For example, pH 10 is ten times more alkaline than pH 9 and 100 times (10 times 10) more alkaline than pH 8. Pure water is neutral. But when chemicals are mixed with water, the mixture can become either acidic or basic. Examples of acidic substances are vinegar and lemon juice.
For Office 2013, the lineup of packages available through retail channels remains the same, but Microsoft is bumping prices significantly. Office Home & Student, which includes Word, Excel, PowerPoint, and OneNote, will cost $140, up 17% from the current $120. Office Home & Business, which includes the above apps plus Outlook, will go for $220, up 10% from the current price of $200.
PowerPivot is freely available to anyone with a copy of Excel 2010, but Microsoft took PowerPivot out of almost all versions of Excel 2013 -- apparently as an incentive to force PowerPivot users to rent Office 360 E3 at $240 per year. Even Office 2013 Professional, with a $399 list price, doesn't include PowerPivot.