compoundchem: Today’s graphic looks at how to make ‘golden...

compoundchem:

Today’s graphic looks at how to make ‘golden rain’ with chemistry! http://wp.me/p4aPLT-17k

The acid–base indicator methyl red has a \(K_a\) of \(1 \times...

The acid–base indicator methyl red has a \(K_a\) of \(1 \times 10^{-5}\). Its acidic form is red while its alkaline form is yellow. If methyl red is added to a colorless solution with a pH = 7, what will the color of the solution be?

0.250 g of an element, M, reacts with excess fluorine to produce...

0.250 g of an element, M, reacts with excess fluorine to produce 0.547 g of the hexafluoride, \(MF_6\). What is the element?

An unknown gas effuses through a small hole one half as fast as...

An unknown gas effuses through a small hole one half as fast as \(CH_4\), under the same conditions. What is the molar mass of the unknown gas?

For a process that is both endothermic and spontaneous, which of...

For a process that is both endothermic and spontaneous, which of the following relations is correct?