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masha68 [24]
2 years ago
10

What do scientists call the type of rocket in which part of the rocket is dropped off after fuel has been used?

Chemistry
1 answer:
Blababa [14]2 years ago
3 0

Answer:

Multistage rockets

Explanation:

Multistage is a launch vehicle that uses two or more rocket stages, each of which contains its own engines and propellant.

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(a) Given that Ka for acetic acid is 1.8 X 10^-5 and that for hypochlorous acid is 3.0 X 10^-8, which is the stronger acid? (b)
Gala2k [10]

Answer:

HOAc is stronger acid than HClO

ClO⁻ is stronger conjugate base than OAc⁻

Kb(OAc⁻) = 5.5 x 10⁻¹⁰

Kb(ClO⁻) = 3.3 x 10⁻⁷

Explanation:

Assume 0.10M HOAc => H⁺ + OAc⁻  with Ka = 1.8 x 10⁻⁵

=> [H⁺] = √Ka·[Acid] =√(1.8 x 10⁻⁵)(0.10) M = 1.3 x 10⁻³M H⁺

Assume 0.10M HClO => H⁺ + ClO⁻ with Ka = 3 x 10⁻⁸

=> [H⁺] = √(3 x 10⁻⁸)(0.10)M = 5.47 x 10⁻⁵M H⁺

HOAc delivers more H⁺ than HClO and is more acidic.

Kb = Kw/Ka, Kw = 1 x 10⁻¹⁴

Kb(OAc⁻) = 5.5 x 10⁻¹⁰

Kb(ClO⁻) = 3.3 x 10⁻⁷

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3 years ago
In the name, iron(III) oxide, the (III) represents
miss Akunina [59]

Answer:

A

Explanation:

the number o iron atoms

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How to measure with SI UNIT
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The SI base units and their physical quantities are the metre for measurement of length, the kilogram for mass, the second for time, the ampere for electric current, the kelvin for temperature, the candela for luminous intensity, and the mole for amount of substance.
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Both carbon dioxide and water are molecules containing three atoms. Explain, in terms of structure, why water is polar, but carb
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1500 cm^3 ; 1 mL equals 1 cm^3
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