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2 years ago

Why are lab rules important

Chemistry

2 answers:

valentina_108 [34]2 years ago

6 0

Answer:

Because you can die if you dont be safe my guy.

If you dont

be safe in a lab it can be very dangerus and some times even deadly.

Tyler is gay

tino4ka555 [31]2 years ago

6 0

Answer:

if we do not have lab rules then something could go wrong like we could die or like what happened right now CORONAVIRUS that is why lab rules are so important to prevent things like this from happening

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Please Hurry this is already overdue

Troyanec [42]

Answer:

According to the chart, the period and string length are not the same. Regardless of string length. The chart says that "period = seconds 10"

Explanation:

So for example in Trial 1. The period equaled 8.7, so in turn you would times 8.7 by 10 and get 87. Which is not equal to the string length. For they are also measured in two different measurements.

7 0

3 years ago

The vapor pressure of dichloromethane, c h 2 c l 2 , at 0 ∘ c is 134 mmhg . the normal boiling point of dichloromethane is 40. ∘

sladkih [1.3K]

the vapor pressure of the liquid at a temperature T2 ... Now, it's important to realize that the normal boiling point of a substance is measured at an atmoshperic ... ΔHvap=−ln(134mmHg760mmHg )⋅8.314J mol−1K−1 (1(273.15+0)−1(273.15+40))K−1 ... Give equations that can be used tocalculate the .

Now try it yourself :)

8 0

3 years ago

Express the following numbers as decimals: (a) 1.52 x 10^-2, (b) 7.78 x 10^-8, (c) 1 x 10^-6, (d) 1.6001 x 10^3.

Alchen [17]

Answer :

(a) 0.0152

(b) 0.0000000778

(c) 0.000001

(d) 1600.1

Explanation :

Scientific notation : It is the representation of expressing the numbers that are too big or too small and are represented in the decimal form with one digit before the decimal point times 10 raise to the power.

For example :

5000 is written as $5.0\times 10^3$

889.9 is written as $8.899\times 10^{-2}$

In this examples, 5000 and 889.9 are written in the standard notation and $5.0\times 10^3$ and $8.899\times 10^{-2}$ are written in the scientific notation.

(a) $1.52\times 10^{-2}$

The standard notation is, 0.0152

(b) $7.78\times 10^{-8}$

The standard notation is, 0.0000000778

(c) $1\times 10^{-6}$

The standard notation is, 0.000001

(d) $1.6001\times 10^{3}$

The standard notation is, 1600.1

5 0

3 years ago

PLEASE HELP!!!

neonofarm [45]

Answer:

$Cl_2+2NaI\rightarrow I_2+2NaCl$

Explanation:

Hello there!

In this case, according to the described chemical reaction, Cl2 replaces iodine in NaI in order to produce I2 and NaCl:

$Cl_2+NaI\rightarrow I_2+NaCl$

It is possible to realize how chlorine replaces iodine in agreement with the single displacement reaction. Moreover, since chlorine and iodine atoms are not correctly balanced, we add a 2 in front of both NaI and NaCl in order to do so:

$Cl_2+2NaI\rightarrow I_2+2NaCl$

Best regards!

8 0

2 years ago

Select whether the statement is for Speed, Velocity, or Acceleration.

Vesna [10]

Answer:

I think that the statement is relative to speed because it is saying km per second.

4 0

3 years ago