What is the molar mass of Mg(ClO4)2?

223.21 g /mol

Explanation:

To find the molar mass (g/mol) of a substance, you have to add the amu's of all the elements together. First you have to determine how of element there are:

Mg=1, Cl=2, O=8.     Now you multiply the amu of each element by the number of elements in the compound. Then add them together. The amu of an element and its molar mass are the same.

1(24.31 g/mol) + 2(35.45 g/mol) + 8(16.00 g/mol) = 223.31 g/mol

the child will have heterozygous dominant chromosomes as characters of his father are dominant over the characters of his mother.

the child is heterozygous

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.