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nata0808 [166]
4 years ago
11

I'LL GIVE U BRAINLIEST

Chemistry
2 answers:
Arturiano [62]4 years ago
8 0
A, b, c, d, e, f, all of them should be checked
zysi [14]4 years ago
4 0

Answer : The correct options are, (a), (c), (d) and (f).

Explanation :

There are some safety rules for science lab when we are performing the experiments :

  • Always wear the lab coat to protect you from chemicals.
  • Always wear the gloves in your hands.
  • Always wear the face mask to protect you from the pungent smell of chemicals.
  • Always wear the glasses to protect the eyes.
  • Before doing some experiment wash all the materials with distilled water.

There are some safety rules for science lab in case of a laboratory accident:

  • Always stay calm at that time.
  • Do not try to clean up a spill.
  • Always follow the directions of the teacher.
  • Leave the area immediately.

Hence, the correct options are, (a), (c), (d) and (f).

You might be interested in
Why does it take so much heat and pressure to create helium and other elements?
ehidna [41]

Answer:

To break down the nucleus of an atom

Explanation:

Remember to change from one element to another, is necessary to add protons, neutrons and electrons,in most of the cases.

The take an electron from an atom you need certain energy, but they are in the outside part of the atom so is not as much energy as the one is necessary to take one neutron or proton from the inside part of an atom.

In this way, is a must to have a combination of pressure and heat to destabilize an atom and take some of this subatomic particles.

4 0
3 years ago
Which diagram shows electrons violating the Pauli exclusion principle?
Neporo4naja [7]
Correct Answer: Option C

Reason:
<span>The </span>Pauli Exclusion Principle<span> states as '<em>in an atom or molecule, no two electrons can have the same four electronic quantum numbers. Further, an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.</em>'
</span>
Thus, it can be seen that in option C, electrons in last 2 subshell have electrons with same spin, which is a violation of Pauli Exclusion Principle .
7 0
3 years ago
3. How much power is required to pull a sled if you use<br>60j of work in secound?<br>​
JulijaS [17]

Answer:

The answer is 60W

Power = Work done/ time

time = 1 second

Work done = 60J

Power = 60/1

= 60W

Hope this helps.

3 0
3 years ago
A porpoise sends out an ultrasonic burst and hears the echo off his favorite food in 0.13 seconds. How far away is the food sour
aalyn [17]

Answer:

The porpoise would hear its echo first because sound travels faster in water than in air. The bat would hear its echo first because the amplitude of sound waves ...

Explanation:

5 0
3 years ago
TIME REMAINING 52:03 Considering the activity series given below for metals and nonmetals, which reaction will occur?
Luden [163]

Answer:

2NaBr + I2 Right arrow. 2NaI + Br2

2AgNO3 + Ni Right arrow. Ni(NO3)2 + 2Ag

Explanation:

The activity or electrochemical series is an arrangement of elements according to their order

of reactivity.

If we look at the reactions, one thing that we must note is that the reactions that can occur are those in which an element that is higher in the series displaces another element that is lower in the series.

Br is higher in the electrochemical series than I so it can displace it. Ni is higher than Ag in the electrochemical series hence it can displace it.

7 0
3 years ago
Read 2 more answers
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