many grams of aluminum are required to produce 3.5 moles Al2O3 in the presence of excess O2?

Answers

Answer 1

The grams of aluminum that are required to produce 3.5 moles of AlO3 in presence of excess O2 is calculated as below

write the equation for reaction
4 Al + 3O2 =2 Al2O3

by use of mole ratio between Al to Al2O3 which is 4 :2 the moles of Al
=3.5 x4/2 = 7 moles

mass of Al = moles / x molar mass

= 7 moles x27 g/mol =189 grams

Answer 2

To produce 3.5 moles of aluminum oxide (Al₂O₃), you need 188.86 grams of aluminum (Al) in the presence of excess oxygen (O₂).

This is determined using the balanced chemical equation and molar masses.

To determine how many grams of aluminum (Al) are required to produce 3.5 moles of aluminum oxide (Al₂O₃) in the presence of excess oxygen (O₂), you need to use stoichiometry and the molar masses of the compounds involved.

The balanced chemical equation for the formation of aluminum oxide is:

4Al + 3O₂ → 2Al₂O₃

From the equation, 4 moles of aluminum (Al) produce 2 moles of aluminum oxide (Al₂O₃). This means that 2 moles of Al₂O₃ are produced from 4 moles of Al.

To find out how many moles of Al are needed for 3.5 moles of Al₂O₃, set up the proportion:

(4 moles Al / 2 moles Al₂O₃) = (x moles Al / 3.5 moles Al₂O₃)

Solving for x:

x = (4/2) * 3.5 = 7 moles of Al

The molar mass of Al is approximately 26.98 g/mol. To find the mass of 7 moles of Al:

7 moles Al * 26.98 g/mol = 188.86 g Al

Thus, 188.86 grams of aluminum are required to produce 3.5 moles of aluminum oxide in the presence of excess oxygen.

Related Questions

Why would it be incorrect to balance the equation by changing NaOH to Na2OH2 instead of 2NaOH

Answers

Beacuse Na2OH 2 is completely different compound than 2NaOH.

By NaOH we mean two molecules with one sodium, one hydrogen and one oxygen atom each.

But by Na2OH2 it'll be understood that 2 atoms of sodium one aton of oxygen and 2 arom of hydrogen was used ro make up this one molecule.

Here's a simple example,

You have
H2+ O2 ---------> H2O

while balancing,

you're supposed to write H2O as 2H2O
which means 2 molecules of water.

And when you write it as H2O2 insted it means that you are forming and oxidizing and reducing agent, which is a waste (toxic waste) for our body and can kill us, which means it has the opposite property of water.

And this is the reason why you should balance it by placing the numbers on the far left side than subsripting it below atom of different elements so that you can make the same compund everytime.

Which best explains why some radioisotopes decay in a decay series? Radioactive materials will always be radioactive. Multiple decays are always required to achieve stability. Some unstable materials decay radioactively into other unstable materials. Unstable materials have varying half-lives.

Answers

Which best explains why some radioisotopes decay in a decay series?

The correct answer is:
Some unstable materials decay radioactively into other unstable materials.

Radioactive decay a the spontaneous process through which an unstable atomic nucleus breaks into smaller, more stable fragments. It's basically a matter of thermodynamics. Every atom seeks to be as stable as possible. In the case of radioactive decay, instability occurs when there is an imbalance in the number of protons and neutrons in the atomic nucleus.

Answer:

c. Some unstable materials decay radioactively into other unstable materials.

Explanation:

got it correct on edg

Catalytic converters made of palladium (Pd) reduce automobile pollution by catalyzing the reaction between unburned hydrocarbons and oxygen. How does Pd increase the rate of this reaction?

A: By cooling the reactants
B: By splitting the oxygen atoms
C: By giving the hydrocarbons a negative charge
D: By decreasing the activation energy

Answers

Almost all catalysts work by lowering the activation energy of the reaction with no change in the free energy of the reaction

- So in this case we can say that palladium reduce automobile pollution by catalyzing the reaction between un-burned hydrocarbons and oxygen :

D. by decreasing the activation energy

Answer: D: By decreasing the activation energy

Explanation: A catalyst is a substance which increases the rate of a reaction by taking the reaction through a different path which involves lower activation energy and thus more molecules can cross the energy barrier and convert to products.

Activation energy is the extra energy that must be supplied to reactants in order to cross the energy barrier and thus convert to products.

