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3 years ago

In this experiment when both crests combine they produce a __________ spot.

Chemistry

2 answers:

zvonat [6]3 years ago

6 0

Answer:

meteor

Explanation:

Eduardwww [97]3 years ago

6 0

Answer:

meteor

Explanation:

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How can you tell the difference between an ionic compound and a molecule?

slamgirl [31]

Explanation:

An ionic compound is defined as the compound formed by transfer of electrons from one atom to another.

For example, lithium atom on donating its one valence electron to chlorine atom will result in the formation of an ionic bond and the compound formed is LiCl.

A molecule is defined as a substance which can contain either same or different elements.

For example, $Cl_{2}$ , $MgSO_{4}$ etc are molecules.

A molecule can contain either a covalent or ionic bond. But an ionic compound will always contain an ionic bond.

7 0

3 years ago

Do valence electrons show a repeating or periodic pattern

PolarNik [594]

Yes

Explanation:

Valence electrons on the periodic table of elements shows a repeating or periodic pattern. There is a noticeable pattern that can be deduced from the valence electrons in the orbitals of atoms.

Valence electrons are the electrons in the outermost shell of an element

The periodic table arranges elements based on their atomic numbers. This number denotes the number of protons or electrons an atom contains.

The table is divided into groups which are the vertical columns into which elements are classified.
The horizontal rows are called periods.
A period begins with one valence electron and ends with an atom having complete outer shell structure of an inert gas.
Down a group the valence electron is the same. The group number denotes the number of valence electrons in a group. Group 1 has just one valence electron in their outermost shell.

Learn more:

Valence electrons brainly.com/question/12580690

Periodic table brainly.com/question/2014634

#learnwithBrainly

8 0

3 years ago

The initial pressure of a mixture of C6H6 and an excess of H2 in a rigid vessel is 1.21 atm. A catalyst is introduced. After the

KengaRu [80]

Answer:

mole fraction of C6H6 = 0.613 atm

Explanation:

The equation for this reaction is :

$C_6H_6 _{(g)} + 3H_2_{(g)} \to C_6H_{12}_{(g)}$

Initial P₁ P₂ 0

Final 0 P₂ -P₁/2 P₁

After completion of the reaction;

P₁ + P₂ = 1.21 atm ----- (1)

P₂ - P₁/2 + P₁ = 0.839 atm

P₂ + P₁/2 = 0.839 atm ----- (2)

Subtracting (2) from (1); we have:

P₁/2 = 0.371

P₁ = 0.742 atm

From(1)

P₁ + P₂ = 1.21 atm

0.742 atm + P₂ = 1.21 atm

P₂ = 1.21 atm - 0.742 atm

P₂ = 0.468 atm

Thus, the partial pressure of C6H6 = 0.742 atm

∴

Partial pressure = Total pressure × mole fraction of C6H6

mole fraction of C6H6 = Partial pressure / Total pressure

mole fraction of C6H6 = 0.742 atm / 1.21 atm

mole fraction of C6H6 = 0.613 atm

5 0

3 years ago

Draw and label a diagram to show how you would separate each mixture?

aksik [14]

Separate the nails and circles with a magnet and the fishes with a net

4 0

4 years ago

A student weighs out 1.026 grams of potassium hydrogen phthalate (KHP) and quantitatively transfers the KHP to a 100 mL volumetr

Rus_ich [418]

Answer:

Explanation:

1.026 g/204.23 g/mole= 0.00502 mole

0.00502/0.1 L= 0.0502 molar

5 0

3 years ago