Answer:
It was fused from 3 helium nuclei in the core of a red giant star long before the Sun existed
Explanation:
Answer:
element
Explanation:
elements consist of pure substances
Answer:
7
Explanation:
The mass number is neutrons plus protons
Answer:
19.8 kg of C₂H₂ is needed
Explanation:
We solve this by a rule of three:
If 1251 kJ of heat are relased in the combustion of 1 mol of acetylene
95.5×10⁴ kJ of heat may be released by the combustion of
(95.5×10⁴ kJ . 1) /1251kJ = 763.4 moles of C₂H₂
Let's convert the moles to mass → 763.4 mol . 26 g/1 mol = 19848 g
If we convert the mass from g to kg → 19848 g . 1kg / 1000g = 19.8 kg
I don’t see nun tho where’s the objects
