Chemistry, 19.07.2019 19:00 2021andrewkell
When 1.00 g of boron is burned in o2(g) to form b2o3(s), enough heat is generated to raise the temperature of 733 g of water from 18.0 ∘c to 38.0 ∘c?
Answers: 1
Chemistry, 21.06.2019 21:00
What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?
Answers: 1
Chemistry, 22.06.2019 12:00
An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d
Answers: 3
Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
Chemistry, 22.06.2019 18:50
At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver
Answers: 1
When 1.00 g of boron is burned in o2(g) to form b2o3(s), enough heat is generated to raise the tempe...
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