Which row shows a gas that would deviate the least from ideal gas behaviour?
Levels: HL
M25-CHEM-HL-TZ1-P1A-Q7
Which row shows the correct formula and electron configuration of the species in calcium nitride?
M25-CHEM-HL-TZ1-P1A-Q9
In which of the following molecules do all atoms obey the octet rule? I. \( NF_3 \) II. \( BF_3
M25-CHEM-HL-TZ1-P1A-Q1
The diagram below shows the behaviour of protons, neutrons and electrons in an electric field. The particle beam splits into
Q-8FE8A (Set 5)
A sample of bromine has the following composition by mass: \( {}^{79}Br \) 50.75% \( {}^{81}Br \) 49.25%
Q-8FE8A (Set 4)
Bromoethane, \( C_{2}H_{5}Br \), is produced by reacting ethene, \( C_{2}H_{4} \), with hydrogen bromide, HBr. \( C_{2}H_{4}(g)+HBr(g)\rightarrow C_{2}H_{5}Br(l) \)
Q-8FE8A (Set 3)
Phenylethene (styrene) is produced from ethylbenzene in a gas-phase equilibrium. Ethylbenzene, \( C_{8}H_{10}(g)\rightleftharpoons \) Styrene, \( C_{8}H_{8}(g) \) + Hydrogen,
Q-8FE8A
Nitrogen monoxide, \( NO(g) \), is produced in internal combustion and jet engines.
Q-8FE8A (Set 2)
Nitric acid, \( HNO_{3} \), is a strong acid.
Q-F7D10 (Set 5)
Transition elements are known for having multiple oxidation states, forming coloured compounds and acting as catalysts. The existence of variable