Describe what you observe when you light a Bunsen burner.

An atom that has a charge due to loosing or gaining electrons is called?

What is the most likely formula for an oxide formed between group a 1 atom x and oxygen

A sky rocket is launched with a force of 10 N and accelerates at 20 m/s squared what is the mass of this skyrocket

Calculate the number of moles of C2H6 (nC2H6) in 1.80*1023 molecules of C2H6.

Which statement is true about an empirical formula? -It is the true ratio of atoms in a formula unit. -It is the simplest ratio of atoms in a formula unit. -It represents the true molecular mass of a chemical formula.

If you have a 10% sugar solution and a 35% sugar solution, how does the 10% solution compare to the 35% solution?

Sodium potassium, chloride and phosphorous are all nutrients involved in hydration and neuromuscular function. List each nutrient and identify either its RDA or AI. Why do some have an AI while others have an RDA

Laura wonders why an object can ever accelerate if every force it exerts causes a reaction force. Which explanation best answers her question?

Phosphorus trichloride, PCl₃ is a liquid at room temperature. Explain this observation in terms of the particles, structure and bonding of PCl₃.

4. Thorium-234 has a half-life of 24.1 days. What percentage of the original thorium-234 in a sample will remain after 144.6 days?