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sergejj [24]
3 years ago
10

Help please! 1. L 2. M 3. X 4. Z

Chemistry
1 answer:
Mkey [24]3 years ago
5 0
1. L
Number one because the lines match up
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When preparing a TLC slide of a reference standard material (RSM), a solvent or mixture of solvents is used to dissolve the RSM
expeople1 [14]
<span>The better the RSM dissolves in the solvent, the higher the Rf (retention factor) will be, and the further the RSM will move. If the RSM is a polar compound, increasing the polarity of the solvent will increase the Rf of the RSM. If the RSM isn't a polar compound, an increasingly polar solvent will decrease the Rf.</span>
5 0
3 years ago
helium gas in a 2.00 L cylinder is under 1.12 atm pressure. At 36.5°C that same gas sample has a pressure of 2.56 atm. What was
Irina18 [472]

Answer:

T₁ = 135.41 K

Explanation:

Given data:

Initial pressure = 1.12 atm

Finial temperature = 36.5 °C (36.5 +273 = 309.5 K)

Initial temperature = ?

Final pressure = 2.56 atm

Formula:  

P₁/T₁ = P₂/T₂  

P₁ = Initial pressure

T₁ = Initial temperature

P₂ = Final pressure

T₂ = Final temperature

Solution:

P₁/T₁ = P₂/T₂  

T₁  = P₁T₂  /P₂

T₁ = 1.12 atm × 309.5 K / 2.56 atm

T₁ = 346.64 atm . K / 2.56 atm

T₁ = 135.41 K

5 0
3 years ago
How many ml of naoh are needed to neutralize 15.0 ml of 0.350m ch3cooh?
horsena [70]
I dont know im sorry
5 0
2 years ago
Directions: Read the paragraph and identify the correct words that fit in the given sentences
TiliK225 [7]

Answer:

1. Elements

2. one

3. properties

4. Chemical

5. metal

6. non-metal

7. metalloids

8. Compounds

9. one

10. more

11. components

12. chemical process

Explanation:

In the given paragraph a brief about the difference between element and compound is given.

Elements are made up of the same type of atoms and each element is made up of one atom, that is they cannot be broken down into any other substance. Each element is different from each other due to its properties, though some have the same physical properties but are different in chemical properties.  Elements can be classified as metals such as iron and silver, non-metals such as oxygen and hydrogen, and metalloids such as boron and silicon.

Compounds are a combination of one or more elements such as water and salt. Compounds can be easily broken down into components through a chemical process.

Hence, the correct answer is:

1. Elements

2. one

3. properties

4. Chemical

5. metal

6. non-metal

7. metalloids

8. Compounds

9. one

10. more

11. components

12. chemical process

8 0
2 years ago
What is the electron configuration for Fe?
blsea [12.9K]
The answer is C) [Ar]4s2 3d6
5 0
2 years ago
Read 2 more answers
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