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Mandarinka [93]
3 years ago
5

What can be done in a laboratory to correctly identify flame tests that are the same color

Chemistry
1 answer:
IgorC [24]3 years ago
4 0
<em>You can separate your lab materials for each flame test and color code them using non-flammable labels.</em>

<em>It helps a ton when I do lab tests ....</em>
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The air in a 4.00 L tank has a pressure of 1.20 atm . What is the final pressure, in atmospheres, when the air is placed in tank
stellarik [79]

Answer:

P₂ = 1.92 atm

Explanation:

According to the boyle's law:

The pressure of given amount of gas at constant temperature and number of moles of gas is inversely proportional to the volume.

P₁V₁= P₂V₂

Given data:

Initial volume = 4.00 L

Initial pressure = 1.20 atm

Final volume = 2500  mL  

Final pressure = ?

Solution:

First of all we will convert the volume into litter.

2500 mL × 1L/1000 mL = 2.5 L

P₁V₁ =  P₂V₂

P₂ = P₁V₁ /V₂

1.20 atm×4.00 L = P₂ ×2.5 L

P₂ = 1.20 atm×4.00 L/ 2.5 L

P₂ = 4.8 atm. L/ 2.5 L

P₂ = 1.92 atm

4 0
4 years ago
Write the chemical equation for the reaction of Fe(II) ion (Fe2 ) with phenanthroline. (Use the abbreviation phen for the phenan
miskamm [114]

Answer:

[Fe(phen)3]2+    Reactants  Fe+2 clear phen white solid   product orange red

mol ratios 1;1 OF fE

Explanation:

8 0
3 years ago
What state of matter is dubnium
kirill [66]
At room temperature, it is a solid state of matter. hope this helps, have an amazing day :)
7 0
3 years ago
Read 2 more answers
According to Coulomb’s law, what will happen to the electric force between
Deffense [45]

Answer:

C. Fe will stay positive and increase in magnitude.

Explanation:

Coulomb's law states that the force of attraction of repulsion between two charged particles is directly proportional to the magnitude of their charges and inversely proportional to the square of the distance of separation between them.

This means that if the size of the charges are large, the force acting on them will be large as well. Also if the distance between the two charges increases the force decreases. However, the force increases when the distance of separation decreases.

Like charges repel, therefore, two negative charges brought together will repel each other, and the distance between the two charges decreases, the force will increase in magnitude. Forces of repulsion are considered positive, therefore, the force, Fe, will stay positive and increase in magnitude.

8 0
3 years ago
What the oxidation state of sulfur in sulfite?
RUDIKE [14]

Answer:

+4

Explanation:

SO^{-2} _{3} , Oxygen always works with -2. You multiply with the number of atoms -2*3= -6

S=x+(-6)=-2

x-6=-2   -> x= -2+6  -> x= +4

4 0
4 years ago
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