The property that determines an atom;s ability to attract electrons shared in a chemical bond is electronegativity. The correct answer is C.
The answer is true.the molecule becomes reduced.
Answer:
The anwer is not D the anwer is A
Explanation:
Answer:
–4020 KJ
Explanation:
The following data were obtained from the question:
H₂(g) + F₂(g) —> 2HF(g) ΔH = –536 KJ
Next, we shall determine the mass of H₂ that reacted from the balanced equation to produce –536 KJ of heat energy. This can be obtained as follow:
Molar mass of H₂ = 2 × 1 = 2 g/mol
Mass of H₂ from the balanced equation = 1 × 2 = 2 g.
Summary:
From the balanced equation above,
2 g of H₂ reacted to produce –536 KJ of heat energy.
Finally, we shall determine the heat change produced by the reaction of 15 g of H₂. This can be obtained as follow:
From the balanced equation above,
2 g of H₂ reacted to produce –536 KJ of heat energy.
Therefore, 15 g of H₂ will react to produce = (15 × –536)/2 = –4020 KJ of heat energy.
Thus, the heat change for the reaction is –4020 KJ
Answer:
In 0.7 liters (700 ml) there are 122, 85 grams of NaCl
Explanation:
We calculate the weight of 1 mol of NaCl:
Weight 1 mol NaCl= Weight Na + Weight Cl= 23+35,5 g= 58,5g/mol
1 mol NaCl-------58,5 g
3mol NaCl -------x= (3mol NaClx58,5 g)/1 mol= 175, 5 g
3M (175,5 g in this case)---> 3 moles in 1 L of solution
1 L-----175,5 g NaCl
0,7L--x= (0,7Lx175,5 g NaCl)/1L =122,85 g NaCl
