An irregular chunk of unknown metal has a density of 7.87 g/cm3. A 14.5 gram chunk is added to a graduated cylinder. If the final volume of the graduated cylinder is 39.8 ml, what would be the starting volume? A) 41.6
B) 35.5
C) 37.96
D) 1.84

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate