Превращение по схемам CuO + H2O = Ca(OH)2
Ca(OH)2 + CO2 = CaC03 + H20
CaCO3 + 2HCl = CaCl2 + H2O + CO2

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.

Calculate the temperature rise when 0.2g of propane is used to heat 400cm cubed of water.

Compare and contrast an assemblage and a pollen fingerprint by defying both and giving examples of each from the chapter.