Calculate the density of a material that has a mass of 52.457g and a volume of 13.5cm

A hydrogen electron jumps from energy level n = 2 to n = 4 after energy absorption. What will the spectral lines emitted by this electron look like under a spectroscope? a. a dark line spectrum b. white light c. a continuous spectrum d.

A hypothesis can be described as Question 1 options: a law. a wild guess. a theory. a plausible explanation.

What would you be most likely to measure by immsering and object in water and seeing how much the water level rises

true or false? A canopy of water once shielded man from the sun's radiation.

20. The following is a Limiting Reactant problem: Magnesium nitride is formed in the reaction of magnesium metal with nitrogen gas in this reaction: 3 Mg (s) + N2 (g) - -> Mg3N2 (s) How many grams of product are formed from 2.0 mol of N2 (g) and 8.

The total pressure inside a 1.62 cylinder kept at 35°C is 1.15 atm. If the volume of the cylinder drops to 0.74 L and the temperature remains the same, what is the new pressure inside the cylinder?

What is difference between tempering and aging?

Convert 1.21 kg to grams

What are the 3 factors that can affect the strain of rock?

16. Why can grinding a solid into a fine powder increase the rate of reaction?