All categories

2 years ago

2 Al + 3 H2SO4 --> Al2(SO4)3 + 3 H2

Chemistry

1 answer:

suter [353]2 years ago

3 0

Answer:

The answer to your question is 0.15 g of H₂

Explanation:

Data

mass of H₂ =

mass of H₂SO₄ = 7.5 g

Balanced chemical reaction

2Al + 3H₃SO₄ ⇒ Al₂(SO₄)₃ + 3H₂

Process

1.- Calculate the molar mass of hydrogen and sulfuric acid

H₂ = 3(2) = 6 g

H₂SO₄ = 2 + 32 + (16 x 4) = 3 x 98 g = 294 g

2.- Use proportions to solve this problem

294 g of H₂SO₄ ---------------- 6 g of H₂

7.5 g of H₂SO₄ ---------------- x

x = (7.5 x 6)/294

x = 45/294

x = 0.15 g of H₂

You might be interested in

The town in the video stressed using locally made goods instead of imported goods. How could using locally made goods lower CO2

ladessa [460]

Answer:

It reduces the need to import goods

Explanation:

When you buy locally, the products you buy don't come from far away, so they don't have to cross the country (or the ocean) by boat, plane or trucks to reach the market/store where you're buying, at least not from a long distance away.

The distance a vehicle travels, the less CO2 emissions it produces.

If the good you're buying is made/produced only an hour away, that's not much pollution produced compared as if the good has to come from a distant place spending days on highways to reach you.

6 0

3 years ago

When a piece of solid phosphorus is added to a flask containing chlorine gas, heat is evolved?

Sav [38]

White phosphorus burns spontaneously in chlorine to produce a mixture of two chlorides, phosphorus (ii) chloride and phosphorus(v) chloride and heat is evolved. Phosphorus (iii) chloride is a colorless fuming liquid:
P4 + 6Cl2 = 4PCl3
Phosphorus (v) chloride is an off-white solid
P4 +10Cl2 = 4PCl5

7 0

2 years ago

A tanker truck carrying 6.05×103 kg of concentrated sulfuric acid solution tips over and spills its load. The sulfuric acid solu

irinina [24]

Answer:

6,216.684 kilograms of sodium carbonate must be added to neutralize $6.05\times 10^3 kg$ of sulfuric acid solution.

Explanation:

Mass of sulfuric acid solution = $6.05\times 10^3 kg=6.05\times 10^6 g$

$1 kg = 10^3 g$

Percentage mass of sulfuric acid = 95.0%

Mass of sulfuric acid = $\frac{95.0}{100}\times 6.05\times 10^6 g$

$=5,747,500 g$

Moles of sulfuric acid = $\frac{5,747,500 g}{98 g/mol}=58,647.96 mol$

$H_2SO_4+Na_2CO_3\rightarrow Na_2SO_4+CO_2+H_2O$

According to reaction , 1 mole of sulfuric acid is neutralized by 1 mole of sodium carbonate.

Then 58,647.96 moles of sulfuric acisd will be neutralized by :

$\frac{1}{1}\times 58,647.96 mol=58,647.96 mol$ of sodium carbonate

Mass of 58,647.96 moles of sodium carbonate :

$106 g/mol\times 58,647.96 mol=6,216,683.76 g$

6,216,683.76 g = 6,216,683.76 × 0.001 kg = 6,216.684 kg

6,216.684 kilograms of sodium carbonate must be added to neutralize $6.05\times 10^3 kg$ of sulfuric acid solution.

3 0

3 years ago

16. Nuclear decay is a random event and

12345 [234]

Answer:

A. Is independent of other energy influences

Explanation:

Nuclear decay occurs at a constant rate. The rate of decay is independent of temperature.

B, C, and D are wrong. The decay rate cannot be sped up or slowed down at ordinary temperatures.

4 0

3 years ago

How many atoms of silver are present in one mole of silver

Whitepunk [10]

Answer:

The number of particles in 1 mole is called Avogadro's Number (6.0221421 x 1023). Calculate the number of atoms in 2.45 mol of copper. A silver ring contains 1.1 x 1022 silver atoms.

Explanation:

hope this helps

3 0

2 years ago