4 gram of sodium carbonate are made to react with 10 g of hydrochloric acid. 2.5 g of carbon dioxide and 11.5 g of
sodium chloride is formed. Show that these data confirm
the law of conservation of mass.​

What is the standard unit of measure for acceleration?

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.