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3 years ago

write down the name and molecular formula of the compound which gives hydrogen ion and chloride ion in the solution state.

Chemistry

1 answer:

Reptile [31]3 years ago

3 0

Answer:

Hydochloric acid

HCl

Explanation:

Hydrochloric acid is an acid and ionizes to form hydrogen and chloride ions.

The name of the compound that gives hydrogen ion and chloride ions in the solution state is Hydrochloric acid.

Hydrochloric acid is made up of one atom of hydrogen and 1 atom of chlorine. We can also say, it is made up of 1 mole of hydrogen and 1 mole of chlorine.

The formula of this compound is HCl;

In solution:

HCl $_{aq}$ → H⁺ + Cl⁻

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If the aluminum block is initially at 25 ∘C∘C, what is the final temperature of the block after the evaporation of the alcohol?

Effectus [21]

Answer:

Final temperature of aluminum block = 12.1°C

Note: The question is not complete. The complete question is given below:

If the aluminum block is initially at 25 ∘C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25 ∘C. Heat of vaporization of the alcohol at 25 ∘C is 45.4 kJ/mol Suppose that 1.12 g of rubbing alcohol (C3H8O) evaporates from a 73.0 g aluminum block.

Explanation:

Heat lost by aluminum block = heat required for vaporization of alcohol

Heat required to vaporize ethanol, H = mass of alcohol * heat of vaporization of alcohol

Mass of alcohol = 1.12 g; molar mass of rubbing alcohol = 60 g/mol

Heat of vaporization = (45.4 kJ/mol)/ 60 g/mol = 0.75666 kJ/g

H = 1.12 g × 0.7566 kJ/g

H = 0.8474 kJ = 847.4 J

Heat lost by aluminum block, Q = -(mass × specific heat capacity × temperature change)

Mass of aluminum block = 73.0 g

Specific heat capacity of aluminum = 0.900 J/g

Temperature change = (Final temperature, T - 25)

Q = -73.0 g × 0.900 J/g × (T - 25)

Q = -65.7 J × (T - 25°C)

Since, Heat lost by aluminum block = heat for vaporization of alcohol

-65.7 J × (T - 25°C) = 847.4 J

T - 25 = 847.4/-65.7

T - 25 = -12.9

T = -12.9 + 25

T = 12.1°C

5 0

3 years ago

PLZ HELP ME!!!!!! BEING TIMED!!!!!

amid [387]

Answer:

3 one

Explanation:

3 0

3 years ago

In a paragraph, explain what the story of the Gadarene demoniac teaches us about our life in Christ.

GarryVolchara [31]

Answer:

Just like the previously possessed man told people about his new life in Christ, we, too, should share about our new life in Christ.

Explanation:

The story of the demonaic is about a possessed man whose unclean spirits were sent out by Jesus. The spirits were sent into the pigs of the people who raised them to sell for profit (some of which were the Jew's pigs,) and they ran off the cliff and drowned. The owners of these pigs knew that Jesus did it to save the man but still were mad and wanted nothing to do with Jesus. They told Him to leave even though He saved the possessed man who they had previously tried to help. The man wanted to travel with Jesus, but He told the healed man to depart from Him and go to the people and share his story and how Jesus helped Him, and he obeyed. Just like the previously possessed man told people about his new life in Christ, we, too, should share about our new life in Christ.

Hope this helps. Don't hate me if it's wrong but this is what I found.

6 0

2 years ago

How many grams of water when supplied with 348j of heat will gain a temperature of 5.2°c?

Zielflug [23.3K]

We can use the heat equation,

Q = mcΔT

Where Q is the amount of energy transferred (J), m is the mass of the substance (kg), c is the specific heat (J g⁻¹ °C⁻¹) and ΔT is the temperature difference (°C).

In this problem there is no any data about initial temperature of the water. So, we can assume that given temperature of 5.2 °C as the temperature difference.

Q = 348 J

m = ?

c = 4.186 J g⁻¹ °C⁻¹

ΔT = 5.2 °C

By applying the formula,
348 J = m x 4.186 J g⁻¹ °C⁻¹ x 5.2 °C
m = 15.99 g

Hence, the grams of water is 15.99.

8 0

3 years ago

Be sure to answer all parts. Acetone is one of the most important solvents in organic chemistry. It is used to dissolve everythi

Kazeer [188]

Answer:

Half life = 79.67 sec

Explanation:

Given that: