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3 years ago

Balance the reaction and determine which of the following coefficients

Chemistry

1 answer:

tatiyna3 years ago

6 0

Answer:

B. The correct ratio is 3:1:1:3

Explanation:

According to this question, the following chemical equation was given:

CH3COOH + Al(OH)3 → Al(CH3COO)3 + H2O

This equation is obviously not balanced because the number of atoms of each element on both sides of the equation is not equal or the same. To balance the equation, we make use of coefficients as follows:

3CH3COOH + Al(OH)3 → Al(CH3COO)3 + 3H2O

- There are now 6 moles of C on each side

- There are now 15 moles of H on each side

- There are now 9 moles of O on each side

- There is now 1 mole of Al on each side

The correct ratio of each compound is in the order 3:1:1:3

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Why is the time series useful as a management tool?

katrin [286]

Answer:

Explanation:

It estimates the probability of extinction.

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3 years ago

When 12.71 g of copper react with 8.000 g of sulfur, 14.72 g of copper(I) sulphide is produced. What is the percentage yield in

Citrus2011 [14]

2Cu + S = Cu₂S

n(Cu)=m(Cu)/M(Cu)
n(Cu)=12.71/63.55=0.2 mol

n(S)=m(s)/M(S)
n(S)=8.000/32.01=0.25 mol

Cu:S 2:1
0.2 mol : 0.25 mol copper deficiency, sulphur in excess

theoretical mass of copper (I) sulfide
m(Cu₂S)=M(Cu₂S)n(Cu)/2

the percentage yield in the reaction is
w=m'(Cu₂S)/m(Cu₂S)=2m'(Cu₂S)/M(Cu₂S)n(Cu)
w=2*14.72/(159.16*0.2)=0.925 (92.5%)

5 0

3 years ago

Read the descriptions below of two substances and an experiment on each. Decide whether the result of the experiment tells you t

Lelu [443]

Answer:

Sample A - mixture

Sample B- Mixture

Explanation:

Looking at sample A, we can see that as water was poured over sample A, the sample was separated into its components as the powder disappeared leaving behind a gritty black sand-like material on the surface of the paper. A separation of the mixture has taken place.

In sample B, we can clearly see that it is a mixture because the amount of solid recovered is much less than the total mass of the solid put into the beaker. The sample must have been separated into its components.

8 0

3 years ago

What is spina bifida?

sdas [7]

Answer:

Spina bifida is a condition that affects the spine and is usually apparent at birth. It is a type of Neural Tube Defect (NTD).

8 0

3 years ago

Determine the number of moles in 3.13 × 10²³ formula units of MgCl₂.

love history [14]

Answer:

<h2>0.52 moles </h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{3.13 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{3.13}{6.02} \\ = 0.519933$

We have the final answer as

<h3>0.52 moles</h3>

Hope this helps you

3 0

3 years ago