In what way would readings from a digital thermometer be preferable to those from a liquid-based thermometer?

Chemistry

2 answers:

nirvana33 [79]3 years ago

4 0

Digital thermometer readings are easier to use when performing calculations.

erma4kov [3.2K]3 years ago

3 0

Reading a digital thermometer is more preferable because you can just easily read the measurement from a screen, a number will just show in a screen as compared to a liquid based thermometer where you still have to read the measurement by counting the markers in the thermometer.

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A 12.0-liter sample of air at 25°C and 1.00 atm pressure was collected and dried. After drying, the volume of the sample was exa

zmey [24]

<u>Answer:</u> The mass percent of water in the original air sample is 4.16 %

<u>Explanation:</u>

We are given:

Volume of moist air = 12.0 L

Volume of dry air = 11.50 L

Volume of water lost = (12.0 - 11.50) L = 0.50 L

Here, the percent by mass ratio will be equal to the percent by volume ratio as the number of moles is directly related to the volume.

To calculate the volume percentage of water in the air, we use the equation:

$\text{Volume percent of water}=\frac{\text{Volume of water}}{\text{Volume of air}}\times 100$

Putting values in above equation, we get:

$\text{Volume percent of water}=\frac{0.50L}{12.00L}\times 100\\\\\text{Volume percent of water}=4.16\%$

Hence, the mass percent of water in the original air sample is 4.16 %

8 0

3 years ago

Which experimental feature of the MALDI-MS technique allows the separation of ions formed after the adduction of tissue molecule

34kurt

Answer:

The experimental feature of the MALDI-MS technique which allows the separation of ions formed after the adduction of tissue molecules:

B) Velocity of ions depends on the ion mass-to-charge ratio.

Explanation:

The option a is not correct as distance traveled by ions doesn't depend upon the ion charge rather it depends upon time for which you leave the sample to run.
The option b is correct as velocity of ions depends on the ion mass-to-charge ratio because separation is done due to mass to charge ratio feature.
The option c is incorrect as time of travel is not inversely proportional to the ion-to-mass ratio because the ion will move across the gel until you stop the electric field.
The option d is not correct as electric field between MALDI plate and MS analyzer is though uniform but this feature doesn't allow the separation of ions.

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3 years ago

The modern periodic table is organized by?

IceJOKER [234]

B. Number of protons

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Gottfried wilhelm von leibniz invented digital mechanical calculator called

Amiraneli [1.4K]

Answer:

It was called The Step Reconer