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4 years ago

What is the median number of seeds that germinate at 24*C

Chemistry

2 answers:

zhuklara [117]4 years ago

7 0

Answer:

Answer

Explanation:

telo118 [61]4 years ago

3 0

Answer:

80. Sorry if I am wrong.

Explanation:

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What type of compound is created when potassium and chlorine combine explain how they combine and write the chemical formula. Ne

Elodia [21]

Answer : Ionic compound is created when potassium and chlorine combine. The chemical formula of the compound is KCl.

Explanation :

When potassium and chlorine combine then the type of compound created is Ionic compound.

Ionic compound : These are those compounds which are made of a metal element and non-metal element. Salts are ionic compound which consists of a positive and negative ions.

The electronic configuration of Potassium is,

$1s^22s^22p^63s^23p^64s^1$

The electronic configuration of Chlorine is,

$1s^22s^22p^63s^23p^5$

From this we conclude that the potassium atom is a metal which has 1 electron in their valence shell and chlorine atom is a non-metal which has 7 electrons in their valence shell. For the complete octet, chlorine atom needs only 1 electron which it receives from the potassium atom.

During this process, potassium atom will loses 1 electron and acquire positive charge and chlorine atom will gain 1 electron from potassium atom and acquire negative charge.

$K^++Cl^-\rightarrow KCl$

The chemical formula of the compound is KCl.

5 0

3 years ago

Can someone please help mee finish this?

zvonat [6]

Answer:

1.Physical. People measure water by themselves.

2.Physical. People chop wood.

Explanation:

(this is all I can answer for you. you have to explain it by yourself tho.)

I dont know if I'm correct so you should double check.

4 0

4 years ago

Balance the following redox reaction in basic solution. Cl â’ (aq) + MnO â’ 4 (aq) â†’ Cl 2 (g) + MnO 2 (s)

FinnZ [79.3K]

$6\; \text{Cl}^{-} \; (aq) + 2\; \text{MnO}_4^{-} \; (aq) + 4 \; \text{H}_2 \text{O} \; (l) \to 3\; \text{Cl}_2 \; (g) + 2\; \text{MnO}_2 \; (s) + 8\; \text{OH}^{-} \; (aq)$

<h3>Explanation</h3>

The oxidation state of the manganese atom $\text{Mn}$ changes from +7 as in $\text{MnO}_4^{-}$ to +4 as in $\text{MnO}_2$ .
There are one $\text{Mn}$ atom in each $\text{MnO}_4$ ion.
Reducing each $\text{MnO}_4^{-}$ ion would thus consume three electrons.

Similarly, the oxidation state of the chlorine atom $\text{Cl}$ changes from -1 as in $\text{Cl}^{-}$ to 0 as in $\text{Cl}_2$ .
It takes two $\text{Cl}^{-}$ ions to produce one $\text{Cl}_2$ molecule.
Oxidizing every two $\text{Cl}^{-}$ would thus produce one $\text{Cl}_2$ while releasing two electrons.

Three $\text{Cl}_2$ molecules contain six chlorine atoms. Three $\text{Cl}_2$ would thus correspond to six $\text{Cl}^{-}$ ions.

Combining six $\text{Cl}^{-}$ , two $\text{MnO}_4^{-}$ ions, three $\text{Cl}_2$ ions, and two $\text{MnO}_2$ would balance the changes in oxidation state.

$6\; \text{Cl}^{-} \; (aq) + 2\; \text{MnO}_4^{-} \; (aq) \to 3\; \text{Cl}_2 \; (g) + 2\; \text{MnO}_2 \; (s)$ (NOT BALANCED)

Still, the product side lacks four oxygen atoms.

In an acidic environment, oxygen atoms would combine with protons to produce water.
In a basic environment (like this one,) there are nearly no protons for oxygen atoms to combine with. Oxygen atoms will likely combine with water to produce hydroxide ions.

Each oxygen atom combine with a water molecule to produce two hydroxide ions. Adding four water molecules and eight hydroxide ions would balance the equation.

5 0

3 years ago

Please answer this question for meeeeeeeeeee pleeeeeeeeeease!

Anettt [7]

Answer:battery in a flashlight so A

Explanation:

6 0

3 years ago

WILL MARK BRAINLIEST! ANSWER QUICKLY!!!!

Hitman42 [59]

Hey there!

Density = 2.75 g/cm³

Volume = 8 cm³

Mass = ?

Therefore:

Mass = Density * volume

Mass = 2.75 * 8

Mass = 22 g

5 0

3 years ago

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