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Lisa [10]
4 years ago
5

What is an example of a system in a state of balance?

Chemistry
1 answer:
Rudik [331]4 years ago
5 0
For example, while the flow of fluid through a tube or electricity through a network could be in a steady state because there is a constant flow of fluid or electricity, a tank or capacitor being drained or filled with fluid is a system in transient state, because it’s volume of fluid changes with time
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Finish the following word equation.<br><br> calcium + nitric acid →
Dafna1 [17]
HNO3 + Ca —-> H2O + N20 + Ca(NO3)2
4 0
3 years ago
N204(0) + 2NO2(g)
user100 [1]

setup 1 : to the right

setup 2 : equilibrium

setup 3 : to the left

<h3>Further explanation</h3>

The reaction quotient (Q) : determine a reaction has reached equilibrium

For reaction :

aA+bB⇔cC+dD

\tt Q=\dfrac{C]^c[D]^d}{[A]^a[B]^b}

Comparing Q with K( the equilibrium constant) :

K is the product of ions in an equilibrium saturated state  

Q is the product of the ion ions from the reacting substance  

Q <K = solution has not occurred precipitation, the ratio of the products to reactants is less than the ratio at equilibrium. The reaction moved to the right (products)

Q = Ksp = saturated solution, exactly the precipitate will occur, the system at equilibrium

Q> K = sediment solution, the ratio of the products to reactants is greater than the ratio at equilibrium. The reaction moved to the left (reactants)

Keq = 6.16 x 10⁻³

Q for reaction N₂O₄(0) ⇒ 2NO₂(g)

\tt Q=\dfrac{[NO_2]^2}{[N_2O_4]}

Setup 1 :

\tt Q=\dfrac{0.0064^2}{0.098}=0.000418=4.18\times 10^{-4}

Q<K⇒The reaction moved to the right (products)

Setup 2 :

\tt Q=\dfrac{0.0304^2}{0.15}=0.00616=6.16\times 10^{-3}

Q=K⇒the system at equilibrium

Setup 3 :

\tt Q=\dfrac{0.230^2}{0.420}=0.126

Q>K⇒The reaction moved to the left (reactants)

8 0
3 years ago
Read 2 more answers
A compound whose water solution conducts electricity and turnsphenolphthalein pink is(1) HCl (3) NaOH(2) HC2H3O2 (4) CH3OH
Anna35 [415]
A strong base turns phenolphthalein pink, so the answer is (3) NaOH
8 0
4 years ago
How can a roman numeral in a chemical name be used to write a chemical<br> formula?
Oxana [17]

Answer:

Roman numerals in a chemical formula indicate the charge on the metal cation before them. They are used in situations where the multiple oxidation states are available to the metal. For example, iron can be both 2+ and 3+, so to distinguish between the two, we use iron (II) and iron (III) respectively.

Hope i helped!

4 0
3 years ago
Read 2 more answers
Identify each enthalpy change by name and classify each change as exothermic or endothermic.
Len [333]
We classify them as follows:

1. 1 mol NaCl (s) à 1 mol NaCl(l) 
C Molar heat of fusion; endothermic

2. C4H10 O(l) à C4H10O (g) 
B Molar heat of vaporization; endothermic

3. H2O(g) à H2O (l) 
D Molar heat of condensation; exothermic

4. 1 mol NaCl(s) + 3.88 kJ/molà 1 mol NaCl(aq) 
A Molar heat of solution; endothermic
3 0
3 years ago
Read 2 more answers
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