How are chemical and physical changes alike?

When 100 g of 20°C water is mixed with 50 g of 50°C water in a closed system, what is the final water temperature? A 20°C B) 30°C C) 35°C D50°C

Sediment deposited where a river flows into an ocean or lake A Karst topography B delta C flood plain D groundwater E water F runoff

An element with an electronegativity of 0.9 bonds with an element with an electronegativity of 3.1 what phrases best describes the bond between these elements?

9. How many atoms are in 1 moles of H20?

Under which conditions would the solubility of a gas be greatest? A. high pressure and high temperature B. high pressure and low temperature C. low pressure and high temperature D. low pressure and low temperature

What is the chemical formula for potassium permanganate?

Is it always possible to identify something as an element compound pure substance or mixture

Why would someone weigh less on Pluto?

HNO3 + H2O > H3O (aq) + NO3 - (aq)

What do you get when you mix lemons with gunpowder