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zmey [24]
3 years ago
5

Why did the U.S. and Allied forces invade Afghanistan after 9/11?

Chemistry
2 answers:
n200080 [17]3 years ago
4 0
The answer is. B. They knew the Ba'ath Party was responsible for the attacks. Hope it help
Karo-lina-s [1.5K]3 years ago
3 0

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

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Why is it dangerous to react sodium and potassium with dulute sulphuric acid?​
spin [16.1K]

Answer:

Because sodium and potassium are very reactive metals so they react explosively with HCL and H2SO4 evolving a large amount of heat.

Explanation:

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3 years ago
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The enthalpy of neutralization for the reaction of a strong acid with a strong base is −56 kJ/mol of water produced. How much en
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What are the products in a sodium and water reaction?
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3 years ago
Lead−206 is the end product of 238u decay. one 206pb atom has a mass of 205.974440 amu. (a) calculate the binding energy per nuc
Dovator [93]
The atomic number for Pb is 82
∴ Pb has 82 protons and 206-82 = 14 protons
The actual mass of Pb nuclei is
=(82 × mass of the proton) + (124 × mass of neutron)
=(82× 1.00728) + (124 × 1.008664) amu
= 207.6713 amu
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m = 207.6713 - 205.9744 = 1.6969 amu
=1.6969 × 1.66054 × 10⁻²⁷kg
=2.818 × 10⁻²⁷kg
The binding energy is E = mc²
C is the speed of light in vacuum = 2.9979 × 10⁸m/s
∴ E = 2.532 × 10×⁻¹⁰ J/mol
= 2.532 × 10⁻¹⁰ × 6.023 × 10²³ J/mol 
= 1.53811 × 10¹⁴ J/mol

8 0
3 years ago
What’s the answer to the top one? i’m not sure if i’m right tbh.
liberstina [14]
The correct answer to the top one is d
6 0
3 years ago
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