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valentina_108 [34]
3 years ago
12

Why is helium heavier than hydrogen​

Chemistry
2 answers:
Kaylis [27]3 years ago
7 0
Helium has more protons making it heavier by one atomic mass.
Alexxandr [17]3 years ago
5 0

Answer:

because it's has an additional electron. hydrogen is just made up of one proton

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Yakvenalex [24]

Answer:

Explanation:

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6 0
2 years ago
Would tennessine have properties similar to sulfur, chlorine, or hydrogen
ELEN [110]

Answer:

IDK sorry

Explanation:

3 0
3 years ago
Atoms of metallic elements can form ionic bonds, but they aren't very good at forming covalent bonds. why?
Solnce55 [7]
<span>They have a great tendency to lose electrons</span>
7 0
3 years ago
Calcular la cantidad de NaOH necesaria para preparar medio litro de disolución 2,5 N. (Dato: peso molecular del NaOH = 40 g/mol)
kolbaska11 [484]

Answer:

The amount of NaOH required to prepare a solution of 2.5N NaOH.

The molecular mass of NaOH is 40.0g/mol.

Explanation:

Since,

NaOH has only one replaceable -OH group.

So, its acidity is one.

Hence,

The molecular mass of NaOH =its equivalent mass

Normality formula can be written as:Normality=\frac{mass of solute NaOH}{its equivalent mass}  * \frac{1}{volume of solution in L} \\

Substitute the given values in this formula to get the mass of NaOH required.

2.5N=\frac{mass of NaOH}{40g/mol} *\frac{1}{1L} \\mass of NaOH=2.5N*40gmol\\                         =      100.0g

Hence, the mass of NaOH required to prepare 2.5N and 1L. solution is 100g

8 0
3 years ago
Osmium: atomic number
bonufazy [111]
Osmium atomic number is 76
7 0
3 years ago
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