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allsm [11]
3 years ago
6

If 3.0 moles of x and 4.0 moles of y react according to the hypothetical reaction below, how many moles of the excess reactant w

ill be left over at the end of the reaction? x + 2y xy2 2.0 mol x left over 1.0 mol x left over 2.0 mol y left over 1.0 mol y left over
Chemistry
1 answer:
Umnica [9.8K]3 years ago
4 0
Answer is: <span>1.0 mol X left over. 
</span>Chemical reaction: X + 2Y → XY₂.
n(X) = 3,0 mol, excess reactant.
n(Y) = 4,0 mol, limiting reagent.
n - amount of substance.
from reaction: n(X) : n(Y) = 1 : 2.
n(X) : 4 mol = 1 : 2.
n(X) = 2 mol, that reacts.
excess of X: 3 mol - 2 mol = 1 mol.

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3 years ago
Rank these photons in terms of increasing energy:<br> (b) red (λ = 660 nm);
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Rank the following photons in terms of increasing energy: (a) blue (λ = 453 nm); (b) red (λ = 660 nm); (c) yellow (λ = 595 nm).

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8 0
2 years ago
The KM is:A) equal to the product concentration at initial reaction conditions.B) equal to the substrate concentration when the
cestrela7 [59]

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6 0
3 years ago
Select all that apply to organic compounds. Organic compounds are only found in living things. Organic compounds can be synthesi
Andreyy89

Answer:

Correct options:

Organic compounds can be synthesized in a laboratory setting.

There are hundreds of thousands of organic compounds.

Explanation:

1) Organic compounds are only found in living things: False

Organic compounds are mainly carbon based. Although organic compounds are derived from living things like plants and animals, non-living things like sedimentary rocks are also rich in carbon.

2) Organic compounds can be synthesized in a laboratory setting: True

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7 0
3 years ago
Read 2 more answers
How many moles are in 3.01*10^23 atoms of Mg
Basile [38]
1 mole ------------ 6.02x10²³ atoms
? moles ----------- 3.01x10²³ atoms

moles = ( 3.01x10²³ ) x 1 / 6.02x10²³

=> 0.5 moles Mg
7 0
4 years ago
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