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jok3333 [9.3K]
2 years ago
8

Helppp VVV URGENTT GENIUSES HELP MEEE

Chemistry
1 answer:
marta [7]2 years ago
6 0

Answer: Hydrogen

Explanation: Im pretty sure its Hydrogen since P is the cathode and it has a - charge meaning positively charged ions will be attracted to it and Hydrogen is the only gas with a positive charge in the answers.

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The table lists the chemical formulas or symbols of a few common substances. Which two substances are compounds? A) aluminum and
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D is the correct answer

every other option contains an element
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Which is not a compound?Electrons spin in shells around the nucleus. The closest shell (n = 1) can contain a maximum of _____ el
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The closest shell (n = 1) can contain a maximum of 2 electrons.

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3 years ago
Water can be formed in the following reaction:
Komok [63]

The  moles  of  oxygen  gas (O2) that is needed is    4  moles


 Explanation

2H2 +O2 → 2H2O

The  moles of O2  is determined using the mole  ratio  of H2:O2

that is from equation  above H2:O2  is 2:1  

If the moles of H2  is 8  moles therefore  the moles  of O2

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2 years ago
A silicon atom has an atomic number of 14. What information does the atomic number tell you? (Choose all possible answers)
Bezzdna [24]

Answer:

Silicon atoms have 14 protons.

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5 0
3 years ago
If a sample of oxygen gas originally at from 171.4 K has its temperature increased to 288.4 K and
julia-pushkina [17]

Answer:

V₂ = 0.95 L

Explanation:

Given data:

Initial temperature of gas = 171.4 K

Final temperature of gas = 288.4 K

Final volume = 1.6 L

Initial volume = ?

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The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

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T₁ = Initial temperature

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T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₁ = V₂T₁ /T₂

V₂ = 1.6 L × 171.4 K / 288.4 k

V₂ = 274.24 L.K / 288.4 K

V₂ = 0.95 L

6 0
2 years ago
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