How to balance chemical formulas

Which of these is an example of a physical change! A baking a cake B toasting bread C grinding pepper D lighting up a grill

Convert 685K to Fahrenheit

Which organic compound is most soluble in water? A) ethyne B) benzene C) butane D) ethanol

How many atoms of Hydrogen in the reactants of the following equation? 3Ba (OH) 2 + 2Na3PO4 - -> Ba3 (PO4) 2 + 6NaOH 6 5 4 3 Remember that the coefficient at the front of the compound must be multiplied by any subscript.

Why would you use a solution, such as a cabbage pH indicator, to measure the pH of household items? to see if food went bad to test the safety of water to make sure conditions are safe to use up old cabbage

Which geologic time span covers the majority of Earth's history?

as the flames heat the gases in the balloon the volume of the gases increases at constant pressure the volume of all gases increases with increasing temperatures is this statement a scientific theory or law explain

At 1.0 atm, terell heats a sample of soild caffeine at 178c the soild converts directly into gas. what is the name of this phase change?

Practice Problem #1: __TiO2 + __Cl2 + __C __TiCl4 + __CO2 + __CO How many mol chlorine will react with 4.55 mol carbon? What mass titanium (IV) oxide will react with 4.

In which chemical reaction will the heat content of the reactants be more than that of the products?