Hey there!
SiO₂ + HF → SiF₄ + H₂O
The problem here is that there is not an equal amount of O, H, or F atoms on both sides of the equation.
So let's balance!
Balance F.
1 on the left, 4 on the right. Add a coefficient of 4 in front of HF.
SiO₂ + 4HF → SiF₄ + H₂O
Balance H.
4 on the left, 2 on the right. Add a coefficient of 2 in front of H₂O.
SiO₂ + 4HF → SiF₄ + 2H₂O
Balance O.
2 on the left, 2 on the right. Already balanced.
Balance Si.
1 on the left, 1 on the right. Already balanced.
Our final balanced equation: SiO₂ + 4HF → SiF₄ + 2H₂O
Hope this helps!
I may be totally wrong but I’ll make a guess to it being thermodynamics.
Answer:
There will be 3 peaks.
Relative height of the atomic peaks would be; 158, 160 and 162
Explanation:
We are told that Bromine has two isotopes namely 79Br and 81Br in a 1 : 1 ratio (50 : 50).
This means that a compound which contains 1 bromine atom will have two peaks in the molecular ion region but it depends on which bromine isotope is contained in the molecular ion.
Thus;
Relative height of atomic peaks is given by;
m/z = 79Br¯ 79Br+ = 158
79Br¯ 81Br+ = 160
81Br¯ 81Br+ = 162
Answer:
-245.7°C es la temperatura del gas bajo 100 torr
Explanation:
Para resolver esta pregunta debemos hacer uso de la ley de Boyle que establece que la presión de un gas es directamente proporcional a la temperatura de este cuando el volumen permanece constante. La ecuación es:
P1T2 = P2T1
<em>Donde P es presión y T temperatura absoluta del estado inicial, 1, y final, 2.</em>
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Reemplazando:
P1 = 1000torr
T2 = ? -Incógnita-
P2 = 100torr
T1 = 273K -Temperatura del hielo fundido = 0°C = 273K
1000torrT2 = 100torr273
T2 = 27.3K
27.3K - 273 =
<h3>-245.7°C es la temperatura del gas bajo 100 torr</h3>
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