The hydrocarbon C2H4 is a member of the_series.

What is the number of protons in the nucleus of an element called?

2H2+O2---> 2H2O can be classified as what type of reaction? A. Both synthesis and combustion B. Only synthesis C. Only combustion D. Something other than synthesis or combustion

A basic observation of a star is how bright it appears. This brightness is known as the star's A. luminosity. B. absent magnitude. C. apparent magnitude. D. absolute magnitude.

What happens when a star comes to an end? A. It can become a Sun. B. It can become a black hole. C. It can become a whirlpool. D. It can just disappear.

What is the difference between heat and temperature?

Matt plays badminton. He serves the birdie with a velocity of 4.25 m/s [right] covering a displacement of 5.2 m [forward]. How much time does this birdie's trip take? show your work below

A Roller Derby Exhibition recently came to town. They packed the gym for two consecutive weekend nights at South's field house.

A train is 240 meters long and travels 20 m/s. How long does it take to cross a 360-meter long bridge? S

When polarizing an object, what happens to the charges in the object? A. They swirl about like bees in a hive. B. They separate, with positive charges on one side and negative charges on the other. C.

Hailey is preparing a debate on the benefits of using synthetic polymers over natural polymers, and she wants to create a list to get started. Which should she include in her list? Check all that apply. Synthetic polymers are biodegradable.