Consider the following properties:
i) objects made of silver become tarnished.
ii) the boiling point of ethanol is 78◦c.
iii) the red color of rubies is due to the
presence of chromium ions.
which is/are chemical?

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.