a mixture of sodium bicarbonate and sodium carbonate is heated strongly in a crucible for 15 minuites. the respective mass are recorded below. the equation for the decomposition of sodium bicarbonate is 2NaHCO3=Na2CO3+CO2+H2O. determine the mass % of Na2CO3 in the mixture

What happens when light is scattered?

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?