A hydrocarbon has a percentage composition by mass of 87.80%carbon, the rest is hydrogen. If its relative molecular mass is 82,determine the molecular formula of the hydrocarbon​

What phase of matter has particles that are held together but can flow past each other and takes the shape of a container, filling it from the bottom up?

Identify two types of chemical bonding in the source of dietary potassium

Using this reversible reaction, answer the questions below: n2o4 2no2 (colorless) (reddish-brown) -as the temperature increased, what happened to the n2o4 concentration? -was the formation of reactants or products favored by the addition of heat? -which reaction is exothermic? right to left or left to right? -if the change of enthalpy of this reaction when proceeding left to right is 14 kcal, which chemical equation is correct? n2o4 2no2 + 14 kcal n2o4 2no2, hr = +14 kcal n2o4 + 14 kcal 2no2 n2o4 2no2, hr = -14 kcal