A heating curve has two flat lines, or plateaus. What does the plateau at the higher temperature represent?

1. Boiling of a liquid

2. Melting of a solid

3. Increase in temperature of a substance

4. Decrease of a substance

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Which statements are inconsistent with Rutherford's nuclear theory as it was originally stated? Why? a.

If I need 2.2 moles of CO2, and I have excess Fe2O3, how many moles of C do I need? 2Fe2O3 + C - -> Fe + 3CO2

Chromosomes are ?

Parts of the experiment that are controlled by the scientist are called A. variables B. hypotheses C. controls D. biologicals

Trevor watches as a freight train passes. He counts eight identical black railroad cars, then a red car, followed by several more black cars.

How long does a hydrogen bond last in water

If the body temperature of a person is recorded as 37°c, what is the person's body temperature in k? round your answer to the nearest whole number.

Pf3cl2 is a nonpolar molecule. based on this information, determine the f-p-f bond angle, the cl-p-cl bond angle, and the f-p-cl bond angle. enter the number of degrees of the f-p-f, cl-p-cl, and f-p-cl bond angles, separated by commas (e. g.

What is the empirical formula of a substance that contains 2.64g of C, 0.444g H and 3.52g of O