What is the formula of the compound in which the atom combining ratios are: magnesium : bromine = 1:2
Enter elements in the order given:

Please help me with this

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Define dew point. i am writing this part to be able to ask the question

What is the value of the standard enthalpy of formation of an element in its most stable form?