How much heat is needed to raise the temperature of 7g of water by 18oC?

As distance between two objects increases, gravitational force: decreases right? increases decreases remains the same

Will a precipitate form (yes or no) when 50.0 ml of 1.2 * 10-3 m pb (no3) 2 are added to 50.0 ml of 2.0 * 10-4 m na2s? if so, identify the precipitate.

Which of the following describes nuclear fission? It requires extremely high temperatures to begin the reaction. It involves the combining of nuclei. It involves bonding electrons. Its chain reactions can be initiated by neutrons.

What is the mass of a paperclip?

Which statement is true of phenolphthalein? a. It can be used in combustion reactions. b. It is colorless in the presence of an acid and pink in the presence of a base. c. It gives you the exact pH of a solution. d.

1) What is the electron configuration of an electrically neutral atom of sodium? 2) What is the electron configuration of an electrically neutral atom of neon? 3) What is the electron configuration of an electrically neutral atom of oxygen?

5.1 ounces to grams.

Flowering plants reproduce from seeds which role does an Apple play in this process

What would make bromine a group 17 element more similar to a noble gas

Use the following chemicals. ethanol, hexane, butanone, water, benzene, diethyl ether, ethyl acetate, acetone 4. Rank the solvents based on polarity, smallest to largest.