Show how you would work carry out this calculation: 1.96g of an unknown hydroxide X(OH)2 was dissolved in water, and the solution was made up to 250.00cm in a volumetric flask. In a titration, 25.00cm of this solution of
X(OH)2 required 21.20cm of 0.250 mol dm' HCl(aq) to reach the end point.
Equation: 2HCl(aq) + X(OH)2(aq) → XC12(aq) + 2H2O(1)
2021 XChalones
Identify the unknown hydroxide X(OH)2

How do forces between particles in gases compare to forces in the other states of matter? o a. the forces in gases are stronger than forces in solids but weaker than forces in liquids. o b. the forces in gases are weaker than forces in solids but stronger than forces in liquids. o c. the forces in gases are weaker than forces in solids and liquids. o d. the forces in gases are stronger than forces in solids and liquids. submit

In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy