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netineya [11]
3 years ago
9

Does anyone know how to write out the formula for these?? not just the answer x

Chemistry
1 answer:
Tju [1.3M]3 years ago
5 0
Idk how to write the formula I had this same question
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Convert 1.71 × 1024 atoms of carbon to moles of carbon.
beks73 [17]
You need to use Avogadro's constant to convert from atoms of carbon to moles of carbon.

1.71*10^24 atoms C * (1 mole/6.022*10^23 atoms) = 2.84 moles of carbon
7 0
3 years ago
What do the energy resources uranium and coal have in common?
goblinko [34]

Answer:

option B. they both generate radioactive wastes.

7 0
3 years ago
Why can xenon expand its octet to form compounds but neon can't
Andrew [12]
<span>The electrons in the outer shell of Xenon are much further away from the nucleus than the electrons in the outer shell of Neon. The Xenon electrons are much less bound to the atom than Neon, and a strong electronegative atom like fluorine succeeds in tearing off an electron.</span>
3 0
3 years ago
Read 2 more answers
Based on the tiles shown, how many moles of oxygen gas (o2) are needed to produce 36.04 grams of water (h2o) when reacting with
madreJ [45]
We calculate for the number of moles of water given its mass by dividing the given mass by the molar mass. 
                               n water = (36.04 g) / (18 g/mol) 
                                n water = 2 mols
From the given balanced equation, every 6 moles of water produced will require 7 moles of oxygen.
                                n oxygen = (2 mols H2O) x (7 moles O2 / 6 moles H2O)
                                n oxygen  = 2.33 mols O2
3 0
3 years ago
Carmen is designing an experiment to determine the reactivity of certain elements on the Periodic Table. Which elements will mos
Vinvika [58]

Answer:

Option C: sodium and potassium

Explanation:

Elements in same group having same properties. In given option Only C is the correct option because sodium and potassium are present in same group i.e, group 1 and thus shows similar reactive properties. Bothe are alkali metal and have one valance electron. These are very reactive and can not found in free state in nature but present in compounds.

They react with halogens and form salts.

2Na + Cl₂  →  2NaCl

2K + Cl₂  →  2KCl

All other options are incorrect because,

Option A = Fluorine and neon

Both are present in different group. Fluorine is present in group 17 and neon in group 18 thus their reactivity is not similar.

Option B = Hydrogen and helium

Both are present in different group. Hydrogen is present in group 1 and helium in group 18 thus their reactivity is not similar.

Option D: Aluminum and chlorine

Both are present in different group. Aluminum is present in group 13 and chlorine in group 17 thus their reactivity is not similar.

All these three options are incorrect.

5 0
3 years ago
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