The balanced half-reaction: Cr²⁺⁺(aq) → Cr⁴⁺(aq) + 2e⁻.
Chromium(II) cations two electrons and became chromium(IV) cations.
<span>Oxidation
reaction is increasing of oxidation number of element, because element or
ion lost electrons in chemical reaction.
</span><span>Reduction is lowering
oxidation number because element or ions gain electrons.</span>
Answer:
the answer is B the particles are not chemically bonded, they can only be combined in a certain set ratios
Explanation:
Answer:
Explanation:
The relationship between the speed of a wave, its frequency and its wavelength is given by the wave equation:
where
v is the wave speed
f is the frequency of the wave, which is the number of cycles completed by the wave in one oscillation
is the wavelength, which is the distance between two consecutive crests of the wave
For the wave in this problem we have:
v = 5000 m/s is the speed
is the wavelength of the wave
Solving for f, we find the frequency:
Answer:
2.03125g of acetylene
Explanation:
First thing's first, we have to write out the balanced chemical equation;
CaC2(s) + 2H2O(l) → Ca(OH)2(aq) + C2H2(g)
Water is in excess, so CAC2 is our limiting reactant. i.e it determines the amount of product that would be formed.
1 mol of CaC2 produces 1 mol of C2H2
In terms of mass;
Mass = Number of moles * Molar mass
where the molar mass of the elements are;
Ca = 40g/mol
C = 12g/mol
H = 1g/mol
CaC2 = 40+ (2*12) = 64g/mol
C2H2 =( 2 * 12) + ( 2 * 1) = 26g/mol
64g (1 * 64g/mol) of CaC2 produces 26g ( 1mol * 26g/mol) of C2H2
5g would produce x?
64 = 26
5 = x
Upon solving for x we have;
x = (5 * 26) / 64
x = 2.03125g
The reaction will proceed in the reverse direction in order to increase the concentrations of both CO and H2O and decrease that of CO2 and H2 until Q = K.
The reaction will proceed to the left
Step 1: The balanced equation
CO(g) + H2O(g) ⇌ CO2(g) + H2(g)
Step 2: Data given
Kp = 2.7
Number of moles of CO = 0.13 mol
Number of moles of H2O = 0.56 mol
Number of moles of CO2 = 0.62 mole
Number of moles of H2 = 0.61 mol
Volume = 2.0L
Step 3: Calculate Q
Pco = 0.13 / 1.92 P
Ph2o = 0.56 / 1.92 P
Pco2 = 0.62/1.92 P
Ph2 =0.61 / 1.92 P
Q = [CO2][H2] / [CO][H2O] = 5.2
Q > Kp The reaction will proceed to the left
The reaction will proceed in the reverse direction in order to increase the concentrations of both CO and H2O and decrease that of CO2 and H2 until Q = K.
To know more about concentrations of both CO and H2O
brainly.com/question/15237573
#SPJ4
