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PilotLPTM [1.2K]
4 years ago
14

What rules must be obeyed to safely conduct an experiment

Chemistry
1 answer:
sukhopar [10]4 years ago
7 0

Answer:

In order to safely conduct an experiment, laboratory safety rules must be obeyed.

Explanation:

In order to safely conduct an experiment, laboratory safety rules must be obeyed. The laboratory safety rules are outlined to ensure that the experiment is safe, the safety of people and the environment. The laboratory safety rules are, but not limited to:

1. Dress appropriately for the experiment.

2. Use the necessary personal protective equipment such as gloves and goggles.

3. Do not touch chemicals with bare hands or taste chemicals.

4. Know the specific locations of the fire extinguishers and other safety equipment.

5. Avoid eating and drinking in the laboratory.

6. Dispose laboratory wastes in their appropriate waste bins.

There are other safety rules which depend mostly on the types of experiment, chemicals/materials, and operating conditions for the experiment.

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How much heat is required to take a 150 g sample of water from 10.0 ℃ to 95.0 ℃? cs,water = 4.184 J/g*℃
Setler79 [48]

Answer:

\boxed {\boxed {\sf 53, 346 \ Joules}}

Explanation:

We are given the specific heat and change in temperature, so we should use this heat formula:

q=m C \Delta T

where m is the mass, C is the specific heat capacity, and ΔT is the change in temperature.

We know the mass is 150 grams. The specific heat of water is 4.184 J/g °C.

Let's find the change in temperature.

Subtract the initial temperature from the final temperature.

  • ΔT= final temp - initial temp
  • final= 95.0 °C and  initial= 10.0 °C
  • ΔT= 95.0 °C - 10.0 °C= 85.0 °C

Now we know all the values:

m= 150 \ g \\C= 4.184 J/ g \  \textdegree C \\\Delta T= 85.0 \textdegree C

Substitute them into the formula.

q=(150 \ g) (4.184 \ J/g \ \textdegree C)(85.0 \textdegree C )

Multiply all three numbers together. Note that the grams (g) and degrees Celsius (°C) will cancel out. Joules (J) will be the only remaining unit.

q=(627.6 \ J/ \textdegree C) ( 85.0 \textdegree C)

q=53346 \ J

<u>53,346 Joules</u> of heat are required.

4 0
3 years ago
Which of the following refers to a situation in which the use of harmful gas emissions is balanced by the replenishing of renewa
nignag [31]

Answer:

carbon neutral

Explanation:

Carbon neutral is a term which signifies the implementation of policies by organizations, governments, businesses e.t.c to remove as much carbon from the environment as they add to it.

Carbon dioxide is one of the harmful gases produced during the combustion of fossil fuels. It's anomalous concentration in the earth's atmosphere can lead to devastating effects on our planets. To reduce the daily release of this greenhouse gas, an alternate use of renewable energy sources would provide a better solution towards our reliance on internal combustion engines that release carbon dioxide into the atmosphere. For example, solar farms can produce clean and renewable energy that would not release any carbon dioxide in the atmosphere.

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3 years ago
What is Gibbs free energy
Alenkinab [10]

Answer:

The minimum amount of energy needed the the cell to perform various cellular,biochemical and physiological activities is known is Gibbs free energy.

Explanation:

The change in gibbs free energy of is very much important to determine whether a given reaction is spontaneous,non spontaneous  or equilibrium.

 1 If gibbs free energy change of a reaction is negative then the reaction is spontaneous.

2  If the free energy change is 0 then the reaction is in equilibrium stage.

3  If free energy change is positive then the reaction is non spontaneous.

4 0
3 years ago
126785033% Divided by 348675948849 = <br> what does it equal
meriva

Answer:

0.00000363618

could be wrong.

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How did we measure the production of oxygen in photosynthesis in this experiment Mosa Mack lesson 2
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If the discs floated, they produced oxygen and gained buoyancy.

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