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3 years ago

What is the frequency of an electromagnetic wave that has a wavelength of 4.55x10-3m

Chemistry

1 answer:

djverab [1.8K]3 years ago

5 0

Answer:

hnjilbglu

Explanation:

nbjl,bhuk

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Phosgene, a poisonous gas, when heated will decompose into carbon monoxide and chlorine in a reversible reaction: COCl2 (g) <

Advocard [28]

Answer:

8.08 × 10⁻⁴

Explanation:

Let's consider the following reaction.

COCl₂(g) ⇄ CO (g) + Cl₂(g)

The initial concentration of phosgene is:

M = 2.00 mol / 1.00 L = 2.00 M

We can find the final concentrations using an ICE chart.

COCl₂(g) ⇄ CO (g) + Cl₂(g)

I 2.00 0 0

C -x +x +x

E 2.00 -x x x

The equilibrium concentration of Cl₂, x, is 0.0398 mol / 1.00 L = 0.0398 M.

The concentrations at equilibrium are:

[COCl₂] = 2.00 -x = 1.96 M

[CO] = [Cl₂] = 0.0398 M

The equilibrium constant (Keq) is:

Keq = [CO].[Cl₂]/[COCl₂]

Keq = (0.0398)²/1.96

Keq = 8.08 × 10⁻⁴

4 0

4 years ago

Drag each label to the correct location on the image.

kap26 [50]

Answer:

1.Products

2.Reactants

3.Activation

4.Chemical potential energy

5.Energy

6.Activated

7.Complex

8.Progress of reaction

9.Enthalpy of Reaction

7 0

3 years ago

Atoms of the LEAST reactive elements tend to have A. one or seven valence electrons. B. eight valence electrons. C. four or five

Tomtit [17]

B. eight valence electrons.

3 0

3 years ago

Read 2 more answers

Which takes longer to bake, chocolate chip cookies or oatmeal cookies? What

kolezko [41]

Answer:

oatmeal cookies

Explanation:

3 0

3 years ago

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What is the concentration, in millimolar, of a 1 mg/ml solution of NaCl (molecular weight = 58 Da)?

sineoko [7]

Explanation:

Relation between molarity and molar mass is as follows.

Molarity = $\frac{mass}{\text{molar mass}} \times \frac{1000}{V (in ml)}$

It is given that mass is 1 mg/ml which is also equal to $10^{-3}$ g.

Molecular mass = 58 Da = 58 g/mol

Volume = 1 ml

Therefore, calculate molarity as follows.

Molarity = $\frac{mass}{\text{molar mass}} \times \frac{1000}{V (in ml)}$

= $\frac{10^{-3}g}{58 g/mol} \times \frac{1000}{1 ml}$

= 0.0172 molar

It is known that 1 molar equals 1000 millimolar.

So, 0.0172 molar = $0.0172 molar \times \frac{1000 millimolar}{1 molar}$

= 17.2 millimolar

Thus, we can conclude that the concentration of given solution is 17.2 millimolar.

6 0

3 years ago