Glacial striations show the direction a glacier is moving, and it suggests that the glacier flowed from a single location.
From Earth's<span> density we can estimate what elements must compose the </span>Earth; an iron core<span> just happens to estimate </span>Earth's<span> mass the best. Now from energy waves, geologists use seismometers to measure movements in </span>Earth's<span> interior (e.g. Earthquakes), These energy-waves form compressional and shear waves</span>
Percent error is an expression that is used as a tool for determining the precision of your calculations. It is calculated by the absolute value of the difference of experimental and theoretical values over the theoretical values multiplied by 100%. Hope this helps.
<span>Moles HClO4 = 0.02500 L x 0.723 M=0.0181
moles KOH = 0.0100 L x 0.273 M= 0.00273
total volume = 25.00 + 10.0 = 35.0 mL = 0.0350 L
moles H+ in excess = 0.0181 - 0.00273 =0.0154
[H+]= 0.0154 mol/ 0.0350 L=0.440 M</span>