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slamgirl [31]
3 years ago
7

suppose the mass spectrum of a hypothetical monatomic element X contains a signal at mass number 13 and another of identical hei

ght at mass number 15
Chemistry
1 answer:
Illusion [34]3 years ago
6 0
Average the numbers 13 and 15 to get 14amu.
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How many moles are in 100g of carbon dioxide?
Fantom [35]

Answer:

A

Explanation:

First, let's find the molar mass of CO₂. This is 12 + 2(16) = 44 g/mole.

Now we can write 100g * (1 mole / 44g) = 2.27 mol, or A. Hope this helps!

7 0
3 years ago
Can u helmp me, i can give u a 25 points
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They’re less reactive, they don’t react quickly with water or oxygen which they resist corrosion.

Answer : true
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What is the concentration of each type of monosaccharide in lactose
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5 0
2 years ago
For the reaction 2NOCl(g) <-----> 2NO(g) + Cl2(g), Kc = 8.0 at a certain temperature. What concentration of NOCl must be p
Nat2105 [25]
Answer is: <span>concentration of NOCl is 3.52 M.
</span>
Balanced chemical reaction: 2NOCl(g) ⇄ 2NO(g) + Cl₂<span>(g).
Kc = 8.0.
</span>[NOCl] = 1.00 M; equilibrium concentration.
[NO] = x.
[Cl₂] = x/2; equilibrium concentration of chlorine.<span>
Kc = </span>[Cl₂] ·[NO]² / [NOCl].
8.00 = x/2 · x² / 1.
x³/2 = 8.
x = ∛16.
x = 2.52 M.
co(NOCl) = [NOCl] + x.
co(NOCl) = 1.00 M + 2.52 M.
co(NOCl) = 3.52 M; the initial concentration of NOCl.


7 0
3 years ago
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