The coefficients : 3, 2, 1,3
<h3>Further explanation</h3>
Given
Reaction
Mg + H3PO4 -> Mg3(PO4)2 + H2
Required
The coefficients
Solution
Steps to balance reactions:
1. Give a coefficient(The most complex compound is assigned a coefficient of 1)
aMg + bH₃PO₄ ⇒ Mg₃(PO₄)₂ + cH₂
2. Make an equation
Mg, left = a, right = 3 ⇒a=3
P, left = b, right = 2⇒b=2
H, left = 3b, right = 2c⇒3b=2c⇒3.2=2c⇒2c=6⇒c=3
The equation becomes :
<em>3Mg + 2H₃PO₄ ⇒ Mg₃(PO₄)₂ + 3H₂</em>
Since the leaving ability of the halide ions increasees as the basicity of the halide decreases.
If the basicity of the halide decreases as the its conjugate acid is strong.
Since the pKa value of conjuage acid of haldie is 3, it is a weak acid. So, it halide is not a good leaving group.
Therefore the answer is No, because a good leaving group is the conjugate base of a strong acid. The halide not acidic enough to be a good leaving group.
Answer:
5.10¹¹ N/C
Explanation:
As we have a proton and a neutron, we can consider that they both have the same charge, this is:
e- = e+ = |1,6x10⁻¹⁹ C| , this number is in absolute value
Then, the formula needed to calculate the magnitude of the electric field from a charged particle is:
E= kqQ/r²
Where:
K= Coulomb constant
Q= charge
r = distance between two charges
Then:
E= 8.99x10⁹N/C²*(1.6x10⁻¹⁹C)/(5.3x10⁻¹¹m)²
E=5.12x1011 N/C
It is important that this value is a magnitude, it does not have any sign (positive or negative), for the magnetic field
1 L ------------------ 1000 cm³
1.30 L --------------- ??
1.30 x 1000 / 1 => 1300 cm³
Gay-Lussacs law relates the pressure of gas with temperature when all the other conditions are kept constant.
It states that for a fixed amount of gas, pressure of gas is directly proportional to temperature when the volume is constant.
where P - pressure, T- temperature and k - constant
temperature has been given in Celsius, we need to convert to Kelvin
Temperature in K = Temperature in Celsius + 273.15
1st instance T1 = 35 °C + 273.15 = 308.15 K
P1 = 97 kPa
2nd instance T2 = 75 °C + 273.15 = 348.15 K
P2 - needs to be calculated using following equation
P2 = (97 x 348.15)/308.15
P2 = 110.0 kPa