Daje naj na jutro zad.1Korzystając z układu okresowego pierwiastków, określ cechy atomów pierwiastków wchodzących w skład amin - podaj liczby: a)protonów, neutronów i elektronów, b)elektronów walencyjnych, c)powłok elektronowych. notatka + zad 1- na 4 + zad.2,3 -na5

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.