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Ksenya-84 [330]
2 years ago
8

How did modern scientists experiment with Van Goghs paints to determine their chemical reactions?

Chemistry
1 answer:
Vlada [557]2 years ago
7 0

Answer:

the would test random expirements

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How does the number of valence electrons for elements change across a period?
NeTakaya
D. The number increases and then decreases for noble gases
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3 years ago
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Please help!! 20 points!! Posted this previously and forgot to change it to 20 points but it is now
spayn [35]

Answer:

0.571 mol

Explanation:

Given data:

Number of moles of NaHCO₃ = 0.571 mol

Number of moles of CO₂ produced = ?

Solution:

Chemical equation:

NaHCO₃ + C₃H₆O₃   →     CO₂  + C₃H₅NaO₃ + H₂O

Now we will compare the moles of CO₂ with NaHCO₃ from balance chemical equation.

                             NaHCO₃          :            CO₂

                                    1                :               1

                                 0.571            :            0.571

So number of moles of CO₂  produced are 0.571.

3 0
3 years ago
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Why is light helpful? You can just give one reason
hoa [83]
Light is helpful because it allows us to see things around us.
I hope this helps :)
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2 years ago
A mechanism for the decomposition of ozone is (2 O3 → 3 O2). O3 ⇌ O2 + OO + O3 → O2 + O2What is the molecularity for the f
Gnesinka [82]

Answer:

The correct answer is option c.

Explanation:

Molecularity is defined as number of atoms , ions or molecules that must collide with one another so as to result in a chemical reaction.It is simply the sum of molecules of different reactants as represented in balanced chemical equation.

Reaction taking place in one step are said to be elementary reaction.

Reaction taking place in more than one step are said to be complex reaction.

A mechanism for the decomposition of ozone is given as:

1) O_3 \rightarrow O_2 + O

Molecularity for the first elementary reaction is 1. This because single ozone molecule is present.

2) O + O3\rightarrow O_2 + O_2

Molecularity for the second elementary reaction is 2. This because single ozone molecule reacts with 1 oxygen atom.

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3 years ago
In ammonium chloride salt (nh4cl) the anion is a single chloride ion, cl. what is the cation of nh4cl
miskamm [114]
NH₄Cl → NH₄⁺ + Cl⁻

NH₄⁺ (the ammonium cation)
5 0
3 years ago
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