How many grams of Ba are needed to react completely with 1.30 L of a 6.00 M HBr solution? Ba + 2HBr BaBr2 + H2

How do hormones affect the body

What are the properties of elements related to? A) the number of electrons that fill the outer shell B) an element's symbol C) the total number of electrons D) the average atomic mass

What is the ph value of water and salt?

A gas is confined in a steel tank with a volume og 6.982L at 20.20c the gas exerts a pressure of 8.532 atm. after heating the tank the pressure of gas increases to 10.406atm. what is the temperature of the heated gas convert celsius temp to kelvins

Which of these substances is not an element? a. water b. hydrogen c. aluminum d. iron

How does adding salt affect the surface tension of water? if it increases surface tension, will it always increase it?

Which usually has a higher temperature? A city or the areas around the city?

Toluene and pyridine form ideal solutions. Consider a solution of toluene and pyridine prepared at 25°C. Assuming that the mole fractions of toluene and pyridine in the vapor phase are equal, calculate the composition of the solution.

Formula for water what does the lack of a subscript after those O indicate

Why do the chemical properties cycle through each period? Every eighth element starting with hydrogen restarts the transition from metal to inert gas. Elements with atomic numbers which are multiples of eight start a new period.