The balanced chemical reaction is:
<span>K2CrO4(aq) + PbCl2(aq) → 2KCl(aq) + PbCrO4(s)
We are given the amount of the reactants to be used for the reaction. These amounts will be the starting point of our calculations. </span>
<span>
3.0 M K2CrO4 (.500 L) = 1.5 mol K2CrO4
</span>1.5 mol K2CrO4 (1 mol PbCrO4 / 1 <span>mol K2CrO4</span>) ( 323.2 g/mol)=484.8 grams PbCrO4
Therefore, the best answer from the choices is 480 grams.
Answer:
Explanation:
Separately, the Carbon has 4 valence electrons so it gets 4 dots, and the Hydrogen has 1 valence electron, so it gets one dot. Together the carbon forms 4 single bonds with 4 hydrogens and together have 8 dots.
Answer:
Decreasing the concentration of N2O3
Explanation:
This is because the products on the right of the reaction occupy more space. One (1) mole of NO and another mole of NO2 will occupy more space than the one (1) mole of N2O3. Therefore decreasing the concentration of N2O3 will shift the reaction to the right because the products will have more space to occupy – hence favoring equilibrium.
<h3>
![\tt C.~Ka=\dfrac{[H^+][CN^-]}{[HCN]}](https://tex.z-dn.net/?f=%5Ctt%20C.~Ka%3D%5Cdfrac%7B%5BH%5E%2B%5D%5BCN%5E-%5D%7D%7B%5BHCN%5D%7D)
</h3><h3>Further explanation </h3>
According to Arrhenius, acids are substances which, when dissolved in water, release Hions.
An HₓY acid in water will ionize:
HₓY (aq) ⇒ xH⁺ (aq) + Yˣ- (aq)
In general, the weak acid ionization reaction
HA (aq) ⇒ H⁺ (aq) + A⁻ (aq)
Ka's value
![\large {\boxed {\bold {Ka \: = \: \frac {[H ^ +] [A ^ -]} {[HA]}}}}](https://tex.z-dn.net/?f=%5Clarge%20%7B%5Cboxed%20%7B%5Cbold%20%7BKa%20%5C%3A%20%3D%20%5C%3A%20%5Cfrac%20%7B%5BH%20%5E%20%2B%5D%20%5BA%20%5E%20-%5D%7D%20%7B%5BHA%5D%7D%7D%7D%7D)
So for HCN
HCN(aq)⇒H⁺(aq)+CN⁻(aq)
![\tt Ka=\dfrac{[H^+][CN^-]}{[HCN]}](https://tex.z-dn.net/?f=%5Ctt%20Ka%3D%5Cdfrac%7B%5BH%5E%2B%5D%5BCN%5E-%5D%7D%7B%5BHCN%5D%7D)
They have different charges and different masses.
Explanation:
Atom Protons Electrons Neutrons
a 6 6 6
R 7 8 7
The two atoms have different masses and different charges.
The mass of an atom is the sum of its number of protons and neutrons.
The charge is the difference between protons an electrons in the atom.
For atom a;
Mass = 6 + 6 = 12
charge = 6 - 6 = 0
For R:
mass = 7+ 7 = 14
charge = 7 - 8 = -1
We see that they have different masses and different charges.
learn more:
Number of subatomic particles brainly.com/question/2757829
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