How much energy is required to convert 10g of ice at -15c into steam at 125c
hvap= 40.67 kj/mol

hfus=6.01 kj/mol

cp(ice)= 37.1 j/(mol*c)

cp(water)= 75.3 j/(mol*c)

cp(steam)=33.6 j/(mol*c)

particle   p is an electron and particle q is a neutron

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o