What number of particles is 50.2 grams of XY2? The symbol "^" represents an exponent. You must fill in the the base number (round to the tenths) and the exponent. The exponent should be a whole number x 10^ particles
Element
Molar Mass (g/mol)
X
12.01
Y
16.00
Z
1.01
Q
14.01
R
32.06
S
19.00

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.      

the answer is option a.