Neutrons have. a. negative b. positive c. no charge d. nucleus

It is generally considered that dinosaurs live in warm climates, yet fossils remains are found in antartica. How can that be explained

Over In order for an object to be buoyant, there must be a difference in the area of the object. A. force of gravity B. density C. fluid pressure D. mass

How many miles are in 1.50^22 atoms of silver?

Felicity and Dawson are conducting an investigation to determine the empirical formula of iron oxide. They start with an 85.65g piece of iron metal and burn it in the air. The mass of the iron oxide produced is 118.37.

A 13.8 g sample of X reacts with a sample of Y to form 68.3 g of XY. What is the mass of Y that reacted

Why are two nonpolar substances able to dissolve in each other?

Which of the following illustrates the conservation of matter? A. SnO2 + H2 - -> Sn + 2 H2O B. 2 C + O2 - -> CO2 C. KOH + HBr - -> KBr + H2O D. 6 Cs + N2 - -> 6 Cs3N I want to say B?

AIDS is caused by?

In 1928, 47.5 g of a new element was isolated from 660 kg of the ore molybdenite. the percent by mass of this element in the ore was:

What does the direction and length of velocity vector indicate