How many moles of each element are in one mole of be(oh)2? a. 1 mole of beryllium, 1 mole of oxygen, 2 moles of hydrogen b. 1 mole of beryllium, 2 moles of oxygen, 2 moles of hydrogen c. 2 moles of beryllium, 2 moles of oxygen, 2 moles of hydrogen d. 2 moles of beryllium, 1 mole of oxygen, 1 moles of hydrogen

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Ineed to find the answer of this question because i dont understand it

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this