The catalyst itself does not take part in the chemical reaction and is regenerated as such at the end.

Suppose you wanted to find out how many milliliters of 1.0 m agno3 are needed to provide 169.9 g of pure agno3? what is step 1 in solving the problem? calculate moles agno3 needed what is the molar mass of agno3? 169.87 g/mol how many milliliters of solution are needed?

Answers

m(AgNO₃) = 169.9 g; mass.
n(AgNO₃) = m(AgNO₃) ÷ M(AgNO₃).
n(AgNO₃) = 169.9 g ÷ 169.87 g/mol.
n(AgNO₃) = 1 mol; amount of silver nitrate.
c(AgNO₃) = 1 M = 1 mol/L.
V(AgNO₃) = n(AgNO₃) ÷ c(AgNO₃).
V(AgNO₃) = 1 mol ÷ 1 mol/L.
V(AgNO₃) = 1 L.
V(AgNO₃) = 1 L · 1000 mL/L.
V(AgNO₃) = 1000 mL; volume of silver nitrate.

You need 1000 milliliters of a 1.0 M AgNO3 solution to provide 169.9 g of pure AgNO₃.

Step 1: Calculate the moles of AgNO₃ needed. To do this, use the given molar mass of AgNO₃, which is 169.87 g/mol.

Moles = mass / molar mass

Moles of AgNO₃ = 169.9 g / 169.87 g/mol = 1.000 mol

Step 2: Determine the volume of the 1.0 M AgNO₃ solution required to obtain 1.000 mol of AgNO₃.

Molarity (M) = moles of solute / liters of solution

Rearranging the formula to solve for volume (liters):

Volume (L) = moles of solute / Molarity

Volume (L) = 1.000 mol / 1.0 M = 1.000 liters

Since the question asks for the volume in milliliters:

Volume (mL) = Volume (L) * 1000

Volume (mL) = 1.000 L * 1000 = 1000 mL

Therefore, you need 1000 milliliters of a 1.0 M AgNO₃ solution to provide 169.9 g of pure AgNO₃.

A gas contained in a steel tank has a pressure of 1.5 atm at a temperature of 320 k. what will be the gas pressure when the temperature changes to 450 k? a gas contained in a steel tank has a pressure of 1.5 atm at a temperature of 320 k. what will be the gas pressure when the temperature changes to 450 k? 1.5 atm 0.47 atm 0.94 atm 2.1 atm 1.1 atm

Answers

Using Gay-Lussac's Law, we have
P2 = [tex] \frac{(T2)X(P1)}{T1} [/tex]
where, P and T stands for pressure and temperature respectively, terms 1 and 2 indicates initial and final pressure/temperature respectively.

Given that, P1 = 1.5 atm, T1 = 320 K, T2 = 450 K,
∴P2 = [tex] \frac{(450)X(1.5)}{320} [/tex] = 2.1 atm

Final answer:

Using Gay-Lussac's Law, we calculate that when the temperature of a gas increases from 320 K to 450 K, the pressure of the gas will increase from 1.5 atm to 2.1 atm, assuming the volume and the amount of gas remain constant.

Explanation:

To answer the question, we need to use the concept in physics called Gay-Lussac's Law. This law states that the pressure of a given amount of gas held at a constant volume is directly proportional to the Kelvin temperature. It's also important to remember that when we're dealing with gases, temperatures have to be in Kelvin for our calculations to work.

Given that, we know that the initial pressure (P1) is 1.5 atm, the initial temperature (T1) is 320K, and the final temperature (T2) is 450K. We want to find the final pressure (P2). According to Gay-Lussac's law, this can be calculated using the following equation: P1/T1 = P2/T2.

Thus, P2 = P1 * T2 / T1 = 1.5 atm * 450K / 320K = 2.1 atm.

So, the gas pressure will be 2.1 atm when the temperature increases from 320 K to 450 K, assuming that the volume and the amount of gas remain constant.

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Abusive head trauma is usually associated with a parent or caregiver becoming angry or frustrated.
a. True
b. False

Answers

A true most cases are parental abuse

Which activity most likely involves the direct use of saturated hydrocarbons?

Answers

Saturated hydrocarbons, such as alkanes, are utilized in combustion processes for producing heat due to their single carbon-to-carbon bonds.

Saturated hydrocarbons, also known as alkanes, involve the direct use of hydrocarbons with only single carbon-to-carbon bonds. An example of an activity that most likely involves the direct use of saturated hydrocarbons is combustion processes for producing heat. These hydrocarbons are composed entirely of single bonds and are saturated with hydrogen.

