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mezya [45]
3 years ago
6

Q3 You measure about 100 quarters...

Chemistry
1 answer:
tresset_1 [31]3 years ago
7 0
The answer is four hundred
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Balance the following chemical equation correctly.
maks197457 [2]

Explanation:

  1. 2H2+O2– 2H2O
  2. 3Al+Fe2O3– 3AlO+2Fe
  3. 2Na+2HCl– 2NaCl+2H
  4. CH4+O2– CO2+2H2
  5. H2O+SO3– H2SO4
6 0
3 years ago
1.72 moles of NOCI were placed in a 2.50 L reaction chamber
elena-14-01-66 [18.8K]

The equilibrium constant, Kc=0.026

<h3>Further explanation</h3>

Given

1.72 moles of NOCI

1.16 moles of NOCI  remained

2.50 L reaction chamber

Reaction

2NOCI(g) = 2NO(g) + Cl2(g).

Required

the equilibrium constant, Kc

Solution

ICE method

   2NOCI(g) = 2NO(g) + Cl2(g).

I    1.72

C   0.56           0.56         0.28

E   1.16              0.56         0.28

Molarity at equilibrium :

NOCl :

\tt \dfrac{1.16}{2.5}=0.464

NO :

\tt \dfrac{0.56}{2.5}=0.224

Cl2 :

\tt \dfrac{0.28}{2.5}=0.112

\tt Kc=\dfrac{[NO]^2[Cl_2]}{[NOCl]^2}\\\\Kc=\dfrac{0.224^2\times 0.112}{0.464^2}=0.026

4 0
3 years ago
What do parent and daughter cells have in<br> common? Check all that apply.
Vera_Pavlovna [14]

Answer:

Mitosis is common to all eukaryotes; during this process, a parent cell splits into two genetically identical daughter cells, each of which contains the same number of chromosomes as the parent cell.During meiosis, the cells needed for sexual reproduction divide to produce new cells called gametes.

5 0
3 years ago
Give the name of the element that is a member of the alkali metal family whose most stable ion contains 2 electrons.
notka56 [123]
Lithium

Li → Li⁺ + e⁻

Li 1s²2s¹ → Li⁺ 1s² + e⁻
3 0
4 years ago
Avogadro’s number is a constant that helps scientists count atoms and molecules. It is approximately equal to 602,200,000,000,00
larisa86 [58]

Avogadro’s number in Scientific notation is: 6.02x10^23

3 0
3 years ago
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