1. A gas has a volume of 50.0 mL at a temperature of - 73°C. What volume

would the gas occupy at a temperature of - 123°C? * *Celsius

Why is 18-karat gold considered a mixture rather than a pure substance? A) It has a variable composition. B) Its color is different than pure gold. C) The gold atoms are not arranged in a repeating pattern.

Which statement provides the best example of a scientific conclusion? O A. Graphite can be used to make pencils. O B. Diamond is mined in South Africa O C. Diamond and graphite are both composed of carbon. D.

Which atomic model did Rutherford propose based on the results of his experiments with gold foil? A - An indivisible ball of matter B - Negatively charged electrons set in a positive sphere C - Mostly empty space but having a dense, positive center

Determine the mass in grams of 125 mol of neon

Determine whether each term describes the primary, secondary, or tertiary structure of proteins (or forces relating to the primary, secondary, or tertiary structure of proteins). 1. salt bridge 2. amide bond 3. disulfide bond 4. beta-pleated sheet 5.

What is the difference between a pure substance and a mixture? How are the atoms different?

Best example of an isolated system in chemistry apex

Write the net ionic equation for the chemical reaction shown. Include physical states. HClO2 (aq) + NaOH (aq) ⟶H2O (l) + NaClO2 (aq)

Which if the following is an example of a stratovolcano?

There are five elements named for famous scientists on the periodic table