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lapo4ka [179]
3 years ago
15

Orbital notation of h

Chemistry
1 answer:
shutvik [7]3 years ago
8 0

Answer: in the box, put an arrow facing up. Below the box, write 1s

Explanation:

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How many moles of N2O3 contain 2.55 × 1024 oxygen atoms
Varvara68 [4.7K]
1mol   ------------   3×6,02×10²³ oxygen atoms
x          ------------   2,55×10²⁴

x = 2,5×10²⁴ × 1mol / 3×6,02×10²³ ≈ 0,138*10 mol = 1,38mol

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How many valence electrons does B (boron) have?<br> A. 13<br> B. 5<br> C. 10<br> D. 3
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Boron has 3 valence electrons

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A student practicing for the outdoor track team begins to sweat. To what stimulus is the body responding?
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A student practicing for the outdoor track team begins to sweat. To what stimulus is the body responding?

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Which statement is true for a solution when its concentration of hydroxide ions increases? It becomes more acidic. It becomes le
makvit [3.9K]

Answer:

Its pH value increases.

Explanation:

pH is the measure of alkalinity or acidity of a compound.

pH = - log [H+]

and pH + pOH = 14

where pOH is the measure of basicity of a solution, given by -log[OH-]

As a solution gets more basic that is higher [OH-], the pH increases, and on the other hand, as the pH of a solution decreases by one pH unit, the concentration of H+ increases by ten times.

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Which of the following is the correct balanced equation for the reaction in which methane (CH4) burns in atmospheric oxygen (0₂)
Talja [164]

Answer: \text{CH}_{4}+2\text{O}_{2} \longrightarrow \text{CO}_{2}+2\text{H}_{2}\text{O}

Explanation:

The unbalanced equation is

\text{CH}_{4}+\text{O}_{2} \longrightarrow \text{CO}_{2}+\text{H}_{2}\text{O}

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\boxed{\text{CH}_{4}+2\text{O}_{2} \longrightarrow \text{CO}_{2}+2\text{H}_{2}\text{O}}

8 0
2 years ago
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