Chemistry, 30.06.2019 10:30 tonimgreen17p6vqjq

What’s is the mass in grams of 5.90 mol c8h18?

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Answer from: chapb75

Mass = 5.90 x 114 = 672.6g.

This can be rounded to 673g

C = 12 grams x 8 = 96 grams

H = 1 gram x 18 = 18 grams

Total = 96 + 18 = 114 grams in one mole.

If you have 5.9 moles, multiply this by the weight of one mole (114 grams) = 672.6 rounded to 673 grams in 5.9 moles.

Answer from: xtrabad2ov5d6h

The mass of 5.90 moles of $\rm C_8H_1_8$ has been 672.6 grams.

To calculate the mass of 5.90 moles of the $\rm C_8H_1_8$ , the molecular mass of the molecule has to be calculated. The molecular mass has been the sum of the mass of the atoms present in the molecule.

A molecule of $\rm C_8H_1_8$ has been consisted of 8 atoms of Carbon, and 18 atoms of hydrogen.

The molecular weight of $\rm C_8H_1_8$ = 8 $\times$ molecular mass of Carbon + 18 $\times$ molecular mass of Hydrogen

The molecular weight of $\rm C_8H_1_8$ = (8 $\times$ 12) + (18 $\times$ 1)

The molecular weight of $\rm C_8H_1_8$ = 114 g/mole.

mass = mole $\times$ molecular weight

Mass of 5.90 moles of $\rm C_8H_1_8$ = 5.90 $\times$ 114 grams

Mass of 5.90 moles of $\rm C_8H_1_8$ = 672.6 grams.

The mass of 5.90 moles of $\rm C_8H_1_8$ has been 672.6 grams.

For more information about the mass of a molecule, refer to the link:

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Answer from: Quest

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

Write 15 uses of a mercury barometer along with its characterestics

Answer from: Quest

All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.

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