In two or more complete sentences, describe two differences between electromagnetic waves and mechanical waves.

What does the questions "how much?" and "how many?" have in common?

What mass of lithium chloride, licl must be dissolved to make a 0.194M solution that has volume of 1.00 l

How do cells produce carbohydrates and lipids?

Which of the following compounds would be named with a name that ends in - ene? A) CH3 - C = C - CH2 - CH2 - CH3 B) CH3 - CH2 - CH2 - CH3 C) CH = C - CH2 - CH2 - CH3 D) CH3 - CH2 - CH2 - CH = CH2

Why is mass conserved in a chemical change? The energy used in the chemical reaction burns up the extra matter. The compounds are still exactly the same, they just look different.

A nurse measures the volume of a drop of medicine. The volume of 1 drop of medicine is 1.66mL. What is the volume in deciliters of 1000 drops of medicine? Write your answer as a decimal.

10. Copper (i) bromide reacts with magnesium metal: 2 CuBr + Mg → 2 Cu + MgBrz If 0.253 moles of magnesium react in this way, a. How many grams of CuBr are consumed?

Objects 1 and 2 float as shown in the beaker below. Object 1 barely floats while 2 floats above surface. The density of the liquid in the beaker is 3.2 g/cc.

A 3.75 g sample of limestone, CaCO3, contains 1.80 g of oxygen and 0.450 g of carbon. What mass of calcium is present in the sample? a. 1.00 g b. 1.25 g c. 1.50 g d. 1.75 g e. 2.00 g

Some instant cold packs contain ammonium nitrate and a separate pouch of water. When the pack is activated by squeezing to break the water pouch, the ammonium nitrate dissolves in water and the pack gets cold.