Which of the following are physical rather than chemical properties of hydrogen gas(h2)? check all that applya. h2 gas does not conduct electricity. b. liquefied h2 boils at a very low temperature (-253.7oc)c. it reacts vigorously with oxygen (o2) to form water. d. at room temperature, its density is less than that of any other gas

a, b, d

Explanation:Physical property are measurable (or perceived) property of something observable without having to change the composition or identity of that thing.

Examples of physical properties in the context included in the question are the following: • Temperature • Solubility • Resistivity • Conductivity • Density

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?