A cylinder has the following dimensions: radius = 3.7 cm and height = 6.5 cm. If the mass of the cylinder is 40.67 g, calculate the density in g/cm'. (V = trh) Cylinder

Choose all the answers that apply. ionic compounds dissolve easily in water do not dissolve in water have low melting points have high melting points conduct electricity when melted

How many molecules are in 6.0 moles of methane

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