Most of the mass in an atom is found in the...?

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6