The answer is column>soda straw>stalactite
Gold is a chemical element with symbol Au (from Latin: aurum) and atomic number 79, making it one of the higher atomic number elements that occur naturally. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal.
Pure gold is soft and is usually alloyed with other metals, such as silver, copper, platinum or palladium, to increase its strength. Gold alloys are used to make jewelry, decorative items, dental fillings and coins. The amount of gold in an alloy is measured with a unit called a karat.
Answer:
5.84 M
Explanation:
First you have to convert grams of Ca(OH)2 to moles,
since molar mass is 74.093 g/mol, we divide the amount you have by the molar mass: (86.5 g)/(74.093 g/mol)= 1.1675 moles of Ca(OH)2
Then, knowing molarity is (moles/ volume in liters), we have to convert 200 mL to liters, which is 0.200 L
Putting it together, molarity = (1.1675/0.200) M= 5.84 M
The number of atoms in Barium (Ba) is 1