1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kirill115 [55]
3 years ago
15

A. 8.15 b. 8.13 c. 8.23 d. 8.135

Chemistry
2 answers:
snow_tiger [21]3 years ago
7 0

Answer:

The answer is a) 8.15

Explanation:

Hi, when going to inform a volume from a graduated test tube it's important to read the medition at the bottom point of the valley form by the liquid (by effect of the capillarity).

<u>If not, that will lead to wrong medition.</u>

Also, each line between the 9 and the 8 represents 0.1 ml, so the medition is higher than 8.1 and lower than 8.2.

Due to the human eye precision and the degree of graduation of the tube it's not correct to asume specific values such as 0.13 or 0.135, becuase you can never know.

In conclusion, if the medition falls between to lines, it's correct to inform the half point.

For example, between:

  • 8.1 and 8.2 → 8.15
  • 7.4 and 7.5 →7.45
  • 5.8 and 5.7 → 5.75

ahrayia [7]3 years ago
6 0

Answer:

the answer is c

Explanation:

You might be interested in
There are on average 43 g of sugar and 355 mL can of soda please calculate the molarity of sugar in the can of soda the molar ma
vfiekz [6]

Explanation:

Given :

Amount of solute - sucrose (C12H22O11) = 41 g

Amount of solvent -soda  = 355-mL

Molarity of the solution with respect to sucrose= ?

Molarity(M) is a unit of concentration measuring the number of moles of a solute per liter of solution. The SI unit of molarity is mol/L.

Formula to find the molarity of solution :

               Molarity =  

Amount of solvent is given in mL, let’s convert to L :

               1 L = 1000 mL

Therefore, 355 mL in L will be :

                   

               = 0.355 L

We have the amount of solute in g, let’s calculate the number of moles first :

       Number of moles (n) =  

Molar mass of C12H22O11 = 342.29 g/mol.

Therefore, n =  

               = 0.119 moles.

8 0
3 years ago
Order earths layers from highest temperature to lowest temperature .
Andreyy89
Inner Core, Outer Core, Lower Mantle, Upper Mantle, Crust.
5 0
3 years ago
Reactions cannot occur without a certain minimum amount of energy. what is this minimum amount of energy called?
Dovator [93]
This type of energy would be called reaction energy.
4 0
3 years ago
Read 2 more answers
What is occurring when reactants are mixed and heated and liquid collects in the sidearm of the apparatus
olga55 [171]

When reactants are mixed and heated and liquid collects in the sidearm of the apparatus, a chemical reaction is occurring.

<h3>What is a chemical reaction?</h3>

A chemical reaction is said to occur when reactants are combined to form products. We must note that the formation of products is evidenced by;

  • Appearance of a liquid
  • Appearance of a gas
  • Appearance of a solid

Hence,  when reactants are mixed and heated and liquid collects in the sidearm of the apparatus, a chemical reaction is occurring.

Learn more about chemical reaction:brainly.com/question/22817140

#SPJ1

4 0
2 years ago
How are chemical bonds important in metabolism?
mixas84 [53]
Chemical bonds are broken to supply us with energy. Without bonds, and our ability to break them, the food we eat would not supply us with energy.
8 0
4 years ago
Other questions:
  • Ammonia (NH3) burns in air to form nitrogen dioxide and water. Calculate grams of nitrogen dioxide produced if 4.0 grams of ammo
    14·1 answer
  • Help I need to show work!
    10·1 answer
  • Describe the position of our solar system in the Milky Way galaxy and the universe.
    7·1 answer
  • How many moles of methanol must be added to 4.50 kg of water to lower its freezing point to -10.0 ∘c? for each mole of solute, t
    11·1 answer
  • How do you find moles
    15·1 answer
  • What is the boiling point of a 0.321m aqueous solution of nacI
    5·2 answers
  • Tooth enamel is chemically known as
    8·1 answer
  • The second period at the bottom of the table is called
    5·1 answer
  • Mass-mass problem:
    7·1 answer
  • Choose a starting point in the water cycle and describe the process you would go through to move through the entire cycle.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!