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kumpel [21]
1 year ago
15

What happens when iodoform is heated with silver powder.​

Chemistry
2 answers:
mr_godi [17]1 year ago
7 0

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When iodoform is heated with silver it forms acetylene (ethyne) and silver iodide

\sf CHI_3 + 6Ag  +CHI_3 \xrightarrow{ \Delta}CH≡CH + 6AgI

wel1 year ago
4 0

When iodoform is heated with silver powder then it will form acetylene.

<h3>What is iodoform?</h3>

CHI3 is the chemical formula for iodoform, an organo-iodine compound. A pale yellow, crystalline, volatile chemical, it has a deep and unique smell and, akin to chloroform, sweetish taste. It's even used as a cleanser.

The reaction of iodoform is written as.

When iodoform will react with silver powder then it will form acetylene and silver nitrate.

CHI_{3} +6Ag+ CHI_{3} → C_{2} H_{2} + 6Ag I.

Therefore, when iodoform is heated with silver powder then it will form acetylene.

To know more about iodoform click here.

brainly.com/question/14985873.

#SPJ2

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The most common source of copper (cu) is the mineral chalcopyrite (cufes2). how many kilograms of chalcopyrite must be mined to
tigry1 [53]

Answer : 0.8663 Kg of chalcopyrite must be mined to obtained 300 g of pure Cu.

Solution : Given,

Mass of Cu = 300 g

Molar mass of Cu = 63.546 g/mole

Molar mass of CuFeS_2 = 183.511 g/mole

  • First we have to calculate the moles of Cu.

\text{ Moles of Cu}=\frac{\text{ Given mass of Cu}}{\text{ Molar mass of Cu}}= \frac{300g}{63.546g/mole}=4.7209moles

The moles of Cu = 4.7209 moles

From the given chemical formula, CuFeS_2 we conclude that the each mole of compound contain one mole of Cu.

So, The moles of Cu = Moles of CuFeS_2 = 4.4209 moles

  • Now we have to calculate the mass of CuFeS_2.

Mass of CuFeS_2 = Moles of CuFeS_2 × Molar mass of CuFeS_2 = 4.4209 moles × 183.511 g/mole = 866.337 g

Mass of CuFeS_2 = 866.337 g = 0.8663 Kg         (1 Kg = 1000 g)

Therefore, 0.8663 Kg of chalcopyrite must be mined to obtained 300 g of pure Cu.


3 0
3 years ago
Your teacher asks you to follow the instructions in a lab to produce several known chemical reactions. During these procedures,
vova2212 [387]

Answer:

There are five evidences that tell whether a chemical change has occurred. These are change of color, change of odor, change in temperature or energy, formation of gas and formation of a precipitate.

Explanation:

Chemical Change- This is a type of chemical reaction which occurs when the properties of one or more atoms change and results into a<u> newly formed substance. </u>

Let's have a further discussion of the evidences.

1. Change of Color- Color change is caused by the combination of two or more substance with different molecular structures. A popular example of this is the Statue of the Liberty, which is made of copper plates. Due to the exposure of copper to elements like water, it changed color.

2. Change of Odor- This can be best presented with rotting food. During the rotting process, the food undergoes a chemical reaction. The result is a rotten smell.

3. Change in Temperature or Energy- An example of this is the burning of wood. Its change is considered non-reversible.

4. Formation of Gas- This can be best presented with the cake batter (the one being used to make cakes or pancakes). The batter rises which means it is forming gas. This is caused by the reaction of the baking soda and the acid.

5. Formation of a Precipitate- This occurs when two soluble salts combine and their outcome is an insoluble salt (this is the precipitate).

Take note that if any of these evidences occur, then there's definitely a chemical reaction.

3 0
3 years ago
URGENT!! 7.(06.02 MC)
dolphi86 [110]

Answer:

3.B,E,F and G

Explanation:

1.A,B,C and H

5 0
2 years ago
Identify a predator from a Himalayan Mountain ecosystem. How else can this animal be classified in terms of feeding relationship
postnew [5]

Answer:

A snow leopard  is one of the top consumers in the Himalayas who lives in dens that are close to somewhere to look down to watch its prey. They also use it's large paws to climb up slopes and snow and a long tale to balance on thin spaces to catch markhhors.

Explanation:

<h3>(:</h3>
6 0
2 years ago
Scientific models _______. a. are based on a set of observations b. are used to replace experiments c. allow the study of existi
vladimir2022 [97]

Answer:

i would say C

Explanation:

You can only make a model of something if the real thing already exists.

3 0
3 years ago
Read 2 more answers
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