How many neutrons are probably in the nucleus of an element of atomic weight 197?

a. 43

b. 79

c. 83

d. 100

e. 118

Draw the structure of the aromatic organic product formed from the reaction of the following compound with KMnO4.

How many valence electrons are in each atom?

What is the ratio of phosphorous atoms to oxygen atoms

When ethane (C2H6) burns, it produces carbon dioxide and water: 2C2H6 (g) + 7O2 (g) →4CO2 (g) + 6H2O (l) How many liters of carbon dioxide will be produced when 89.5 L of ethane are burned? (One mole of any gas occupies 22.

Scientists classify rocks into three different types. What is the main basis for the classification system they chose? color of the rock shape of the rock how the rock formed who discovered the rock

Given that the molar mass of NaCl is 58.44 g/mol, what is the molarity of a solution that contains 87.75 g of NaCl in 500. mL of solution? moles of solute Use molarity - liters of solution

What are 3 ways to seperate metal particles and salt

Sarah heated some orange coloured crystals in a test tube. The crystals turned green and fizzed. After the fizzing stopped, the test tube was allowed to cool. A green powder was left in the tube.

In which orbital does an electron in a bromine atom experience the greatest effective nuclear charge?

Kool-Aid is made up of sugar (C6H12O6), food coloring, and water. It is an example of a (n) element heterogeneous mixture homogeneous mixture compound