3 years ago

I WILL GIVE EXTRA POINTS AND BRAINLIEST I JUST NEED SOMEONE TO ANSWER THIS QUESTIONS!!

Chemistry

2 answers:

olga nikolaevna [1]3 years ago

8 0

Answer:

Explanation:

Rufina [12.5K]3 years ago

8 0

The answer is A I think

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when carbon dioxide is bubbled through lime water the solution first turn milky and to colour less . Explain why these changes o

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Answer:

When excess of carbon dioxide is passed in lime water, calcium carbonate is converted to calcium bicarbonate which is soluble, hence the milkiness due to calcium carbonate disappears.

Explanation:

Ca(OH)2+CO2 → CaCO3 (Milkiness) ↓+H2O

CaCO3+H2O+CO2 → Ca(HCO3)2 (soluble)

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truck it

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With white light, a team measured a 0.7% percent change with 3.5g of plant matter in a one liter container. Convert

Strike441 [17]

moles CO₂ = 5.57.10⁻⁴

<h3>Further explanation </h3>

A mole is a number of particles(atoms, molecules, ions) in a substance

Can be formulated :

$\tt mol=\dfrac{mass}{MW}$

0.7% percent change with 3.5g of plant matter

mass :

$\tt 0.7\%\times 3.5~g=0.0245~g$

moles :

$\tt moles=\dfrac{0.0245}{44}=0.000557=5.57.10^{-4}$

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Banana dipped in liquid experiments

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Https://www.youtube.com/watch?v=LXDG0nqYdR4

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