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3 years ago

can someone help me with this please i will give you brainliest and answer whatever question you need help on as well

Chemistry

2 answers:

Rom4ik [11]3 years ago

5 0

Answer:

$jieeeeeerrrrrr$

Explanation:

Ira Lisetskai [31]3 years ago

4 0

Well technically I think this is hard to solve but I’ll give it a try

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Why can alkaline batteries not be recharged

LUCKY_DIMON [66]

Answer:

The biggest risk with recharging alkaline batteries is leakage. As you probably know, alkaline batteries leak even under normal circumstances. Internal off gassing, made worse by heat, creates pressure that can breach battery seals. Therefore, the risk of leakage is an even bigger risk when recharging.

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2 years ago

If a solution initially contains 0.260 M HC2H3O2, what is the equilibrium concentration of H3O+ at 25 ∘C? Express your answer in

arlik [135]

Answer:

2.16 × 10⁻³

Explanation:

Step 1: Given data

Concentration of the acid (Ca): 0.260 M

Acid dissociation constant (Ka): 1.80 × 10⁻⁵

Step 2: Write the acid dissociation equation

HC₂H₃O₂(aq) + H₂O(l) ⇄ C₂H₃O₂⁻(aq) + H₃O⁺(aq)

Step 3: Calculate the concentration of H₃O⁺ at equilibrium

We will use the following expression.

$[H_3O^{+} ]= \sqrt{Ka \times Ca } = \sqrt{1.80 \times 10^{-5} \times 0.260 } = 2.16 \times 10^{-3}$

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3 years ago

The chart shows the eight most common elements on Earth. Seventy-five percent of Earth's crust is made up of just two elements -

zzz [600]

Answer:

Explanation:

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3 years ago

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3 years ago

Milk milk milk........

pav-90 [236]

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