7. Lawrencium has a half-life of 3.00 minutes. I started with a 100.0 g sample. After 45.0 minutes how

much of my sample remains Lawrencium?

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.