What is the name of the the following formula Cd(HOOCCOO)2

A student determines the aluminum content of a solution by first precipitating it as aluminum hydroxide, and then decomposing th

Vladimir [108]

Answer: The student should obtain 1.103 g of aluminum oxide 

Explanation:

First we write down the equations that represent the aluminum hydroxide precipitation from the reaction between the aluminum nitrate and the sodium hydroxide:

Al(NO3)3 + 3NaOH → 3NaNO3 + Al(OH)3

Now, the equation that represents the decomposition of the hydroxide to aluminum oxide by heating it.

2Al(OH)3 → Al2O3 + 3H2O

Second, we gather the information what we are going to use in our calculations.

Volumen of Al(NO3)3 = 40mL

Molar concentration of Al(NO3)3 = 0.541M

Molecular Weight Al2O3 = 101.96 g/mol

Third, we start using the molar concentration of the aluminum nitrate and volume used to find out the total amount of moles that are reacting

$\frac{0.541moles Al(NO3)3}{1L} x\frac{1L}{1000mL} x 40mL Al(NO3)3 = 0.022moles Al(NO3)3$

then we use the molar coefficients from the equations to discover the amount of Al2O3 moles produced

$0.022moles Al(NO3)3 x \frac{1mol Al(OH)3}{1mol Al(NO3)3} X\frac{1mol Al2O3}{2molAl(OH)3} = 0.011 moles Al2O3$

finally, we use the molecular weight of the Al2O3 to calculate the final mass produced.

$0.011moles Al2O3 x \frac{101.96g Al2O3}{1mol Al2O3} = 1.103g Al2O3$

4 0

4 years ago

The alchemical, medical, and technological traditions were precursors to chemistry. State a contribution that each made to the d

Kisachek [45]

Alchemy was a form of early chemistry that aimed to transmute base metals into gold and to create an elixir of longevity or eternal life.

Despite these connotations of the mythic and mystical, alchemical follow contend a crucial role within the evolution of contemporary science.

Historically, alchemy refers to each the investigation of nature and an early philosophical and religious discipline that combined chemistry with metal work. Alchemy additionally encompassed physics, medicine, astrology, mysticism, spiritualism, and art.

Chemistry in medicine:

Major contributions to health care have been made possible by chemistry. The development of new drugs involves chemical analysis and synthesis to form new compounds.

Chemistry contributes to the preparation of materials for surgery (sutures, artificial skin, and sterile materials). The sutures used in many surgeries today do not have to be removed, because they simply dissolve in the body after a period of time. Replacement blood vessels for heart and other types of surgery are often made of chemicals that do not react with the tissues, so they will not be rejected by the body and this was made possible with the help of the chemistry.

Chemistry in technologies:

The Iron Age, saw the prevalence of iron increase as the major metal of choice for cutting tools and weapons. Iron was slower to evolve as a material because it required higher temperatures to work the metal. This shift saw a change in smelting practices, improved furnace technologies, and also the development of forging, as opposed to the casting techniques used in the Bronze Age.

Now a days, in big industries, the machines which are made up of big metal sheets or metals, are given shape with the help of fire, by the process of Smelting. The industries tried to make plastics afterwards.

To know more about Alchemy, refer to this link:

brainly.com/question/5997100

#SPJ4

4 0

2 years ago

Overlap of the electron clouds of two atoms results in a(n)

xxMikexx [17]

We know that the electron clouds of two atoms overlapping is a bond, because that signifies that the electrons are being shared in a bond.

So, I'm going to go through some definitions of these different types of bonds, because they have very specific circumstances.

A hydrogen bond is a bond between an electronegative atom and a hydrogen molecule (which is not what this question says, this isn't stated anywhere).

A dipole is a difference in electron density on two different atoms (so this isn't even close to what the question is stating, a dipole is not even a bond)

An ionic bond is an unequal sharing of electrons between two atoms (because the question doesn't state this specific fact, then it can't be this option).

By process of elimination, we know the answer is covalent bond, but just in case, we can also look at the definition of a covalent bond: a bond that involves the sharing of electrons between atoms.

That is exactly what the question is asking for! Therefore, your answer is d. covalent bond

8 0

3 years ago

Based on the reaction below:

Sidana [21]

N₂ + 3H₂ ⇄ 2NH₃ + heat

In the given equilibrium, we notice that the heat is on the right. which means that if the heat requirements don't meet, the reactants on the right will no longer react due to the lack of heat

but because the reactants on the left don't have such weaknesses, they will keep reacting hence producing more and more ammonia until a new equilibrium is reached

where there will be more ammonia and less nitrogen and hydrogen as compared to the equilibrium we had initially

5 0

3 years ago

Read 2 more answers

Which of the following is NOT a substance?

Nadusha1986 [10]

I believe the answer is d Air

7 0

3 years ago

Read 2 more answers