Jade wants to measure the thickness of a copper wire. she wound the copper wire 30 times around a pencil and used a ruler to measure the length of the wound wire as shown in the figure.

which of these is the most accurate thickness of the copper wire?
0.001 cm
0.005 cm
0.01 cm
0.05 cm

Find the mass in grams of hydrogen gas produced when 14.0 moles of hcl is added to an excess amount of magnesium.

In an energy pyramid, which level has the most available energy?

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what