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Aleksandr [31]
3 years ago
12

What do these two changes have in common?

Chemistry
1 answer:
Xelga [282]3 years ago
4 0
They are both changing how they look, feel, and they have a chemical change because you can’t fix decomposing wood or rust without breaking it physically.
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Julli [10]
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3 0
3 years ago
Calculate the mass of sucrose needed to prepare a 2000 grams of 2.5% sucrose solution.
meriva

Answer:

50 g Sucrose

Explanation:

Step 1: Given data

  • Mass of solution: 2000 g
  • Concentration of the solution: 2.5%

Step 2: Calculate the mass of sucrose needed to prepare the solution

The concentration of the solution is 2.5%, that is, there are 2.5 g of sucrose (solute) every 100 g of solution. The mass of sucrose needed to prepare 2000 g of solution is:

2000 g Solution × 2.5 g Sucrose/100 g Solution = 50 g Sucrose

5 0
2 years ago
Which of the following elements is the smallest?
Oliga [24]

Answer:

Explanation:

The atomic radius of elements are used to estimate the sizes of elements. The atomic radius is taken as half of the inter-nuclear distance between two covalently bonded atoms of non-metallic elements or half of the distance between two nuclei in the solid state of metals.

To solve this problem we will obtain the atomic radius values of the given elements from a standard atomic radius table;

          Si          111 pm

           P          98 pm

          Cl          79 pm

            S           87pm

pm = picometer

We see that chlorine has the least atomic radius

7 0
3 years ago
Read 2 more answers
Convert 5.0 x 1027 r.p. of copper to moles of copper.
PtichkaEL [24]
Convert 5.0 to 1027 an you should get your answer
3 0
3 years ago
The Arrhenius theory explains how the concentration of H
koban [17]

Answer:true

Explanation:

7 0
1 year ago
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