Chemistry, 22.10.2019 13:00 anglacx5465
The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. a 7.51-g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated hcl(aq) and passed over a reducing agent so that all the antimony is in the form sb3 (aq). the sb3 (aq) is completely oxidized by 37.1 ml of a 0.115 m aqueous solution of kbro3(aq). the unbalanced equation for the reaction is
bro3-(aq)+sb+3(> br-(aq)+sb+5(aq) (unbalanced)
calculate the amount of antimony in the sample and its percentage in the ore.
Answers: 3
Chemistry, 21.06.2019 13:30
Aforce of attraction/repulsion due to the spin of electrons what is this force?
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Chemistry, 22.06.2019 15:10
The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion.what is the frequency f of oscillation?
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Chemistry, 22.06.2019 19:00
Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
Answers: 1
The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an o...
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