Electrons can become excited if it is given extra energy
Exampes:
⁻absorbs a photon
⁻absorbs packet of light
⁻absorbs collides wit nearby atom
⁻absorbs particles.
Answer:
0.00015dm³
Explanation:
the equation gives
C + O2 — CO2
40min × 60s/1min = 2400s
0.70g/s ÷ 2400s =0.00029g
no of mole = mass/molar mass
molar mass of Co2 = 44g/mol
no of mole = 0.00029/44 = 6.59×10^-6mol
volume at STP since its a gas
1 mol — 22.4dm³
6.59×10^-6 — 22.4×6.59×10^-6/1 = 0.00015dm³
*this is the only way i could think of so am not 100% sure
Answer:
Anion is negatively charged particle.
Calcium +2. Its cation
Oxygen -2
Explanation:
An anion is a charged particle with a negative charge. Anions has charge of -1
Oxygen require two electrons to complete its octet and hence its charge is -2
Calcium is a cation and has a positive charge of +2
ANSWER : G. Herbivores and carnivore
EXPLANATION : Because they feed off plants crops and small animals
