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4 years ago

Seven hundred twenty centimeters is how many liters

Chemistry

2 answers:

shutvik [7]4 years ago

8 0

It would be 0.72 liters

IrinaVladis [17]4 years ago

5 0

It should be 0.72 liters

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Chemical or physical change? and what made you think such?

spayn [35]

Answer:

it's a chemical change and an electrolytic reaction

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4 years ago

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A student carries out the same titration but uses an indicator instead of a pH meter. If the indicator changes color slightly pa

creativ13 [48]

Answer:

Too high a value

Explanation:

HA + NaOH ⟶ NaA +H₂O

If the student has gone slightly past the equivalence point, they have added too much base.

The moles of HA are directly proportional to the moles of NaOH, so the moles of acid that the student calculates will be too high.

The calculated concentration of acid will also be too high.

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4 years ago

Which list of elements is arranged in order of increasing atomic radii?

goldfiish [28.3K]

The lost of element arranged in order of increasing Atomic radii is 4) F, CI, Br, I.

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3 years ago

What mass of Al2(SO4)3 results from mixing 12.93 g of AlCl3 with 10.34 g of (NH4)2SO3 as shown with a 54.2% yield?

avanturin [10]

Mass of Al₂(SO₄)₃ : 4.822 g

<h3>Further explanation </h3>

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

2AlCl₃ + 3(NH₄)₂SO₄⇒Al₂(SO₄)₃+ 6NH₄Cl

MW AlCl₃ :133,34 g/mol

MW (NH₄)₂SO₄ : 132,14 g/mol

MW Al₂(SO₄)₃ : 342,15 g/mol

mol AlCl₃

$\tt mol=\dfrac{12.93}{133.34}=0.097$

mol (NH₄)₂SO₄

$\tt mol=\dfrac{10.34}{132.14}=0.078$

Limitng reactants (ratio mol : coefficient = the smaller)

AlCl₃ : (NH₄)₂SO₄ =

$\tt \dfrac{0.097}{2}:\dfrac{0.078}{3}=0.0485:0.026$

(NH₄)₂SO₄ ⇒ limiting reactants

So mol Al₂(SO₄)₃ from (NH₄)₂SO₄

$\tt \dfrac{1}{3}\times 0.078=0.026$

mass Al₂(SO₄)₃

$\tt 0.026\times 342.15=8.896$

with 54.2% yield, the mass of Al₂(SO₄)₃

$\tt 0.542\times 8.896=4.822~g$

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3 years ago

What is the highest occupied energy level for an atom of copper (Cu)? *

bonufazy [111]

Answer:

third energy level - 18

hope this helps

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3 years ago