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Bas_tet [7]
3 years ago
6

Please help I don't understand. A teacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish

detergent, and milk - and pH indicator strips, which measure acidity. The teacher asks the students to put the liquids in order from most acidic to most basic.
What type of investigation could the students conduct to determine the correct order for the liquids? 1. descriptive 2.Comparitive 3. experimental
The type of liquid is 1. independent variable 2. dependant variable 3. control group
The pH is 1. independent variable 2. dependant variable 3. control group
Physics
1 answer:
hram777 [196]3 years ago
3 0

Answer:

Its Experimental

Explanation:

the others don't make sense

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Answer:

P = 2234400 Watt

Explanation:

Power generation is given as rate of work done

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So here rate of work done is given as rate of potential energy

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so we have

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Arsine, ash3 is a highly toxic compound used in the electronics industry for the production of semiconductors. its vapor pressur
Natalka [10]

Answer:  a. 17.7 KJ/Mol

b. T=210K

Explanation:

Arsine, ash3 is a highly toxic compound used in the electronics industry for the production of semiconductors. its vapor pressure is 35 torr at – 111.95°c and 253 torr at – 83.6°c. using these data calculate.

the question isnt completely originally, but we could look at the likely derivation from the questions

(a) the standard enthalpy of vaporization

using the clausius clapeyron equation

In (PT1vap / PT2vap) = delta H (vap) / R ( (1/T1) - (1/T2) )

In (35Torr/253Torr) = delta H (vap) / 8.3145 ( (1/189.55) - (1/161.2) )

Therefore, Delta H (vap) = 17.7 KJ/Mol

b. Also the boiling point

What is the normal boiling point of arsine?

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ln(760/253)=17700/8.314(1/189.55-1/T)

T=210K

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eduard

To solve this problem it is necessary to apply the concepts related to linear momentum, velocity and relative distance.

By definition we know that the relative velocity of an object with reference to the Light, is defined by

V_0 = \frac{V}{\sqrt{1-\frac{V^2}{c^2}}}

Where,

V = Speed from relative point

c = Speed of light

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P = mv

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