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Troyanec [42]
3 years ago
14

Type of change that doesn't involve the formation of new kind of matter

Chemistry
2 answers:
Artyom0805 [142]3 years ago
7 0
A physical change, ie tearing a piece of paper in half.
vovangra [49]3 years ago
3 0
A physical change, it's like breaking your pencil
You might be interested in
What is hydroxide ion concentration, [OH-], in a 1.37 x 10^-5 M solution of barium hydroxide (Ba(OH)2)?
Olegator [25]
Ba(OH)₂ is a strong base, therefore completely ionises in the solution as follows
Ba(OH)₂ --> Ba²⁺ + 2OH⁻
1 mol of Ba(OH)₂ gives out 2 mol of OH⁻
therefore number of OH⁻ moles are twice the amount of Ba(OH)₂ moles in the solution
hence,
[OH⁻] = 2[Ba(OH)₂]
therefore hydroxide ion concentration = 2 x 1.37 x 10⁻⁵ M
[OH⁻] = 2.74 x 10⁻⁵ M
coefficient = 2.74
exponent = -5
7 0
3 years ago
Sample Data - Grignard Reagents Reaction Characterization Type of reaction: choose the general type of reaction from the options
attashe74 [19]

Grignard reagent consists of any of numerous organic derivatives of magnesium (Mg), commonly represented by the general formula RMgX (in which R is a hydrocarbon radical: CH3, C2H5, C6H5, etc.; and X is a halogen atom, usually chlorine, bromine, or iodine).

What are Grignard Reagents?

In synthetic processes, Grignard reagents are used to create new carbon-carbon bonds. A extremely polar carbon-magnesium bond, in which the carbon atom has a partial negative charge and the metal a partial positive charge, characterizes a Grignard reagent.

The balanced equation for the formation of the Grignard reagent from bromobenzene is in the image.

To learn more about Grignard reagent visit:

brainly.com/question/20985645

#SPJ4

8 0
2 years ago
Chemistry!! Please help asap!! Will mark brainiliest!!
Whitepunk [10]
<h2>Answer:</h2><h3>Part 1. </h3>

Option B is correct option.

The half-reaction 2MnO2 + H2O + 2e- Mn2O3 is missing  OH- ions.

Explanation:

Full equation:

                                          2MnO2 + H2O + 2e-  → Mn2O3 + 2OH-

<h3>Part 2:</h3>

The option B which is Mg is stronger reducing agent than Ag is correct option.

Explanation:

Equation:

                               Mg(s) + 2Ag+ (aq) → Mg2+ (aq) + 2Ag(s)

According to equation Mg converts to Mg+2 which means it gives to electron to reduce Ag. So it act as an reducing agent.

<h3>Part 3:</h3>

The correct option is B. Which is  5, 1, 8, 5, 1, 4.

Explanation:

Full equation :

                  5 Fe²⁺ (aq) + MnO₄⁻ (aq) + 8 H⁺ (aq) --> 5 Fe³⁺ (aq) + Mn²⁺ (aq) + 4 H₂O (l)


<h3 />

5 0
3 years ago
A water molecule is composed of two hydrogen atoms and one oxygen atom arranged in a bent shape. Since oxygen is significantly m
Archy [21]

Answer: A)  polar molecule  

Explanation: Polar molecules are molecules which contain atoms of different electronegativities.

Non polar molecules are molecules which contains atoms of same electronegativities.

Water is a polar covalent molecule formed by unequal sharing of electrons. Oxygen being more electronegative tend to keep the electron pair towards itself thus generating a partial negative charge. The hydrogen acquire a partial positive charge thus resulting in a polar molecule.

The bent shape is due to repulsion between lone pairs and bond pairs of electrons.




8 0
3 years ago
Read 2 more answers
Look at the picture ​
Ronch [10]

Answer:

The strong electric force.

Explanation:

Trust me. If its wrong, comment on this, don't delete it. If someone else answers with the wrong question than other students might get the answer wrong. So if its right, say that it is, if its wrong, tell others what the real answer is.

3 0
2 years ago
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