Chemistry, 07.12.2020 08:50 calebnlocke
suppose that there were two isotopes of sodium. 28% of the naturally occurring sodium Adams had a massive 22, and 72% Adams had a mass of 23. What would the average atomic weight of sodium be?
Answers: 2
Chemistry, 22.06.2019 02:10
When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)
Answers: 3
Chemistry, 22.06.2019 14:30
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
Answers: 1
Chemistry, 23.06.2019 00:00
The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?
Answers: 1
suppose that there were two isotopes of sodium. 28% of the naturally occurring sodium Adams had a ma...
Mathematics, 12.08.2020 06:01
Mathematics, 12.08.2020 06:01
Mathematics, 12.08.2020 06:01
Mathematics, 12.08.2020 06:01