document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1140121>Question 1140121</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the formula pH=-log[H^+]\r<BR>\n" );
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document.write( "a. The hydrogen ion concentration of a hair rinse is about 2.1 * 10^-4 moles per liter. Find the pH. Round to the nearest tenth. \r<BR>\n" );
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document.write( "b. Find the hydrogen ion concentration of a solution whose pH is 3.6  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #760600 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39630)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=760600\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If molarity of Hydronium concentration is x,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=pH=-log%28%28x%29%29 ALIGN=MIDDLE  ALT=\"pH=-log%28%28x%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=log%28%28x%29%29=-pH ALIGN=MIDDLE  ALT=\"log%28%28x%29%29=-pH\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x=10%5E%28-pH%29%29 ALIGN=MIDDLE  ALT=\"highlight%28x=10%5E%28-pH%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >------------Use this with a calculator!\r<BR>\n" );
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document.write( "The hydrogen ion concentration of a hair rinse is about 2.1 * 10^-4 moles per liter. Find the pH. <BR>\n" );
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document.write( "You want  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-log%28%282.1%2A10%5E%28-4%29%29%29 ALIGN=MIDDLE  ALT=\"-log%28%282.1%2A10%5E%28-4%29%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. </SPAN>\n" );
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