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iVinArrow [24]
3 years ago
6

Will mark brainlist need help

Chemistry
1 answer:
Stella [2.4K]3 years ago
4 0

Answer:

0.219 mol HCI

Explanation:

Iron(II) sulfide reacts with hydrochloric acid according to the reaction:

FeS (s) + 2HCl (aq) → FeCl2 (s) + H2S (g)

A reaction mixture initially contains 0.223 mol FeS and 0.665 mol HCl.

Once the reaction has occurred as completely as possible, what amount (in moles) of the excess reactant remains?

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Which of the statements below correctly describes the chair conformations of trans-1,4-dimethylcyclohexane? A. The higher energy
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Answer:

D. The higher energy chair conformation contains two axial methyl groups.

Explanation:

The diaxial trans-1,4-dimethylcyclohexane has the highest energy (the least stable) and the diequatorial chair conformation has the lowest energy (the most stable).

The diaxial conformation has a higher energy due to the interaction between the methyl groups.

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4 years ago
Use the Lab Report document as a template. Use the descriptions and examples of each part to help you write your Lab Report. You
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3 years ago
What will be the primary result of the continuation of the
Olenka [21]

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B

Explanation:

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7 0
3 years ago
What is the speed of light of an orange light with a wavelength of 600nm and a frequency of 5.00x1014?
vovangra [49]

Answer:

3 × 10^8 m/s

Explanation:

The wavelength, can be calculated by using the following formula;

λ = v/f

Where;

λ = wavelength (m)

v = velocity/speed of light (m/s)

f = frequency (Hz)

According to the provided information in this question, λ = 600nm i.e. 600 × 10^-9m, f = 5.00 x 10^14 Hz

Hence, using λ = v/f

v = λ × f

v = 600 × 10^-9 × 5.00 x 10^14

v = 6 × 10^-7 × 5.00 x 10^14

v = 30 × 10^(-7 + 14)

v = 30 × 10^ (7)

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3 0
3 years ago
If the prescribed dosage of milk of magnesia Mg(OH)2 is 3.5 moles, how many grams
OlgaM077 [116]

Answer:

B

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