Which of the following is evidence for a physical change? A) burning B) fizzing C) evaporating D) rusting

How much 0.02 m kmno4 solution should be needed if the solutions tested have a composition of 3% h2o2 by mass?

Compare the advantages and disadvantages of using nuclear energy.

In which temperature zone does the sun rays strike at a Lower angle making this zones prime it's colder than other temperature zones?

In basic solution, se2 - and so32 - ions react spontaneously and e o cell = 0.35 v. (a) write the balanced half-reactions for this process. include the states for each reactant and product. (b) if e o sulfite is - 0.57 v, calculate e o selenium.

5. What volume would you need to dilute 0.2 L of a 15 M solution to obtain a 3 M solution?

The dissolution of barium hydroxide in water is an exothermic process. Which of the following statements is correct? A) The enthalpy of solid barium hydroxide plus pure water is less than that of the solution, at the same temperature.

What's the Compound for CO?

How to measure a bag of flour

If the pH of a wine is too high, say, 4.0 or above, the wine becomes unstable and has a flat taste. (a) A certain California red wine has a pH of 3.5, and a certain Italian white wine has a pH of 2.9.

Sodium hydroxide reacts with carbon dioxide as follows: which is the limiting reactant when 1.85 mol naoh and 1.