document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=327583>Question 327583</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The hydrogen ion concentration H+ of a substance is about 6.0 x 10^-7 moles per liter.  Find the pH.  Round to the nearest tenth.  Use the formula pH=-log[H+]\r<BR>\n" );
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document.write( "a.)6.2<BR>\n" );
document.write( "b.)-7.8<BR>\n" );
document.write( "c.)7.8<BR>\n" );
document.write( "d.)6.6 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #234644 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=234644\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> pH = -log[6 * 10^-7] = -[log(6) + log(10^-7)] = -log(6) - (-7) = 7 - log(6) </SPAN>\n" );
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