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lana [24]
3 years ago
9

A(n) ________ is a device that measures a change in speed

Chemistry
2 answers:
jok3333 [9.3K]3 years ago
5 0

Answer:

C Accelerometer

Explanation:

An accelerometer is an electromechanical device used to measure acceleration forces. Such forces may be static, like the continuous force of gravity or, as is the case with many mobile devices, dynamic to sense movement or vibrations. Acceleration is the measurement of the change in velocity, or speed divided by time.

Hpoe this Helps!

daser333 [38]3 years ago
5 0
The answer is C: accelerometers
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Which part of the atom is responsible for chemical bonding
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Determine the molality of a solution of benzene dissolved in toluene (methylbenzene) for which the mole fraction of benzene is 0
kogti [31]

Answer:

2.32 m

Explanation:

So, according to definition of mole fraction:

Mole\ fraction\ of\ benzene=\frac {n_{benzene}}{n_{benzene}+n_{toluene}}

Mole fraction = 0.176

Applying values as:

0.176=\frac {n_{benzene}}{n_{benzene}+n_{toluene}}

0.176\times ({n_{benzene}+n_{toluene}})={n_{benzene}}

So,

0.176\times n_{toluene}}=0.824\times {n_{benzene}}

{n_{benzene}}=\frac {0.176}{0.824}\times n_{toluene}}

{n_{benzene}}=0.2136\times n_{toluene}}

Also, Molar mass of toluene = 92.14 g/mol

Thus,

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Mass=92.14\times n_{toluene}}\ g

Also, 1 g = 0.001 kg

So,

Mass\ of\ toluene=0.09214\times n_{toluene}}\ kg

Molality is defined as the moles of the solute present in 1 kg of the solvent.

It is represented by 'm'.

Thus,  

Molality\ (m)=\frac {0.2136\times n_{toluene}}{0.09214\times n_{toluene}}

<u>Molality of benzene = 2.32 m</u>

3 0
3 years ago
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