Is a humidifier putting moisture into the air a physical or chemical change and why?

Why can two igneous rocks that have the same minerals but different names?

Suppose you increase your walking speed from 4 m/s to 13 m/s in a period of 1 s. What is your acceleration? m/s2

Sixty miles/hour is how many ft/sec

Why does an oil-and-vinegar salad dressing have two separate layers?

Qual e o maior orgao do corpo humano

How many moles are in. 12 grams of gold.

When lithium reacts with bromine to form the compound LiBr, each lithium atom: (1) gains one electron and becomes a negativelycharged ion (2) gains three electrons and becomes a negativelycharged ion (3) loses one electron and becomes a

Based on what you know about matter, explain why the food coloring mixes at different rates

What does the variable A stand for in the Arrhenius equation? A. activation energy B. frequency factor C. rate constant D. reactant concentration

Name 3 sets of elements that have been added to the periodic table since mendeleev's time