What would happenen if we were to have a solar eclipse and a lunar eclipse

To prevent tank rupture during deep-space travel, an engineering team is studying the effect of temperature on gases confined to small volumes. What is the pressure of 2.60 mol of gas D measured at 251 ∘C in a 1.

How many nitrogen and hydrogen atoms are in these two molecules of ammonia? 2NH3 A. 2 nitrogen and 5 hydrogen B. 2 nitrogen and 6 hydrogen C. 6 nitrogen and 6 hydrogen D. 2 nitrogen and 3 hydrogen

Geologists use radioactive dating to ... A. determine the relative age of rock layers B. tell the difference between molds and casts. C. tell where one soil horizon ends and the next one begins. D. determine the absolute age of rocks.

How have science his learned about the earths interior

How much energy must be supplied to break a single 21ne nucleus into separated protons and neutrons if the nucleus has a mass of 20.98846 amu?

What scientists do that is the basis for there investigation

A reaction is zero order in a reactant. Which best describes what happens to the rate if the concentration of that reactant is cut in half? a: The rate changes to twice the original rate. b: The rate changes to one-half the original rate.

How many moles of hydrogen atoms are there in 1 mole of C6H12O6 molecules?

Which condition will release more energy when an electron changes levels? From n = 4 to n = 3 from n = 3 to n = 2 from n = 2 to n = 1

What happens when an electron moves from a higher energy level to a lower one