Elize has been keeping in touch with her cousin Fernando since he moved from California to Buenos Aires. During her Zoom call with Fernando on June 21st, Elize makes sure to tell him to put on his hat and coat before he goes outside. Elize’s little sister asks why Fernando would be cold in Argentina, if it’s so hot in California. Knowing what we know about the tilt of the Earth and the cause of the seasons, what should Elize tell her sister?

coral.

explanation:

coral. many marine organisms that produce calcium carbonate shells or skeletons are negatively impacted by increasing co2 levels and decreasing ph in seawater.

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g

a chemical change results in a new substance being formed; whereas a physical change will result in a different state of matter

explanation: