Answer:
iron
Explanation:
iron reacts with oxygen easily causing rust to form. the haemoglobin in your red blood cells contains haem which is iron and that's how your body transfers oxygen all over
Answer:
pumice and gneiss
Explanation:
both are formed by conduction of energy
Answer:
Element And Antomic Number
Cảm ơn tôi sau và theo tôi
Answer:
a) Q = 0.025 KJ/g
b) Q = 0.602 KJ/mol
Explanation:
ΔU = Q + W.....first law
∴ a constant volume: ΔV = 0
⇒ W = 0
⇒ ΔU = Q = CvΔT
∴ Cv = 3.024 J/°C
∴ ΔT = 1.126 °C
⇒ Q = (3.024 J/°C)×(1.126 °C ) = 3.405 J
⇒ Q = 3.405 E-3 KJ
a) Q [=] KJ/g
⇒ Q = (3.405 E-3 KJ) / (0.1375 g) = 0.025 KJ/g
b) Q [=] KJ/mol
∴ Mw Mg = 24.305 g/mol
⇒ Q = (0.025 KJ/g)×(24.305 g/mol) = 0.602 KJ/mol
C. Fluorine with an electronegativity of 4.0