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Luden [163]
2 years ago
5

The blue underlined part of the chemical formula above represents a(n) ______________.

Chemistry
1 answer:
Nataly [62]2 years ago
7 0
I’m not totally sure but I think the answer is B
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Consider the following equilibrium: CO2(g) + C(graphite) 2CO(g); ΔH = 172.5 kJ The equilibrium constant for this reaction will
bezimeni [28]

Answer: Option (B) is the correct answer.

Explanation:

As the given reaction is as follows.

               CO_{2}(g) + C(graphite) \rightarrow 2CO(g)

Equilibrium constant for this reaction will be as follows.

             K_{c} = \frac{[CO_{2}]}{[CO]^{2}}

According to Le Chatelier's principle, when we increase the temperature then the equilibrium will shift towards the right hand side.

As a result, concentration of carbon dioxide will decrease whereas concentration of carbon monoxide will increase.

Thus, we can conclude that in the given reaction equilibrium constant for this reaction will decrease with increasing temperature.

 

8 0
3 years ago
Write the chemical formula for Calcium Dichromate
Vaselesa [24]

Answer:

Its right

Explanation:

The chemical formula of calcium dichromate is CaCr207

6 0
3 years ago
The concentration of gallium in silicon is 5.0 × 10−7 at%. What is the concentration in kilograms of gallium per cubic meter?
Step2247 [10]

Answer:

[ Ga ] = 1.163 E-8 Kg/m³

Explanation:

  • %wt = [(mass Ga)/(mass Si)]*100 = 5.0 E-7 %

⇒ 5.0 E-9 = m Ga/m Si

assuming: m Si = 100 g = 0.1 Kg

⇒ m Ga = (5.0 E-9)*(0.1 Kg) = 5 E-10 Kg

∴ density (δ) Si = 2.33 Kg/m³

⇒ Volume Si = (0.1 Kg)*(m³/2.33 Kg) = 0.043 m³

⇒ [ Ga ] = (5 E-10 Kg)/(0.043 m³) = 1.163 E-8 Kg/m³

⇒ [ Ga ] =

3 0
3 years ago
"Which statement is true about the removal of a terminal phosphate" from ATP? Choose one: A. The reaction is associated with a p
Mamont248 [21]

Answer:

C. The reaction is energetically favorable.

Explanation:

The reaction which shows the removal of the terminal phosphate from the ATP is shown below:

ATP+H_2O\rightarrow ADP+P_i+\ energy

The Gibbs' free energy change of this reaction, \Delta G^0=-7.3\ kcal/mol

Hence, Option A is not correct.

It is a type of hydrolysis reaction in which water is being added to the molecule.

Hence, Option B is not correct.

The Gibbs' free energy change is negative which means that the reaction is energetically favorable.

Option C is correct.

6 0
3 years ago
4. When you completed your experiment, you measured that 0.99 L of CO2 was released,
sergey [27]

Answer:

Sodium Carbonate was the unknown powder

7 0
3 years ago
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