Bay 101: Wetlands POST Lesson Review

dalvyx [7]

Given data:
1). One mole of Aluminium oxide requires one mole of O2.

Required:
1) number of moles of Aluminium oxide when 15 moles of Cohen is produce?

••••••••••••••SOLUTION•••••••••••••

From the balance equation;

1 mole of Aluminium oxide when decomposes it produce 1 mole of oxygen. Similarly when 1.5 moles of Aluminium oxide decomposes it will releases 1.5 moles of oxygen.

1.5 Al2O3—————1.5 O2

8 0

3 years ago

CrO42- + NO+ 4H+NO3- + Cr3++ 2H2O In the above redox reaction, use oxidation numbers to identify the element oxidized, the eleme

BaLLatris [955]

Answer:

- Element oxidized: N.

- The element reduced: Cr.

- The oxidizing agent: Chromium.

- The reducing agent: Nitrogen.

- Formula of the oxidizing agent: (CrO₄)²⁻

- Formula of the reducing agent: NO.

- name of the element oxidized: nitrogen.

- name of the element reduced: chromium.

Explanation:

Hello,

In this case, the redox reaction is:

$(CrO_4)^{2-} + NO + 4H^+\rightarrow (NO_3)^- + Cr^{3+} + 2H_2O$

In such a way, each element has the following oxidation state distribution:

$(Cr^{6+}O_4)^{2-} + N^{2+}O^{2-} + 4H^+\rightarrow (N^{5+}O^{2-}_3)^- + Cr^{3+} + 2H_2^{+}O^{2-}$

Thus, it seen that:

- The oxidized element is nitrogen as its oxidation state changes from 2+ to 5+. In addition, it is the reducing agent since it undergoes oxidation.

- The reduced element is chromium as its oxidation state changes from 6+ to 3+. In addition, it is the oxidizing agent since it undergoes reduction.

Hence, in order to answer:

- Element oxidized: N.

- The element reduced: Cr.

- The oxidizing agent: Chromium.

- The reducing agent: Nitrogen.

- Formula of the oxidizing agent: (CrO₄)²⁻

- Formula of the reducing agent: NO.

- name of the element oxidized: nitrogen.

- name of the element reduced: chromium.

Best regards.

6 0

3 years ago

Scientific knowledge is generally considered to have a positive effect on society. In which situation would scientific knowledge

avanturin [10]

D.
Misinterpretation of scientific knowledge for the influence of public opinion has been a repeating problem over the past, and usually creates a rift between the scientific community and the general public.

8 0

4 years ago

Read 2 more answers

Which definition of isotopes is correct?A atoms of different elements which have the same number of electronsB atoms of differen

N76 [4]

Answer:

D atoms of the same element which have different numbers of neutrons

Explanation:

Isotopy is the existence of two or more atoms of the same element having the same atomic number but difference mass number due to differences in the number of neutrons in their various nuclei.

These atoms are called isotopes
Isotopes of an element have the same electronic configuration.
They have the same chemical properties but only differ in their masses due to the difference in the number of neutrons.

7 0

3 years ago

How many sigma and pi bonds, respectively, are in the molecule below? ch3ch2chchch3?

klio [65]

14 sigma bonds, 1 pi bond

8 0

4 years ago