When oxygen and aluminum form an ionic compound, what is the formula? O2Al3 O3Al2 A3O2 Al2O3

Which element is magnetic? calcium chromium carbon cobalt

What are the differences and similarities between ionic compounds and covalent compounds?

A student is asked to convert measurements from liters to milliliters and from milliliters to liters. His answers are shown in bold in the choices shown below. On which choice did he make a mistake?

Billions of pounds of urea are produced annually for use as a fertilizer. Balance the skeletal equation for the synthesis of urea. Express your answer as a chemical equation. Identify all of the phases in your answer.

There are two naturally occurring isotopes of chlorine. 35 Cl has a mass of 34.9689 u. 37 Cl has a mass of 36.9659 u. Determine the abundance of each isotope.

Only producers perform ... A) photosynthesis B) respiration C) both A & B D) neither A or B

A steel cylinder containing 25 kg of CCl2F2 in the form of liquid and vapor is set outdoors on a warm day 25 degrees celsius. What is the approximate pressure of the vapor in the cylinder?

Which of these observations would be classified as a physical property A:lemon juice cleans a penny B: A candle burns brightly C: baking soda in vinegar forms bubbles D: a cube of gold is hammered into a thin sheet

Target tissues of hormones are always near the glands that release the hormones. true or false

What four things affect the tides