The density of magnesium is 1.7 g/cm3, and the density of iron is 7.9 g/cm3. Consider a block of iron with a mass of 819 g. What is the mass of a block of magnesium that has the same volume as the block of iron?

What trends did you notice about the temperature of the soil and the air temperature over time? Question 1 options: When air temperature increased, soil temperature increased. When air temperature decreased, soil temperature increased.

How many moles of nahco3 will be in a 3.00g sample of nahco3

Which is bigger: Water molecules or carbon dioxide : Carbon dioxide or nitrate :Water molecules or nitrate

Using paper chromatography, how can you separate a homogeneous mixture into its component chemicals?

Red A balloon has a negative charge. A glass rod has a positive charge. What will happen when the glass rod is brought near the balloon? balloon + glass + + rod O The balloon will be attracted to the rod.

What is the element K2SO4 and is it ionic, covalent or polyatomic

The elements in a star can be determined by analyzing the star's spectrum. Which statement explains why no two elements have the same spectrum? A. Each element has a unique arrangement of electrons. B.

What's the difference between cation and an anion

Where does the largest percent of water exist on Earth?

True or False: It is recommended to use sugar cubes to sweeten lemonade because they have a low surface area.