8 Which quantity is equal to one mole of Au? (1) the atomic mass in grams

(2) the atomic number in grams

(3) the mass of neutrons in grams

(4) the number of neutrons in grams

The nucleus of an atom is A. negatively charged and has a high density B. positively charged and has a high density C. positively charged and has a low density D. negatively charged and has a low density

Under which conditions will sugar most likely dissolve fastest in a cup of water? a a sugar cube with stirring at 5°C b a sugar cube without stirring at 15°C c sugar crystals without stirring at 5°C d sugar crystals with stirring at 15°C

Andre adds a spoonful of baking soda to a glass of vinegar. Bubbles begin to appear in the vinegar. The bubbles signal the formation of a

if water absorbs 0.779j and has a mass of 0.4866g, how much would its temperature go up? a) 0.383 C b) 7.458 C c) 0.137 C d) 0.233 C

An unknown compound is discovered in a raid on a terrorist organization; it is believed that the compound is Sarin. When a 10.0-gram sample of this compoun is completely combusted, 15.6 g CO2 and 6.

True or False? Urea has a high solutiblity in water, due in part to its ability to form hydrogen bonds

Give a reasonable explanation why segments 2 and 4 are not associated with temperature increases even though heat is added a constant rate.

20.0 g of Nitrogen is produced when oxygen gas reacts with NO gas. 29.8 L of oxygen is required at STP to produce this 20.0 g of NO. A. yes B. false

What are some chemical properties of Nitrogen?

How many grams of Cl are in 150g of CCl4 if CCl4 has 92.2% of Cl?