Star A has a magnitude of 2. Star B has a magnitude of 5. What is the brightness ratio? A. 6.3 : 1 B. 15.8 : 1 C. 5 : 2 D. 2 : 5

Beryllium has one more electron than lithium. Can this additional electron fit in the 2s subshell?

A skateboarder reaches a speed of 130 km/h while attempting to set a world record. At this speed, how far would the skateboarder go in 30 minutes? A. 45 km B. 65 km C. 75 km D. 95 km

When did western civilization first embrace the idea that humans needed to be one with nature? A. early modern period B. roman period C. romantic period D. colonial period

A sample of gold has a mass of 67.2 g and a volume of 3.5 cm3. the density of gold is

Which definition of heat is most scientifically accurate? the temperature of the thermal energy in an object the movement of thermal energy from one place to another a measure of the thermal energy in matter how hot or cold something is

Glucose is not made from which of the following

Rank the temperatures from the highest to the lowest. 133F 351K 25C 273K 146C 58F 95F

Calculate the density of sulfuric acid if 35.4 mL of the acid weighs 65.14 g.

Where the single machos?

A reaction will be spontaneous only at low temperatures if both ΔH and ΔS are negative. For a reaction in which ΔH = - 320.1 kJ/mol and ΔS = - 86.00 J/K · mol. Determine the temperature (in °C) below which the reaction is spontaneous.