CHEMISTRY HIGH SCHOOL

Why did the U.S. and Allied forces invade Afghanistan after 9/11?A. They knew the Taliban was responsible for the attacks.
B. They knew the Ba'ath Party was responsible for the attacks.
C. They knew that Afghanistan was harboring Osama bin Laden and other members of al-Qaeda.
D. They knew that Afghanistan was building a nuclear arsenal and planning to use dirty bombs on the U.S.

Answers

Answer 1
Answer:

The answer is C. They knew that Afghanistan was harboring Osama bin Laden and other members of al-Qaeda.

Related Questions

There are moles of carbon in 6.64 moles of CCl2F2
 Ions are electrically charged particles that are formed when certain compounds are dissolved in water. These solutions will conduct electricity. The Swedish scientist Svante Arrhenius coined the term ion (which means wanderer) to explain why solutions of electrolytes will conduct an electric current. When an electrolyte forms into a solution, it dissolves or dissociates into ions, a process called ionization. If a substance does not ionize, it will not conduct an electric current. Electrolytes include most acids, bases, and salts. Some conductors include hydrogen and sodium chloride, copper sulfate, and potassium nitrate. Substances that are not electrolytes include distilled water, sugar water, and most organic compounds. Which of the following is a non-electrolyte?  A) H 2 SO 4 (sulfuric acid)B) HCL (hydrochloric acid)C) C 3 H 8 (propane gas)D) NaCl (table salt)
Which best describes emerging scientific ideas?
Nonmetals make up the largest grouping of elements on the periodic table. answer True or False
What two things determine whether a molecule is polar?Check all that apply. A.The size of the atoms that make up the molecule B.Whether or not there are bonds of two atoms of unequal electronegativity C.Whether there is a double bond D.The shape of the molecule

60 ml of a 0.40 m solution of h2so4 is used to neutralize 0.3 m magnesium hydroxide solution, what is the ml of sodium hydroxide?

Answers

60 ml of a 0.40 m solution of h2so4 is used to neutralize 0.3 m magnesium hydroxide solution, the volume of NaOH required to neutralize the given amount of Mg(OH)2 is 160 ml.

To answer this question, we need to use the concept of stoichiometry. Stoichiometry is the calculation of the quantities of reactants and products in a chemical reaction. The balanced chemical equation for the neutralization reaction between sulfuricacid (H2SO4) and magnesium hydroxide (Mg(OH)2) is:
H2SO4 + Mg(OH)2 → MgSO4 + 2H2O
From the equation, we can see that one mole of H2SO4 reacts with one mole of Mg(OH)2. Therefore, the number of moles of Mg(OH)2 in 60 ml of 0.3 m solution is:
moles of Mg(OH)2 = concentration x volume = 0.3 x (60/1000) = 0.018 moles
Since one mole of Mg(OH)2 requires one mole of NaOH to neutralize it, we need 0.018 moles of NaOH. The concentration of the NaOH solution is not given, so we cannot directly calculate the volume of NaOH required. However, we can use the concentration and volume of the H2SO4 solution to find the number of moles of H2SO4 used in the neutralization reaction:
moles of H2SO4 = concentration x volume = 0.40 x (60/1000) = 0.024 moles
From the balanced equation, we know that one mole of H2SO4 reacts with two moles of H2O. Therefore, the number of moles of H2O produced in the reaction is:
moles of H2O = 2 x moles of H2SO4 = 0.048 moles
Since the reaction is neutralization, the same number of moles of H2O and H+ ions are produced. Therefore, the number of moles of H+ ions produced is also 0.048 moles. Each mole of NaOH can neutralize one mole of H+ ions. Therefore, the number of moles of NaOH required is:
moles of NaOH = 0.048 moles
If we assume that the concentration of the NaOH solution is also 0.3 m, then the volume of NaOH required is:
volume of NaOH = moles of NaOH / concentration = 0.048 / 0.3 = 0.16 L = 160 ml

To learn more about stoichiometry, refer:-

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What type of chemical bond links the monomers in a polymer?

Answers

alkenes such as ethene have at least one double bond in their chains and these join to make a polymer called polyethene but alkanes like ethane have only single bonds 

A balloon filled with helium rises when youlet it go. A balloon filled with carbon dioxide
sinks. Explain the difference.

Answers

A balloon filled with helium rises when you
let it go while a balloon filled with carbon dioxide
sinks. This is because the gases inside the balloons have different densities. Both gases have different densities where one is lighter than air (Helium) and the other is heavier than air (CO2).

Which of the following is true of solids?A. All solids have equal melting points.
B. Ionic solids have higher melting points than molecular solids.
C. Molecular solids have higher melting points than all other types of solids.
D. It is impossible for solids to melt; therefore solids do not have melting points.

Answers

Answer: B. Ionic solids have higher melting points than molecular solids.

This is because the rest are false, as solids are able to melt, and do have melting points. Also, not all solids have the same melting points. 

Which of the following is not an effective way to manage forests and trees?a. planned harvesting
b. planting replacements
c. clearcutting
d. soil maintenance

Answers

The correct answer for the question that is being presented above is this one: "c. clearcutting." Clearcutting, clearfelling, or clearcut logging is a forestry/logging practice in which most or all trees in an area are uniformly cut down. Clearcutting in itself is not an effective way to manage forests and trees.

Answer:

C

Explanation:

In order to get a reaction started the reactants of this type of reaction require the greatest amount of energy:a. fusion
b. fission
c. physical
d. chemical

Answers

The answer is A. Fusion is a reaction type that in order to initiate the reaction a greatest amount of energy should be inputted. This reaction involves two or more atomic nuclei coming very close to each other then colliding and eventually joining to form a new nucleus. The energy needed to do this is very large.
Other Questions
During photosynthesis, sunlight shining on a plant is absorbed. Through several chemical reactions, the plant produces sugar, a high-energy compound, from simpler substances. What energy transformation occurs during this process? A...thermal energy to chemical energy B....electromagnetic energy to chemical energy C....kinetic energy to potential energy D...potential energy to chemical energy
Which of the following is most likely to be amorphous?-glass -solid sulfur -solid calcium -gold
Why do atoms with greater numbers of protons have greater electronegativity?
A lack of sewage structures in overcrowded cities may lead to __________.a. a higher carrying capacityb. larger urban heat islandsc. poor public healthd. a greater support capacity