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madreJ [45]
3 years ago
11

A desert that contains plants and animals that have been there a long time is an example of

Chemistry
1 answer:
mixas84 [53]3 years ago
7 0
Pioneer Community would that be?
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Which of the following units would be the most appropriate for measuring the mass of a grain of rice? A. milligrams B. grams C.
Temka [501]
A, milligrams because rice is very small therefore you'd need to use a very small unit of measurement.
8 0
3 years ago
Read 2 more answers
NEED SOME CHEM HELP
zloy xaker [14]
Hello!

The substances, ordered according to their dissolving time in water, are the following

Sugar Cubes > Granulated Sugar > Powdered Sugar

The difference between these substances is the degree of order. According to collision theory, for a substance to be dissolved, successful collisions between solvent molecules and solute molecules need to happen. as molecules are more ordered, successful collisions are less likely to happen, because atoms are fixed into a crystalline structure.

When the molecule is less ordered, successful collisions are more likely to occur, as the atoms can be impacted from different sides and aren't fixed into a given position. 

As the degree of order increases, the dissolving time in water will be higher too, as more time would be required for successful collisions to happen. The most ordered substance is sugar cubes, followed by granulated sugar and powdered sugar, and that order is the same as the order for dissolving time. 

Have a nice day!

7 0
4 years ago
A student needs to standardize a base solution by titration with an acid solution of known concentration. She finds the volume o
kondor19780726 [428]

The steps usually involves adding the known solution (the titrant) to a known quantity of the unknown solution (the analyte) until the reaction is complete which can be understood in detail as below with the help of through out process of titration.

<h3 /><h3>What is Titration ?</h3>

A titration is a technique used to work out the concentration of an unknown solution based on its chemical reaction with a solution of known concentration.

Steps in order to determine the concenteration of base solution ;  

(Acid-Base Titration)

  • Choose the titrant.
  • Choose the titrate.
  • Select the normality of the titrate.
  • Choose the volume of the liquid to be pipetted out.
  • Select the indicator.
  • Start titration.
  • End point is noted at the colour change of the solution.
  • From the final reading the normality of titrant can be calculated by the equation:

                                          ​N₁V₁=N₂V₂

  • After finding the normality, the amount of given substance in the whole of the given solution can be calculated by the equation:

          ​Mass = Equivalent weight  x  Normality \  Volume  {1000}

Learn more about titration here ;

brainly.com/question/15365870

#SPJ1

6 0
3 years ago
Does this make a reaction? Because both products are soluble.
Crank

Answer:

Yes.

Explanation:

It will react. Because they are compounds

3 0
3 years ago
The periodic table is arranged by _______.
Goryan [66]

Answer: The atomic number

4 0
3 years ago
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