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seraphim [82]
3 years ago
7

An airplane model is an example of what type of model

Chemistry
1 answer:
Ksju [112]3 years ago
7 0
TL;DR: The make of an aircraft is the name of the designer (for example, Boeing) and the model of an aircraft (also called the type) is the designation for the general design of the aircraft (for example, 737). It looks like "basic model" is just an older term for "model".
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500.0 ml of 0.110 m naoh is added to 535 ml of 0.250 m weak acid (ka = 6.37 × 10-5. what is the ph of the resulting buffer?
sattari [20]
The main formulas are <span>pH=pKa + log(Base/Acid) and pKa = </span><span>-log(Ka)
so firstly, we must find the value of pKa,
Ka=6.37 x 10 ^-5, and then logKa= log (6.37 . 10^-5)= -9.66, so -logKa= +9.66=Ka
next let's find  </span><span>log(Base/Acid)
for that the concentration of NaOH is [NaOH] = </span><span>500.0  x 0.110  / 500+535 =0.053M, the concentration of the Acid is  [Acid] =535*0.25 / </span><span>500+535 =0.12M, so its difference is </span><span><span>[Acid]-</span>[NaOH] = 0.12-0.053=0.07
so pH=</span><span><span>pKa + log(Base/Acid)= 9.66 + log(0.053 / 0.07)= 9.66-0.36=9.29</span> </span>
so pH=9.29.





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elena55 [62]

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The data listed below are for mechanical waves. which wave has the greatest energy? amplitude = 7 cm; wavelength = 12 cm; period
docker41 [41]
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E = hc/wavelength
As we can see, there is an inverse relation between energy and the wavelength. The greater the energy, the shorter the wavelength. Among the mechanical waves listed, at the wavelength of 7 cm.
3 0
3 years ago
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SCORPION-xisa [38]
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Answer:

Here

Explanation:

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