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Elis [28]
3 years ago
10

Which of the following is NOT an example of a chemical change? *

Chemistry
1 answer:
lord [1]3 years ago
4 0
Grinding as it’s a physical not chemical change :)
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What is the concept of Dimensional Analysis?
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In engineering and science, dimensional analysis is the analysis of the relationships between different physical quantities by identifying their base quantities (such as length, mass, time, and electric charge) and units of measure (such as miles vs. kilometers, or pounds vs. kilograms) and tracking these dimensions as

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What type of element is fluorine
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Put the elements in order from easiest to hardest to remove an electron. Ba,Be,Ca,Sr.
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Which of the following is an electrolyte?<br> Sugar<br> Nacl<br> Br2<br> Chicken soup
tankabanditka [31]
Nacl is an electrolyte
4 0
3 years ago
a balloon contains 30.0 L of helium gas at 103 kPA. what is the volume of the helium when the balloon rises to an altitude where
stiv31 [10]
Answer:
                V₂  =  123.6 L

Explanation:

According to Boyle's law pressure and volume of a gas are inversely related if amount and temperature are kept constant. For the initial and final states the gas law is given as,

                                                P₁ V₁  =  P₂ V₂     ----- (1)
Data Given;
                   P₁  =  103 kPa

                   V₁  =  30 L

                   P₂  =  25 kPa

                   V₂  =  ?

Solution:

Solving equation 1 for V₂,

                                        V₂  =  P₁ V₁ / P₂

Putting values,
                                        V₂  =  (103 kPa × 30 L) ÷ 25 kPa

                                        V₂  =  123.6 L

Result:
           As the pressure is decreased from 103 kPa to 25 kPa, therefore, volume has increased from 30 L to 123.6 L.
8 0
3 years ago
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