If 92.7% of atoms are hydrogen and 6.9% of atoms are helium. what percentage of atoms are neither helium nor hydrogen?

If a rock weighing 54 n is submerged in a liquid with a density exactly twice that of water, what will be its new apparent weight reading in the liquid?

Give an example of how both short term and long term memory are involved. explain procedural, semantic ,and episodic memory and then how each is involved in this

In this lab you will use a cart and track to explore various aspects of motion. you will measure and record the time it takes the cart to travel certain distances, and then complete some calculations. in the space below, write a scientific question that you will answer by doing this experiment.