Metallic copper is formed when aluminum reacts with copper(ii) sulfate. how many grams of metallic copper can be obtained when 54.0 g of al react with 319 g of cuso4? al + 3cuso4 â al2(so4)3 + 3cu

Answers

Answer is: 127 grams rams of metallic copper can be obtained.
Balanced chemical reaction: 2Al + 3CuSO₄ → Al₂(SO₄)₃ + 3Cu.
m(Al) = 54.0 g.
n(Al) = m(Al) ÷ M(Al).
n(Al) = 54 g ÷ 27 g/mol.
n(Al) = 2 mol.
m(CuSO₄) = 319 g.
n(CuSO₄) = 319 g ÷ 159.6 g/mol.
n(CuSO₄) = 2 mol; limiting reactant.
From chemical reaction: n(CuSO₄) : n(Cu) = 3 : 3 (1 : 1).
n(Cu) = 2 mol.
n(Cu) = 2 mol · 63.55 g/mol.
n(Cu) = 127.1 g.

Answer: 127 g

Explanation:

Consider the unbalanced equation for the oxidation of aluminum. _Al + _O2 mc031-1.jpg _Al2O3 Which sequence of coefficients should be placed in the blanks to balance this equation?

Answers

the options are
2, 3, 1
1, 3, 2
4, 3, 2
3, 2, 3

when balancing equation the masses should be balanced. In other words the same number of atoms of the same element should be on either side of the equation

the balanced equation for the oxidation of aluminium is as follows

4Al + 3O₂ ---> 2Al₂O₃
coefficients are the numbers in front of the respective compounds.
the coefficients in the correct sequence are 4,3 and 2

answer is 4, 3, 2

Answer:

the options are

2, 3, 1

1, 3, 2

4, 3, 2

3, 2, 3

when balancing equation the masses should be balanced. In other words the same number of atoms of the same element should be on either side of the equation

the balanced equation for the oxidation of aluminium is as follows

4Al + 3O₂ ---> 2Al₂O₃

coefficients are the numbers in front of the respective compounds.

the coefficients in the correct sequence are 4,3 and 2

answer is 4, 3, 2

The concentration of the stock solution she needs is 100 milli molar (mm) and she needs to make 1.2 milli liters (ml) solution of the drug-a. the drug is available in a salt form with a molecular weight of 181.6 grams / mole. what is the amount (quantity in grams) of drug-a will she have to weigh-out in order to make the stock solution

Answers

molarity is defined as the number of moles of solute in 1 L of solution
molarity of stock solution to be prepared - 100 x 10⁻³ mol/L
volume of stock solution to be prepared - 1.2 mL
Therefore number of moles in 1.2 mL - 100 x 10⁻³ mol/L x 1.2 x 10⁻³ L
number of moles of drug - 1.2 x 10⁻⁴ mol
mass of drug required - 1.2 x 10⁻⁴ mol x 181.6 g/mol = 21. 8 mg
21.8 g of drug is required to make the stock solution

The net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide is ________.
a.h+ (aq) + hso4- (aq) + 2oh- (aq) → 2h2o (l) + so42- (aq)
b.h+ (aq) + hso4- (aq) + 2na+ (aq) + 2oh- (aq) → 2h2o (l) + 2na+ (aq) + so42-(aq)
c.so42- (aq) + 2na+ (aq) → 2na+ (aq) + so42-(aq)
d.h+ (aq) + oh- (aq) → h2o( l)
e.2h+ (aq) + so42- (aq) + 2na+ (aq) + 2oh- (aq) → 2h2o (l) + 2na+ (aq) + so42- (aq)

Answers

Final answer:

The net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide is h+ (aq) + oh- (aq) → h2o (l). Here, the sodium ions are spectator ions and are thus not included in the net ionic equation.

Explanation:

The question asks about the net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide. Remember, a net ionic equation includes only those components that undergo a change. Spectator ions are not included. In this case, the correct answer is (d) h+ (aq) + oh- (aq) → h2o (l). This equation represents the essential acid-base reaction that occurs. The sodium ion is a spectator ion in this reaction. Hence, it is not included in the net ionic equation.

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The electrolysis of molten alcl3 for 3.25 hr with an electrical current of 15.0 a produces ________ g of aluminum metal.

