The atomic number of an element mass number & electrons, The atomic number ...

The atomic number of an element is 35 and mass number is 81. The number of electrons in the outer most shell is: (1) 7       (2) 6         (3) 5       (4) 3 Ans: 7

Calculate the combustion energies of 1 mol of propane, Calculate the combus...

Calculate the combustion energies for the burning of 1 mol of propane and butane. It can be supposed that all reactants and products are obtained under standard conditions.

Reactants in excess, Q. Use of Reactants in Excess? Ans. Consider ...

Q. Use of Reactants in Excess? Ans. Consider a recipe for pancakes that calls for 2 cups of pancake batter mix and 1 cup of water. The result of this recipe is 14 pancakes

Periodic table, why f block is out from periodic table

why f block is out from periodic table

Functions of nucleic acid - replication, Replication: The genetic infor...

Replication: The genetic information for the cell is comprised in the sequence of the bases A, T, G and C that are adenine, thymine, guanine and cytosine correspondingly in the

What is the chemical formulae of fools gold?, The mineral pyrite, or iron p...

The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS 2 . This mineral''s metallic luster and pale brass-yellow hue have earned it the nickname fool''s gold b

Dillution and dissolution, what are the precedure of dillution and dissolut...

what are the precedure of dillution and dissolution

Find the kilograms of salt in the tank, A tank containing 100 kg of a 60% b...

A tank containing 100 kg of a 60% brine (60% salt) is filled with a 10% salt solution at the rate of 10 kg/min and 78°F. Solution is removed from the tank at the rate of 15 kg/min.

Confirming compound separation by tlc., Every  precipitate will be collecte...

Every  precipitate will be collected using a Hirsch funnel. Make definite that the plastic frit disc is firmly snapped in place in your focus.  Replacement frit discs are available

Ionic bond,