}}}}}$ .

Further explanation:

The molecular formula is a chemical formula that depicts the total number and kinds of atoms present in a molecule. For example, molecular formula of carbon dioxide is ${\text{C}}{{\text{O}}_2}$ .

Hydrocarbon is a term for the organic compounds that consist of hydrogen and carbon only.

Types of hydrocarbons:

1. Saturated hydrocarbons

The simplest hydrocarbons that are composed of only single bonds are called saturated hydrocarbons. These hydrocarbons have the general formula of ${{\text{C}}_n}{{\text{H}}_(2n + 2)}$ , where n is the number of carbon atoms. These hydrocarbons have suffix “ane” in their names. Examples of such hydrocarbons are methane, hexane, and propane.

2. Unsaturated hydrocarbons

These have one or more multiple bonds in them. These hydrocarbons have suffix “ene” or “yne”, depending on whether there is a double or triple bond between them. Hydrocarbons comprising of double bonds are called alkenes and those having triple bonds are called alkynes.

The name of butane includes the suffix “ane”. This implies it is a saturated hydrocarbon and contains only single bonds in it. The prefix “but” indicates the presence of four carbon atoms in this molecule.

Substitute 4 for n in the general formula of alkane $\left( {{{\text{C}}_n}{{\text{H}}_(2n + 2)}} \right)$ to find out the formula of butane.

$\begin{aligned}{\text{Molecular formula of butane}} &= {{\text{C}}_{\text{4}}}{{\text{H}}_{\left( {{\text{2}}\left( {\text{4}} \right){\text{ + 2}}} \right)}}\n&= {{\text{C}}_4}{{\text{H}}_(10)}\n\end{aligned}$

Learn more:

Calculate the moles of ions in the solution: brainly.com/question/5950133
Calculate the moles of chlorine in 8 moles of carbon tetrachloride: brainly.com/question/3064603

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Stoichiometry of formulas and equations

Keywords: molecular formula, butane, C4H10, 4, ane, ene, yne, alkane, alkyne, alkene, saturated hydrocarbon, unsaturated hydrocarbon.

Why is Neon in the same group of the periodic table as Helium?

Answers

Because they have a full outer shell and they are both noble gases...Because the outer shell has attained stable electronics configuration of octate rule this it is with noble gas as helium. Hope I helped!

Which is defined as moles of solute per liter of solution?a. Molarity
b. Formality
c. Density
d. Molality
e. Normality

Answers

A. Molarity . Explaining about Moles

The answer is A. Molarity

A geographical area where plants, animals, the landscape and the climate all interact together is called a(n)environment.
ecosystem.
biome.
food web.

Answers

It's ecosystem :)
noun: eco-systemsa biological community of interacting organisms and their physical environment.

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