1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natima [27]
2 years ago
13

Why is Potassium not used in school laboratory

Chemistry
2 answers:
Colt1911 [192]2 years ago
8 0

Answer:

Explanation:

Potassium and cold water are not used to prepare hydrogen in laboratory because: 1. Potassium is highly reactive metal and it reacts violently with cold water. 2.

densk [106]2 years ago
6 0
<h3>Because it is harmful for school environment.</h3>

Potassium Metal Is Explosive— Do Not Use It! The reaction of sodium with water is a spectacular and essential classroom demonstration. Many teachers want to show also the more violent reaction of potassium. We propose not to do so because explosions can happen even before the metal is in contact with water.

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>

You might be interested in
Concentration of 10.00 mL of HBr if it takes 5 mL of a 0.253 M LiOH solution to<br> neutralize it?
Sonbull [250]
In a titration, for an acid to neutralize a base, at the equivalence point, there should be an equal number of moles of H+ and OH-.

Moles of OH- can be found by multiplying the concentration of the base by the volume. (You will need to keep in mind the stoichimetric coefficients if the strong base is Ca(OH)₂, Ba(OH)₂, or Sr(OH)₂.

Moles of OH- = moles of H+
(0.253 M) * 0.005 L = 0.01000 L * c
c = 0.1265 M

The concentration of HBr is 0.127 M.
3 0
3 years ago
I’m confused on this what do I do??
Artist 52 [7]

Answer:

yes

Explanation:

5 0
2 years ago
Read 2 more answers
Imagine a large compass extending out from center of the earth it set messured 90° One point touches the equator where does the
alexandr402 [8]
The exact opposite end of the earth or 180degrees
6 0
3 years ago
50 ml of 0.2 M acetic acid is shaken with 10 g activated charcoal. The concentration of acetic acid is reduced to 0.5 times the
Olegator [25]

Answer:

0.03 g_{acid}/g_{charcoal}

Explanation:

The amount adsorbed (solute) is the acetic acid, and the adsorbent is the activated charcoal. The mass of the adsorbent is 10 g.

So, we need to calculate the mass of the acetic acid as follows:

m = n*M = C*V*M

Where:

n: is the number of moles = C*V

M: is the molecular mass =  60.052 g/mol

C: is the final concentration of the acid = 0.5*0.2 mol/L = 0.10 mol/L

V: is the volume = 50 ml = 0.050 L

m_{acid} = C*V*M = 0.10 mol/L*0.050 L*60.052 g/mol = 0.30 g

Now, the amount of solute adsorbed per gram of the adsorbent is:

\frac{m_{acid}}{m_{charcoal}} = \frac{0.30 g}{10 g} = 0.03 g_{acid}/g_{charcoal}

Therefore, the amount of solute adsorbed per gram of the adsorbent is 0.03 g/g.

I hope it helps you!

3 0
2 years ago
Can someone make me a periodic table with color?
lilavasa [31]

Answer:

The periodic table is also split into four blocks: s = red, p = green, d = yellow, and f = blue.

4 0
2 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP ME<br><br> what would be the mass of 9.03 x 1021 molecules of hydrobromic acid (HBr)?
    6·1 answer
  • When an electric field is applied to a metallic crystal, the movement of electrons is?
    14·1 answer
  • The
    14·1 answer
  • Balance the following reaction:
    13·2 answers
  • The mobility and carrier density of Al are 12 cm2/Vs and 1.98×1023 cm−3 , respectively. The mobility and carrier density of Cu a
    10·1 answer
  • From the following data, calculate the average bond enthalpy for the NOH bond: NH3(g) ¡NH2(g) 1 H(g) ¢H° 5 435 kJ/mol NH2(g) ¡NH
    7·1 answer
  • How many grams of tris (mw 121.1) would you need to prepare 100 ml of a 100 mm tris solution? _________ grams?
    7·1 answer
  • Which of the following molecules has one lone pair of electrons?
    5·2 answers
  • In your video respond to the following question/promt. Make sure you state a clear claim and explain with
    10·2 answers
  • Swimming pool structures and structural _____ [680.26(B)(1) and (B)(2)] shall not be used as a grounding electrode.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!