Mg + 2HCl = H₂ + MgCl₂
n(HCl)=c(HCl)v(HCl)
n(H₂)=n(HCl)/2=c(HCl)v(HCl)/2
n(H₂)=3.0mol/L*0.2500L/2=0.375 mol≈0.38 mol
Answer:
a solar eclipse is when the moon moves between the earth and the sun, so the moon casts a shadow on the earth
Explanation:
False, compounds can be formed from chemical reactions, mixtures can not
Answer:
No because protons determine what type of atom it is. It is protons and neutrons that account for atomic mass
Earth's shape & the tilt of its axis causes the Sun's rays to strike different parts of Earth's surface. I hope this helped :)