3 years ago

By heating a liquid and measuring the temperature at which it boils, what is being measured?

Chemistry

1 answer:

bogdanovich [222]3 years ago

8 0

You are measuring the temperature necessary to make the liquid's vapor pressure equal to the atmospheric pressure.

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The base unit of a measured liquid called volume is?

Dafna1 [17]

The answer you need is Volume.

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3 years ago

La masa de una olla es de 300g y contiene 90% de aluminio. Hallar el número de moles de aluminio de la olla. P.A.(Al= 27)

Neko [114]

Explanation:

The mass of a pot is 300g and contains 90% aluminum. Find the number of moles of aluminum in the pot. P.A. (Al = 27)

The mass of aluminum present in the pot is:

$300 g * 90/100\\=270 g$

Hence, in the given pot 270g Al is present.

$Number of moles of Al=\frac{given mass ofAl}{its molar mass}$

The gram atomic mass of Al -27 g/mol

Given the mass of Al is 270 g

Substitute these values in the above formula:

$Number of moles of Al=\frac{given mass ofAl}{its molar mass}\\=\frac{270 g}{27 g} \\=10.0 mol$

Answer is 10.0 mol of Al is present.

6 0

3 years ago

What is the density of an object with a mass of 16 g and 3.0 ml

fomenos

Answer:

D = 5.3 g/mL

Explanation:

Density = Mass over Volume

D = m/V

Step 1: Define

D = unknown

m = 16 g

v = 3.0 mL

Step 2: Substitute and Evaluate

D = 16 g / 3.0 mL

D = 5.333333333 g/mL

Step 3: Simplify

We have 2 sig figs.

5.333333333 g/mL ≈ 5.3 g/mL

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3 years ago

Which tool is used to hold workpieces tightly so that both of your hands can be free to work on them? A. Snap-ring pliers B. Nee

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A vice, you can tighten it and then work on what is held in it without having to hold it still or in the position you want.

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