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natka813 [3]
3 years ago
7

What are different things you need to know before performing a experiment ?

Chemistry
2 answers:
ANTONII [103]3 years ago
5 0
Before starting an experiment. ...
Wear the right kind of clothing and gear. ...
Be aware of safety equipment and where it's located. ...
Fill out your lab form as you conduct your experiment. ...
Complete your lab report as soon as possible after the lab.
Katarina [22]3 years ago
3 0
You should always know what you’re working with so you can have the proper safety gear such as goggles, gloves, lab coat, etc.
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What do all the elements in one row of the periodic table have in common?
Hoochie [10]

Answer:

B

Explanation:

This is because the periodic table is designed this way.

5 0
3 years ago
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Calculates the equivalent mass of calcium chlorate CA (CI03) 2
love history [14]

Answer:

207g

Explanation:

Given compound:

            Ca(ClO₃)₂

The equivalent mass can be derived by summing the molar masses of each atom

  Molar mass of Ca = 40

                            Cl  = 35.5

                            O  = 16

Now solve;

 Molar mass  = 40 + 2(35.5 + 3(16)) = 207g

3 0
2 years ago
In which of the following is most of the water on earth held?
Blizzard [7]
The most water on earth is held by the oceans . 
4 0
3 years ago
How many moles of hydrogen are in 3. 06 × 10⁻³ g of glycine , c₂h₅no₂?.
Gala2k [10]

Answer:

n = 6.06 x 10^{-4} mol

Explanation:

n =?

m = 3.06 x 10-³ g

M (H5) = 5 x 1.01 (Since we only want hydrogen)

Atomic mass of C = 12.01

Atomic mass of H is 1,01, etc.

Having this data, we can use the Molar mass formula and change it so we can know the quantity of matter (n) in moles, and we just replace it.

M = \frac{m}{n} ⇔ n = \frac{m}{M} ⇔ n = \frac{3.06 x 10^{-3} }{5,05} ⇔ n = 6.06 x 10^{-4} mol

Note: The numbers I've used may be different from yours, by a small difference. I don't know if it's the case, but hope it helped.

8 0
2 years ago
4 . suppose you are setting up a reaction that requires an iodide salt and are planning to use sodium iodide. however, at the la
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You will need to weight out less
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