NH3(g) + HCl(s) → NH 4Cl (s) The entropy change in the system above is
NH3(g) + HCl(s) → NH 4Cl (s) The entropy change in the system above is A. positive B.…
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When sugar is dissolve in tea, the reaction is accomplished by
When sugar is dissolve in tea, the reaction is accomplished by A. positive change B. negative entropy change…
The elements that belong to the third period of periodic table are
The elements that belong to the third period of periodic table are A. Li, Be, Al and D…
An oxidation state of Cr in K2Cr2O7
An oxidation state of Cr in K2Cr2O7 A. 7 B. 6 C. 5 D. 4 Correct Answer: Option…
What volume of 0.5mldm3 H2SO4 will exactly neutralize 20cm3 of 0.1moldm3 NaOH Solution?
What volume of 0.5mldm3 H2SO4 will exactly neutralize 20cm3 of 0.1moldm3 NaOH Solution? A. 2.0cm3 B. 5.0cm3 C.…
A compound contains 40.0% carbon, 6.7% hydrogen and 53.3% oxygen. If the molar mass of…
A compound contains 40.0% carbon, 6.7% hydrogen and 53.3% oxygen. If the molar mass of the compound is…
The basic particles from which matter could be made up of are as follow, except?
The basic particles from which matter could be made up of are as follow, except? A. Salt B. Atom C. Ion…
The energy value of petrol can be determined by
The energy value of petrol can be determined by A. Bomb calorimeter B. Catalytic cracker C. Fractionating column…
Cu2S(s) + O2(g) = 2CU(s) + SO22(g)
Cu2S(s) + O2(g) = 2CU(s) + SO22(g) A. +1 to 0 B. 0 to +2 C. +2 to…
Which of these radioactive elements is commonly used as a nuclear fuel
Which of these radioactive elements is commonly used as a nuclear fuel A. uranium B. palladium C. actium D. thorium…