Which of the following are the characteristics of a warm front with the type of front? Choose all that apply. Question 2 options:

A mass of cooler, denser air replaces a mass of warmer air in this front.

Colder, drier air presses forward in this front; warmer or more humid air draws back.

The weather of this front may bring drizzly rain.

A mass of warm air replaces a mass of cold air in this type of front.

Warm or more humid air presses forward in this front; cold or drier air draws back.

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage

Compare and contrast physical changes with chemical changes.

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?