Write down the chemical formulas of the following: i) Magnesium sulphate Hepta Hydrated. Epsom salt ii) Sodium carbonate DECA hydrated. Washing soda

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

No copying 15 pts how does a free-body diagram tell you about the net force on an object?