What's the oxidation number of k2so4

What does hydrogen peroxide do to open wounds?

Determine the empirical formula of kevlar, used in making bullet proof vests, is 70.6% c, 4.2% h, 11.8% n and 13.4% o.

Explain how chemists can state with certainty that no one will discover an element between sulfur and chlorine?

A student constructs an electrochemical cell. A diagram of the operating cell and the unbalanced ionic equation representing the reaction occurring in the cell are shown below.

What is a characteristic of mixtures

The reaction 2CH4 (g) ⇌C2H2 (g) + 3H2 (g) has an equilibrium constant of K = 0.154. If 6.70 mol of CH4, 4.05 mol of C2H2, and 10.05 mol of H2 are added to a reaction vessel with a volume of 5.20 L, what net reaction will occur?

What is harder to pull apart a sodium ion from a chloride ion or a potassium ion from a chloride ion?

Under what conditions is the ideal-gas assumption suitable for real gases?

How is the energy released by an earthquake related to its moment magnitude?

Suppose you have an Avogadro's number of nitrogen atoms. How many grams does this represent? Enter your answer to one decimal place.