Describe the limitations of using models to represent atoms

Calculate the enthalpy change when 2 l of liquid nh3 is burned in air to give n2 (g) and h2o (g). express your answer using two significant figures.

In a mixture of 2 gases (co2 and br2), 40.0 percent of the total gas pressure is exerted by the carbon dioxide. If the total pressure is 4.60 atm, what pressure does the bromine gas exert?

Write a balanced chemical equation to show the reaction of naoh with the monoprotic acid hcl.

Which scientist invented a model of the atom that most closely resembles the modern electron cloud model? j. j. Thomson Niels Bohr Ernest Rutherford John Dlaton

Which are risks of using nuclear power plants to generate electricity? Check all that apply. Nuclear power plants produce highly toxic waste that breaks down very slowly. Nuclear power plants require undersea drilling that damages marine ecosystems.

A friend says that temperature increases altitude increases becauses you're moving towards the sun. Is this true? Explain.

Zinc put in concertrated sodium hydroxide

how do geologists use seismic waves to locate an earthquakes epicenter

Which formula id correctly paired with its name? A. MgSO↓ = magnesium chlorine B. FeO = iron (|||) oxide C. K↓2O = Phosphorus dioxide D. CuCI↓2 = copper (||) chloride

Suppose you find a rock that contains some potassium-40 (half-life of 1.3 billion years). you measure the amount and determine that there are 5 grams of potassium-40 in the rock.