In una soluzione salina, come si chiama il sale?
- AIl catalizzatore
- BIl solvente
- CIl soluto
- DIl precipitato
In una soluzione salina, come si chiama il sale?
Which gas is needed for a fuel to burn (combustion)?
How many electrons are shared in a double covalent bond?
Un atomo di cloro-37 ha 17 protoni. Quanti neutroni ha?
How many covalent bonds does a carbon atom usually form?
How much heat is needed to raise the temperature of 100 g of water by 10 °C (specific heat of water = 4,18 J/g·°C)?
Which list puts fluorine, chlorine and bromine in order of increasing electronegativity?
Carbon-14 (atomic number 6) decays by emitting a beta particle. What does it become?
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