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Glenna
Questions (11)
As a principal speaker in a debate talk for the motion teachers contribute in the failing of students in examination
0 answers
279 views
A solution contains 0.284 M sodium nitrite and 0.257 M nitrous acid. What is the pH of the solution?
1 answer
597 views
find the volume of a regular pentagonal pyramid whose sides measure 12m and height is 15m.
2 answers
679 views
When 20.8 g of calcium chloride, CaCl2, was dissolved in water in a calorimeter, the temperature rose from 25.0°C to 37.1°C.
1 answer
939 views
Calcium oxide (quicklime) reacts with water to produce calcium hydroxide (slaked lime).
CaO(s) + H2O(l) Ca(OH)2(s) ÄH = -65.2 kJ
2 answers
1,251 views
Acetic acid, HC2H3O2, is the sour constituent of vinegar (acetum is Latin for "vinegar" ). In an experiment, 3.76 g of acetic
1 answer
1,248 views
With a platinum catalyst, ammonia will burn in oxygen to give nitric oxide, NO.
4 NH3(g) + 5 O2(g) 4 NO(g) + 6 H2O(g) ÄH = -906
1 answer
1,436 views
Hydrogen peroxide, H2O2, is a colorless liquid whose solutions are used as a bleach and an antiseptic. H2O2 can be prepared in a
1 answer
3,040 views
The specific heat of copper metal was determined by putting a piece of the metal weighing 33.6 g in hot water. The quantity of
1 answer
977 views
The specific heat of copper metal was determined by putting a piece of the metal weighing 33.6 g in hot water. The quantity of
1 answer
740 views
Obtain the oxidation number for the element noted in each of the following.
Nb in NbO2 Br in KBrO4 Mn in KMnO4 Also I want to
2 answers
787 views
