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Sergio [31]
2 years ago
15

Do Alkali Metal Compounds form precipitates? And Why?

Chemistry
1 answer:
Alexeev081 [22]2 years ago
6 0

Answer:

Alkali metal hydroxides can be used to test the identity of metals in certain salts. The colour of the precipitate will help identify the metal : Calcium hydroxide is soluble; no precipitate is formed.

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Zootopia movie: Why is Judy Hopps placement at the police academy so unusual?
kondaur [170]

Answer:

down below

Explanation:

Judy Hopps was one of the smaller prey animal while the others were predators or bigger prey animals. Meaning, she was tiny and in some minds, was easier to take down or may not be able to do the job as well as the bigger animals. Also, she was, less noticeably, the only female prey animal.

8 0
2 years ago
Is Isoheptenes hazardous when wet
Dmitry_Shevchenko [17]

Answer:

yes it is dangerous

Explanation:

Water reactive substances are dangerous when wet because they undergo a chemical reaction with water.

3 0
3 years ago
Read 2 more answers
Some chemical reactions can proceed in just one direction . True or False ?
ss7ja [257]
The answer is False. i think
4 0
3 years ago
Read 2 more answers
When the following oxidation-reduction occurs, what is the balanced reduction half-reaction after the electrons in both half rea
Lostsunrise [7]

Answer :  The balanced reduction half-reaction is:

3Cu^{2+}+6e^-\rightarrow 3Cu

Explanation :

Redox reaction or Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.

Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases. Or we can say that in oxidation, the loss of electrons takes place.

Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases. Or we can say that in reduction, the gain of electrons takes place.

The given balanced redox reaction is :

Al(s)+Cu^{2+}(aq)\rightarrow Al^{3+}(aq)+Cu(s)

The half oxidation-reduction reactions are:

Oxidation reaction : Al\rightarrow Al^{3+}+3e^-

Reduction reaction : Cu^{2+}+2e^-\rightarrow Cu

In order to balance the electrons, we multiply the oxidation reaction by 2 and reduction reaction by 3 and then added both equation, we get the balanced redox reaction.

Oxidation reaction : 2Al\rightarrow 2Al^{3+}+6e^-

Reduction reaction : 3Cu^{2+}+6e^-\rightarrow 3Cu

The balanced redox reaction will be:

2Al(s)+3Cu^{2+}(aq)\rightarrow 2Al^{3+}(aq)+3Cu(s)

Thus, the balanced reduction half-reaction is:

3Cu^{2+}+6e^-\rightarrow 3Cu

6 0
3 years ago
dimensional analysis: a room measures 775 cm x 1400 cm x 260 cm. the density of oxygen is .001429 g/cm^3. how many kilograms of
Pani-rosa [81]

The  number  in Kg  of oxygen that  are present  in the room is  

403.1209  kg


<em><u>calculation</u></em>

mass=density x volume

density = 0.001429 g/  cm³

volume  =775 cm x 1400 cm x 260  cm =2.821 x10^8 cm³


mass  =0.001429 g/cm³  x( 2.8 x 10^8 cm³) =403120.9 grams


convert  g to Kg

that is  1 kg  = 1000 g

             ? kg    =403120.9 g

by cross   multiplication

=[(403120.9  g  x 1 kg) /1000 g]  =403.1209 kg

4 0
3 years ago
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