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
swat32
3 years ago
9

The precautions that must be taken when carrying out experiments with hydrogen​

Chemistry
1 answer:
vodka [1.7K]3 years ago
3 0

Answer:

Never smoke near a place where hydrogen is generated or being used. Remove all possible sources of flame and sparks. Hydrogen should only be generated and used in a well ventilated out door area. Precautions must be taken to remove all possibilities of fire or explosion.

You might be interested in
A helium filled ballon had a volume of 8.50 L on the ground at 20.0 C and a pressure of 750.0 Torr. After the ballon was release
Marrrta [24]

Answer:

V_2=12.1L

Explanation:

Hello!

In this case, according to the given data of volume, pressure and temperature, it is possible to infer this problem can be solved via the combined gas law:

\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}

Thus, regarding the question, we evidence we need V2, but first we make sure the temperatures are in Kelvins:

T_1=20+273=293K\\\\T_2=-40+273=233K

Then, we obtain:

V_2=\frac{P_1V_1T_2}{T_1P_2}\\\\V_2=\frac{0.987atm*8.50L*233K}{293K*0.550atm}\\\\V_2=12.1L

Best regards!

5 0
3 years ago
Concentration and ion moles are equal only when volume is what ?
siniylev [52]

Concentration and ion moles are equal only when volume is  1. Of 1.0 x 10-6 and 1.0 x 10-4, the larger number is 1.

3 0
3 years ago
When you turn on the heat in the car, heat is being transferred by (1 point)
OLEGan [10]
A. Radiation 

Air in a car is heated up with the radiator and then blown out with an air pump.
5 0
3 years ago
If there is a loss of 5.63 x 10-7kg of mass in a nuclear reaction, how many Joules of energy would be released? Recall that c =
Fudgin [204]
Thank you for posting your question here at brainly. 

E = mc^2 
<span>where E is the energy in joules, </span>
<span>m is the mass in kilograms, </span>
<span>and c is the speed of light. </span>

<span>E = mc^2 </span>
<span>E = (5.63 x 10^-7 kg)(3 x 10^8 m/s)^2 </span>
<span>E = 5.07 x 10^10 J </span>


5 0
3 years ago
You are given a clear-water solution containing potassium nitrate. How could you determine whether the solution is unsaturated,
igor_vitrenko [27]

Answer:

If it is unsaturated, we can dissolve some more amounts of potassium nitrate into it Explanation:

5 0
3 years ago
Other questions:
  • Which type of intermolecular attractive force operates between (part
    9·1 answer
  • A rocket can fly into space because ?
    13·1 answer
  • What is the speed of a jet plane that flies 78500 km in 10.5 hours (in km/hr)?
    9·1 answer
  • Check all the statements that describe applications and properties of substances that result from intermolecular forces.
    10·2 answers
  • -<br> What is the mass of the following particles:<br> o Protons<br> o Neutrons<br> o Electrons
    8·1 answer
  • What impact did the Spanish have on the region of South America?
    11·1 answer
  • Which two come together to form an ionic bond?
    8·1 answer
  • Why is the sun colder in winter?
    10·1 answer
  • Pls someone help me with this question pls
    8·2 answers
  • How many grams of KNO3 are required to prepare 0.250 L of 0.70 M solution?​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!