M1V1=M2V2
V2=750-150=600 ml
0.75M*750 ml = M2*600
M2=0.75*750/600 ≈ 9.38 M
Sand and water can be separated by any of the following methods:
1. Sedimentation and decantation: This method involves the mixture being kept undisturbed for some time. After some time, sand being heavier and insoluble in water, settles down at the bottom of container. Now, water is poured into another container to separate it from sand.
2. Filtration: This method involves the mixture being passed through a filter paper (a filter with very fine pores). Sand particles being larger in size are retained by the filter paper and get separated from water.
I hope this helps! :D
<h3>
Question #1:</h3>
False.
Melting is a type of chemical change.
<h3>Question #2:</h3>
True.
If the substance's atoms change in any way, it is a chemical change.
<h3>Question #3:</h3>
True.
If a substance is broken or torn, it's still the same substance. (Take tearing paper, for example)
<h3>Question #4:</h3>
False.
Take boiling water for example, when you boil water, it is still water, right?
<h3>Question #5:</h3>
False.
<em><u>Every</u></em> chemical or physical change in matter includes change in energy. <u><em>Not most.</em></u>
<h3>
Question #6</h3>
True.
Hydrogen peroxide (H2O2), has turned into water (H2O) and oxygen (O). The substance has change chemically, therefore it is an chemical change.
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I hoped this helps! If you have any questions, feel free to ask! ^^
