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Dmitrij [34]
3 years ago
11

** WILL MARK BRAINLIEST **

Chemistry
2 answers:
Julli [10]3 years ago
6 0

Answer:

C. Water expands on cooling below 4 °C, increasing in volume until it reaches 0 °C.

Explanation:

The volume occupied by ice is greater than the volume of water.

The maximum density of water is at 4°C.

The hydrogen bond in ice gives it an open cage like structure which makes it volume higher and density lower as compared to liquid water. As we increase the temperature the volume decreases due to breaking of these bonds so its density increases till 4°C. After this temperature the increase in volume due to change in state is more and thus its volume increases and density decreases.

hram777 [196]3 years ago
3 0

It is c I hope I helped out with this question!.

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The products
alexandr1967 [171]

Answer:

The products  of self-ionization of water are OH⁻ and H⁺.

Explanation:

  • The water is self ionized according to the equation:

<em>H₂O → OH⁻ + H⁺. </em>

<em></em>

The ionic product for water (Kw) = [OH⁻][H⁺] = 10⁻¹⁴.

Kw is also called "self-ionization constant" or "auto-ionization constant".

6 0
3 years ago
CO2<br> +<br> NaOH<br> &lt;=&gt;<br> NaHCO3<br> Balance
NeTakaya

Answer:

Explanation:

It is balaned

Left side

1 Na

1 C

3 Os

1 H

=========

Right side

1 Na

1 H

1 C

3 Os

5 0
2 years ago
Read 2 more answers
Is a compound a metal or non metal
VARVARA [1.3K]

Answer:

Compounds between Nonmetals and Nonmetals

Compounds that consist of a nonmetal bonded to a nonmetal are commonly known as Molecular Compounds, where the element with the positive oxidation state is written first. In many cases, nonmetals form more than one binary compound, so prefixes are used to distinguish them.

3 0
3 years ago
Copper is malleable, ductile, and conducts heat and electricity. Would you classify copper as a metal, nonmetal, or metalloid? W
Morgarella [4.7K]

Answer:

The elements can be classified as metals, nonmetals, or metalloids. Metals are good conductors of heat and electricity, and are malleable (they can be ... and electricity, and are not malleable or ductile; many of the elemental nonmetals are ... under certain circumstances, several of them can be made to conduct electricity.

Hope this helps!

Explanation:

5 0
2 years ago
Read 2 more answers
What happens when The vapour obtained by dropping conc. H2SO4 in a mixture of KI and MnO2 is treated with hypo solution​
Shalnov [3]

Iodine is decolorized.

The first reaction stated in the question occurs as follows;

2 KI (aq) + 2 H2SO4 (aq) + MnO2 (s) → MnSO4 (aq) + K2SO4 (aq) + I2 (s) + 2 H2O (l)

The reaction here is the formation of iodine from MnO2 and KI in the presence of dropwise H2SO4.

Hypo is the common name of sodium thio-sulphate or sodium hypo-sulfite.

The equation of the titration reaction is;

2Na2S2O3 + I2→ Na2S4O6 + 2NaI

When this reaction takes place, iodine is decolorized due to its reduction to I^-.

6 0
2 years ago
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