What element is found in liver and red blood cells and is needed to prevent anemia

Which of the following is a characteristic of durable scientific knowledge? A - It remains unchanged over time. B - It is rarely subjected to examination. C - Several scientists' investigations support it.

An (blank) is an abbreviation for the name of an element and usualy has eighter one or two letters

Declare the volume of the yeast alcohol as a fraction of the total amount of ethanol liquor liquefied alcohol in 30cm of water per 100cm

Why were Opportunity and Spirit sent to Mars' surface?

Water is called the "universal solvent." Which statement best explains this description with respect to ionic compounds?

Part II. Formulas From Names Write the chemical formula of the covalent compounds below. 11. Carbon dioxide CO2

Spell out the full name of the compound Cl2O7

True or False. When covalent bonds are formed between atoms having different electronegativities, the electrons tend to spend less time at the atom with the greater electronegativity. Such chemical bonds are called polar covalent bonds.

How many protons are in an element

Which of the following is an example of oxidation? A. Charcoal is placed on a grill and lighting fluid poured over it. B. A car gets rusty over the course of a few years. C.