Answer:
A
Explanation:
It is correct please I hope it helps! :)
A substance and a solution have both uniform composition throughout. A substance is a matter that is uniform in composition and can be an element or compound. A solution is another name for homogeneous which is a mixture. The difference of substances and solution, a substance has a definite composition and a solution has a variable composition. It is also uniform in composition, but a solution is made by combining two or more substances.
Initial volume (without silver): 25.0 mL
final volume (with silver): 54.8 mL
1 mL = 1 cm3 (you can just change the units and the numbers will be the same)
volume of silver piece:
54.8 cm3 - 25.0 cm3 = 29.8 cm3
By the following above the compounds would contain a total of seven carbon atom: c. 2-heptene
hept is 7, heptene contain seven carbon atom.
hope this help
7.5 × 10¹⁹ Electrons flow through a point in a wire in 3.00 s if there is a constant current of i=4.00a.
Q = I × t------------Equation 1
Where Q = charge flowing through the wire, I = current, t = time
Given: I = 4.00 A, t = 3.00 s
Substitute these values into equation 1
Q = 4.00× 3.00
Q = 12.00 C.
But,
1 electron contains 1.6×10⁻¹⁹ C
therefore,
12.00 C = 12.00/1.6×10⁻¹⁹ electrons
= 7.5 × 10¹⁹ Electrons
To learn more about flow of electrons: brainly.com/question/14805255
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