All categories

3 years ago

Given the reaction: 4A1 + 302 - 2A1,O, How many grams of Al will be

Chemistry

1 answer:

dlinn [17]3 years ago

4 0

Answer:

The answer to your question is 27 g of Al

Explanation:

Data

mass of Al = ?

moles of Al₂O₃ = 0.5

The correct formula for the product is Al₂O₃

Balanced chemical reaction

4Al + 3O₂ ⇒ 2Al₂O₃

Process

1.- Calculate the molar mass of the product

Al₂O₃ = (27 x 2) + (16 x 3)

= 54 + 48

= 102 g

2.- Convert the moles of Al₂O₃ to grams

102 g ---------------- 1 mol

x ---------------- 0.5 moles

x = (0.5 x 102) / 1

x = 51 g of Al₂O₃

3.- Use proportions to calculate the mass of Al

4(27) g of Al --------------- 2(102) g of Al₂O₃

x --------------- 51 g

x = (51 x 4(27)) / 2(102)

x = 5508 / 204

x = 27 g of Al

You might be interested in

Why do all atoms of an element have the same atomic number, although they may have

Evgesh-ka [11]

Answer:

Here’s what I get.

Explanation:

The atomic number is the number of protons in the nucleus of an atom.
The number of protons determines the number of electrons.
The number of electrons determines the chemical properties of the element,

Thus, the atomic number determines the identity of the element.

The atomic mass does not affect the chemical properties, so different isotopes of an element behave alike.

5 0

3 years ago

What is the molecular formula for C5H7 if its molar mass is 536 g/mol?

hodyreva [135]

Answer:

(C5H7)8

Explanation:

It's empirical formula is given as; C5H7

Molar mass of carbon(C) = 12 g/mol

Molar mass of hydrogen(H) = 1 g/mol

We are told that it's molar mass is 536 g/mol.

To find the molecular formula;

Molecular formula = n × empirical formula

Thus;

n = 536/((12 × 5) + (1 × 7))

n = 8

Thus;

Molecular formula = (C5H7)8

8 0

3 years ago

Write the products of these double-replacement reaction. Then balance each equation. a) NaOH(aq) + Fe(NO3)3 (aq)---> Iron (II

pashok25 [27]

Answer:

3NaOH (aq) + Fe(NO₃)₃ (aq) → Fe(OH)₃ (s) + 3NaNO₃ (aq)

Explanation:

Step 1: RxN

NaOH (aq) + Fe(NO₃)₃ (aq) → Fe(OH)₃ (s) + NaNO₃ (aq)

Step 2: Balance RxN

We need 3 OH's on both sides.

We also need 3 NO₃'s on both side.

This will make it so we also need 3 Na's on both side

3NaOH (aq) + Fe(NO₃)₃ (aq) → Fe(OH)₃ (s) + 3NaNO₃ (aq)

6 0

3 years ago

Describe the environmental impacts that are involved during the design, research and development, and marketing phases of cell p

Debora [2.8K]

Answer:

joe mama

Explanation:

400 + 20 + 420

4 0

3 years ago

A given volume of methane diffuses in 20 seconds. How long will it take the same volume of hydrogen to diffuse under the same co

Airida [17]

The time taken for the same volume of methane gas to diffuse is 7.1 s.

<h3>Rate of gas diffusion</h3>

The rate at which a given mass of diffuses is inversely proportional to the molar mass of the gas.

$\frac{t_2}{t_1} = \sqrt{\frac{M_2}{M_1} }$

where;

M1 is the molar mass of methane (CH4) = 16 g
M2 is the molar mass of hydrogen as = 2
t1 is time taken for methane = 20 s
t2 is the time taken for hydrogen = ?

$\frac{t_2}{t_1} = \sqrt{\frac{M_2}{M_1} }\\\\\frac{t_2}{20} = \sqrt{\frac{2}{16} }\\\\\frac{t_2}{20} = \frac{\sqrt{2} }{4} \\\\t_2 = \frac{20\sqrt{2} }{4} \\\\t_2 = 5\sqrt{2} \\\\t_2 = 7.1 \ s$

Thus, the time taken for the same volume of methane gas to diffuse is 7.1 s.

Learn more about rate of gas diffusion here: brainly.com/question/26696466

6 0

2 years ago

Read 2 more answers