A piece of lead loses 78.0 J of heat and experiences a decrease in temperature of 9.0C. What is the mass of the piece of lead? 66.7 g
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Which element is the least metallic between cadmium, silver, zinc, or iron?

Why do lunar and solar eclipse not happen every month

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car