Explain why the word atom was an appropriate term for democritus's idea.

How much heat, in calories, is given off when 1.25 grams of silver is cooled from 100.0°C to 80.0°C? (The specific heat of silver is 0.057 cal/g°C) 1.43 cal 0.0713 cal 5.70 cal 7.13 cal

Which of the following is true for balancing equations? The number of products should be equal to the number of reactants. The properties of products should be the same as the properties of reactants.

How can liquids be separated by density? a. the liquids are absorbed by paper b. the liquids are collected as they evaporate c. the liquids are allowed to separate into layers d. the liquids turn into separate vapors

What did the Curies demonstrate by studying pitchblende? Uranium is not the only radioactive element. All elements are potentially radioactive. Radium can cause anemia, bone and tissue damage, and death.

If [H+] = 1.7 x 10-3 M, what is the pH of the solution?

What is the oxidizing agent in the reaction fe + agno3 fe (no3) 3 + ag?

If the pituitary gland is inhibited, then what stops

Which mass measurement contains four significant figures? 1. 0.086 g 2. 0.431 g 3. 1003 g 4. 3870 g

A main function of a plant's seed is to

What are two metals found in the outer core