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Neko [114]
3 years ago
15

11. The least chemically reactive of the hydrocarbon

Chemistry
1 answer:
icang [17]3 years ago
3 0

Answer:

alkanes

Explanation:

allkanes only have a single bond

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When a certain powder is mixed into a solution of silver nitrate, a white precipitate forms. When the powder is added to a solut
atroni [7]

Answer:

Ammonium chloride

Explanation:

The powder is:- Ammonium chloride

When mixed with silver nitrate, white prescipitate of silver chloride is formed as:-

NH_4Cl+AgNO_3\rightarrow NH_4NO_3+AgCl

When mixed with sodium hydroxide, ammonia gas is formed which has noxious order.

NH_4Cl +NaOH\rightarrow NH_3 + H_2O + NaCl

Ammonia gas on reaction with nickel (II) hydroxide forms deep blue colored complex as shown below:-

Ni(OH)_2(s) + 6NH_3(aq)\rightarrow [Ni(NH_3)_6]^{2+}(aq) + 2OH^{-}(aq)

5 0
2 years ago
PLS HELP ME
creativ13 [48]

trucks need to be grounded for many reasons. One of the safety precautions is they reinforce the tank and put stay back stickers to prevent explosion.

Explanation:

common sense

3 0
2 years ago
Some atoms become unstable because (2 points)
emmainna [20.7K]
Atoms become unstable when the neutrons and protons are off-balance. Neutrons serve as a type of atomic “glue” that holds the nucleus together. Throw that ratio off balance, and the whole atom goes kaput.
5 0
3 years ago
Read 2 more answers
Which of the following reactions is endothermic?
Andreyy89
<h2>Which of the following reactions is endothermic-</h2><h2>½N2(g) + O2(g) + 8.1 kcal → NO2(g)</h2>

Explanation:

Chemical reaction

When two or more substances react and form some new substance it is called as chemical reaction .

A + B --> C + D

(reactants )   (products )

When ever chemical reaction occurs following changes can occur :

  • Change in colour
  • Ppt formation
  • energy changes
  • Change in state
  • Evolution of gas etc

On the basis of energy changes : reactions are of two types :

Endothermic

Exothermic

Endothermic reaction

A reaction in which heat is absorbed .

Example :½N2(g) + O2(g) + 8.1 kcal → NO2(g)

Exothermic reaction

A reaction in which heat is released .

For example : H2(g) + ½O2(g) → H2O(g), ΔH = -57.82 kcal

½N2(g) + 3/2H2(g) → NH3(g) + 11.0 kcal

C(diamond) + O2(g) → CO2, ΔH = -94.50 kcal

7 0
3 years ago
scientists often work on projects for a long time and fail to see sources of error in their research. Which process allows an ou
Natalka [10]

Answer is: Peer review.

Peer review is used to maintain quality standards, point to sources of error and improve performance.

Work on project is evaluated by people with similar competences (qualified members of a profession within the relevant field) as the scientist who are performing the work.

It is common in the field of health care.

4 0
3 years ago
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