Write down the name and molecular formula of a compound which gives hydrogen ions and sulphate ions in solution state. In which color is the methyl orange changed after treating it with this compound? Why?Write the name of the salt when the same compound is treated with sodium hydroxide. write down the chemical equation?? Answer it as fast as you can

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)