Only serious answers! i appreciate !
1.the volume of 3.50m hcl needed to make 275ml of 2.90...
Chemistry, 13.10.2019 04:00 hayesvolcano
Only serious answers! i appreciate !
1.the volume of 3.50m hcl needed to make 275ml of 2.90m hcl is
a. 153ml
b. 228ml
c. 255ml
d. 332ml
2. what mass of na2so4 is needed to make 1.8 l of 3.0 m solution? (na = 23 g; s = 32 g; o = 16 g
a. 142g
b. 334g
c. 767g
d. 1,534g
3. if the percent (mass/mass) for a solute is 6% and the mass of the solution is 300 g, what is the mass of solute in solution?
a. 18g
b. 36g
c. 72g
d. 180g
4. what is the molality of a solution containing 9.5 grams of solute in .75 kg of solvent? ( molar mass of solute is 33.2 g/mole)
a. 12.7m
b. 5.75m
c. 0.382m
d. 0.0789m
5. what is the freezing point of a solution of 0.650 mol sucrose in 750.0ml of water ? (kf of water = 1.86 deg c/m)
a. 1.61 deg c
b. 0.00 deg c
c. -1.61 deg c
d. it would not freeze
Answers: 2
Chemistry, 22.06.2019 07:30
Compare and contrast the bohr model and the electron cloud models of the atom.
Answers: 1
Chemistry, 22.06.2019 07:30
Label a-f based on the table using c for concentrated and d for dilute
Answers: 2
Chemistry, 23.06.2019 07:30
Which statement is actually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.
Answers: 2
Chemistry, 23.06.2019 09:00
20 grams of water. she poured out 15 grams. which of the following physical properties of the water changes? a .boiling point b. density c .electrical conductivity d .volume
Answers: 2
Mathematics, 06.05.2020 05:44
Mathematics, 06.05.2020 05:44
Chemistry, 06.05.2020 05:44
Computers and Technology, 06.05.2020 05:44
Mathematics, 06.05.2020 05:44
Mathematics, 06.05.2020 05:44