Answers

Final answer:

Approximately 200.6 grams of Aluminum will be produced from the electrolysis of molten AlCl3 for 3.25 hours with an electrical current of 15.0 A, as determined through application of Faraday's law of electrolysis.

Explanation:

In order to determine the number of grams of aluminum produced from electrolysis of molten AlCl3, we need to use Faraday's law of electrolysis.

Faraday's law states that the amount of substance produced at an electrode during electrolysis is directly proportional to the number of moles of electrons (or amount of electrical charge) transferred at that electrode. The charge Q in coulombs (C) can be calculated using the formula Q = It, where I is the current in amperes (A) and t is the time in seconds.

For this scenario, we know that the current I is 15.0 A and the time t is 3.25 hours, which needs to be converted to seconds for the equation to work properly (3.25 hr × 3600 s/hr = 11700 s). Hence, Q = 15.0 A × 11700 s = 175500 C.

The quantity of a substance produced in an electrolytic cell is given by the equation m = Q × M / F × n, where M is the molar mass of the substance, F is Faraday's constant (~96485 C/mol), and n is the number of electrons transferred per formula unit of the substance. In this case, M = 26.98 g/mol for Al, n = 3 for Al3+, so m = 175500 C × 26.98 g/mol / (96485 C/mol × 3) = 200.6 g

Therefore, approximately 200.6 g of Aluminum will be produced from the electrolysis of AlCl3 in 3.25 hours with an electrical current of 15.0 A.

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If a frog initially contained 2 grams of carbon-14 and the half-life of carbon-14 is 5,730 years, how much carbon-14 remains in the frog after 5,730 years?

Answers

Half life is the time taken for a radioactive isotope to decay by half its original mass. In this case the half life of carbon-14 is 5.730 years.
Using the formula;
New mass = original mass × (1/2)^n; where n is the number of half lives (in this case n=1 )
New mass = 2 g × (1/2)^1
= 1 g
Therefore; the mass of carbon-14 that remains will be 1 g

What is a solution that has a relatively low amount of solute called?

Answers

Answer:
A solution that has a relatively low amount of solute is called Dilute Solution.

Explanation:
Solutions are homogeneous mixtures of two components called as solute and solvent. Solvent is the major part while solute constitutes the minor part of the solution.
In solutions the concentration of solute in solvent is further classified as Dilute and Concentrated.
Those solutions in which higher concentration of solute is present in given volume of solvent are called as Concentrated Solutions. For example adding 4 spoons of sugar in tea cup.
While, Those solutions in which less concentration of solute is present in given volume of solvent are called as Dilute Solutions. For example adding half spoon of sugar in tea cup.

Final answer:

A dilute solution has a relatively small amount of solute compared to the solvent. Qualitative terms like 'dilute' and 'concentrated' describe the concentration of solutes in a solution, but for precise measurements, a quantitative expression of concentration is necessary.

Explanation:

A solution with a relatively low amount of solute is referred to as a dilute solution. This term contrasts with a concentrated solution, which contains a larger quantity of solute. In a dilute solution, the solute is present in a lower concentration compared to the solvent, which is the substance present in a higher concentration.

When discussing the concentration of solutions, it is essential to express it quantitatively for precision. However, qualitative descriptors such as 'dilute' and 'concentrated' are commonly used. The meaning of these terms can vary depending on several factors, such as the nature of the solute and solvent, as well as the context in which they are used.

For example, a solution containing 1 gram of salt in 1 liter of water is more dilute than a solution containing 10 grams of salt in the same amount of water. The latter would be considered more concentrated. Both terms are relative and describe the amount of solute dissolved in a solvent without precisely quantifying the concentration.

During _____, bonds between monomers are broken by adding water.

A.
hydrolysis

B.
polymerization

C.
dehydration synthesis

D.
carbohydrate loading

Answers

During _A. hydrolysis, bonds between monomers are broken by adding water.
Prefix "hydro-" means water.
"-lysis" - disintegration.

Which type of monomer makes up lipids?

A) monosaccharides

B) triglycerides

C) nucleotides

D) amino acids

Answers

Monomers are generally small molecules that make up a long polymeric chain. The monomer for lipids is triglycerides.

What are triglycerides?

A triglyceride is an ester consisting of three fatty acids and glycerol. Triglycerides are the main components of human body fat.

Lipids are made up of long chains of triglycerides.

Thus, the correct option is B.

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In this reaction, what roll does the lead (II) nitrate play when 50.0 mL of 0.100M iron (III) chloride are mixed with 50.0 mL of 0.100M lead (II) nitrate?

Answers

Lead(II) nitrate will react with iron(III) chloride to produce the precipitate lead(II) chloride as shown in the balanced reaction
2FeCl3(aq) + 3Pb(NO3)2(aq) → 2Fe(NO3)3(aq) + 3PbCl2(s)
Calculating the amount of the precipitate lead(II) chloride each reactant will produce:
mol PbCl2 = 0.050L Pb(NO3)2 (0.100mol/1L)(3mol PbCl2/3mol Pb(NO3)2)
= 0.00500mol PbCl2
mol PbCl2 = 0.050L FeCl3 (0.100mol FeCl3/1L)(3mol PbCl2/2mol FeCl3) = 0.00750mol PbCl2
The reactant Pb(NO3)2 produces a lesser amount of the precipitate PbCl2, therefore, the lead(II) nitrate is the limiting reagent for this reaction.

Answer: iron (III) chloride is the excess reactant in the reaction.

Explanation:

i just did the assignment

According to the kinetic theory, what is the kinetic energy of a gas molecule proportional to? volume of the gas pressure of the gas temperature of the gas density of the gas

Answers

ANSWER: C temperature of the gas

Answer:

Explanation:

It's correct for Plato

When potassium hydroxide and barium chloride react, potassium chloride and barium hydroxide are formed. The balanced equation for this reaction is _____. *

Answers

The answer is 2KOH + BaCl2 --> 2KCl +

2 KOH + BaCl2 = 2 KCl + Ba(OH)2

For a cell whose potential is -0.46 v with 3 moles of electrons exchanged, what is DG?
DG = -nFE°cell

a.) -133 kJ
b.) +133 kJ
c.) +133,170 kJ
d.) -6.65 x 10^-3

Answers

ΔG = -nEF

ΔG = Gibbs free energy change
n = moles of electrones participated in
E = Electrode potential
F = Faraday constant

By substituting,
ΔG = -(3 mol) x 96485 A S/ mol x (-0.46) V
= + 133149.3 J
= + 133 kJ

Hence the answer is "b".

Since ΔG is a positive value, the reaction is non spontaneous reaction.

How many ethyne molecules are contained in 84.3 grams of ethyne (C2H2)?

Answers

(~26grams/mole) and Avogadros # (6.022x10^23) 84.3grams x 1mole/26grams x 6.022x10^23 molecules/mole = 1.95x10^24 molecules of C2H2

Explanation:

According to the mole concept, there are [tex]6.022 \times 10^{23}[/tex] atoms or molecules present in 1 mole.

As, it is given that mass of ethyne is 84.3 g. Hence, calculate its number of moles as follows.

No. of moles = [tex]\frac{mass}{\text{molar mass}}[/tex]

= [tex]\frac{84.3 g}{26.04 g/mol}[/tex]

= 3.24 mol

Therefore, calculate number of ethyne molecules as follows.

[tex]3.24 mol \times 6.022 \times 10^{23}[/tex] atoms

= [tex]19.51 \times 10^{23}[/tex] atoms

Thus, we can conclude that there are [tex]19.51 \times 10^{23}[/tex] atoms in 84.3 grams of ethyne.

In the reaction 2NaOH + H2SO4 → Na2SO4 + 2H2O, 80 grams of NaOH reacts with H2SO4 to form _______ grams of Na2SO4. Fill in the blank.

Your answer:

142 g

114 g

33.1 g

250 g

NEED HELP!!!! AND IF YOU KNOW THE ANSWER CAN YOU EXPLAIN IT.

Answers

Answer:
Option-A, 142 g is the correct answer.

Solution:
Balance Chemical Equation is as follow,

2 NaOH + H₂SO₄ → Na₂SO₄ + 2 H₂O

According to equation,

79.98 g (2 mole) NaOH react to form = 142 g (1 mole) of Na₂SO₄
So,
80 g NaOH on reaction will produce = X g of Na₂SO₄

Solving for X,
X = (142 g × 80 g) ÷ 79.99 g

X = 142.01 g of Na₂SO₄

A geometric isomer with two alkyl groups on the same side of the carbon-carbon double bond is called

Answers

Answer:
A geometric isomer with two alkyl groups on the same side of the carbon-carbon double bond is called cis Isomer.

Explanation:
Geometric isomerism takes place about the double bond in alkenes when the alkyl groups are either situated at the same side (cis) or are situated opposite (trans) to each other.

Example:
cis-2-Butene (highlighted red)

trans-2-Butene (highlighted blue)

When placed in water, ice rises to the top of the liquid. unlike most solids that sink when placed in their liquid forms, ice floats because -?

Answers

ice has a lower density than liquid water which is why it floats, it is also why water expands when it freezes.

An attraction between molecules on the surface of a liquid Is a what?

Answers

The answer is Surface Tension. An attraction between molecules on the surface of a liquid Is a Surface Tension. It is the film-like quality on the surface of a liquid that is caused by the attraction of the liquid molecules to themselves.

What is the energy required to go from liquid to gas called answers?

Answers

Answer:
The energy required to go from liquid to gas is called as Latent Heat of Vaporization.

Explanation:
The process of conversion of liquid into gas phase is known as vaporization while the conversion of gas into liquid state is called as condensation. The liquid having stronger intermolecular forces than gases require some energy to break those interactions hence, the heat provided to break these interactions and convert it into gas phase is called as heat of vaporization. Remember, heat of vaporization and heat of condensation are same for a given substance but with different signs.

Example:

Heat of Vaporization of Water = 40.65 kJ/mol

Heat of Condensation of Water = - 40.65 Kj/mol

Answer: Latent Heat of Vaporization

Atmospheric pollution is the worst when: natural gas is burned coal is burned geothermal heat is used to generate electricity

Answers

The answer is Coal. Atmospheric pollution is least when geothermal electricity is used to produce electricity.

The molality of a solution containing 8.1 moles of solute in 4847 g of solvent is ____.

Answers

molality is defined as the number of moles of solute in 1 kg of solvent
the number of moles of solute - 8.1 mol
mass of solvent - 4847 g
there are 8.1 mol in 4847 g of solvent
we need to know how many moles are in 1 kg of solvent
therefore number of moles in 1 kg of solvent is - 8.1 mol / 4.847 kg
molality of solution is - 1.67 mol/kg

Answer:

1.67m

Explanation:

Carbon disulfide is prepared industrially by reacting carbon with sulfur dioxide according to the above equation. if 5.9 moles of carbon react, how many moles of cs2 are produced?

Answers

Answer:
1.18 mol of CS₂

Solution:
The reaction is as follow,

5 C + 2 SO₂ → CS₂ + 4 CO

According to equation,,

5 moles of Carbon on reaction produced = 1 mole of CS₂
So,
5.9 moles of Carbon will produce = X g of CS₂

Solving for X,
X = (1 mol × 5.9 mol) ÷ 5 mol

X = 1.18 mol of CS₂

Answer : The number of moles of carbon sulfide produced are, 1.18 moles.

Explanation : Given,

Moles of carbon = 5.9 moles

The balanced chemical reaction is:

[tex]5C+2SO_2\rightarrow CS_2+4CO[/tex]

From the balanced chemical reaction we conclude that,

As, 5 moles of carbon react to give 1 mole of carbon sulfide

So, 5.9 moles of carbon react to give [tex]\frac{5.9}{5}=1.18[/tex] mole of carbon sulfide

Thus, the number of moles of carbon sulfide produced are, 1.18 moles.

Which of the following bases can be ingested safely?
aluminum hydroxide
sodium hydroxide
calcium hydroxide
ammonia

Answers

lol, hey cece. :) its A. Aluminum hydroxide, but you can just use inspect element. Those pictures are the answers. I already sent them

Final answer:

Aluminum hydroxide can be safely ingested in small amounts as it's used in antacids, while sodium hydroxide, calcium hydroxide, and ammonia have various uses but are not safe to ingest in their industrial forms.

Explanation:

The student is asking about which bases can be safely ingested. Among the options given, aluminum hydroxide is a compound that can be ingested safely in small amounts, as it is often used in antacids to combat excess stomach acid. Sodium hydroxide, commonly found in drain cleaner, and calcium hydroxide, though it is used in food processing, must be consumed in very limited amounts because of their high reactivity and potential for causing harm. Ammonia is a weak base and is used in cleaning products; it should not be ingested due to its toxicity. It is important to note that while some bases can be ingested in medicinal or food-grade forms, their industrial counterparts used in cleaning and other products can be harmful and should not be ingested.

Other Questions

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