Answer:
c
Explanation:
1. litmus paper is used when showing a change between a greater range in ph levels - so A and D are automatically a no.
2. methyl red is used to show a range in ph levels between 4.8-6
3. Option C is the only one left so im going to assume its C because its definitely not A, B, or D
Answer:
This law states that the physical and chemical properties of the elements are the periodic function of their atomic masses. This means that when the elements are arranged in the order of their increasing atomic masses, the elements with similar properties recur at regular intervals.
Explanation:
Answer:
V=?
S=25m
t=2.5s
V=S/t
V=25/2.5
V=10m/s
So, the ball was traveling with the speed of 10m/s.
B) 1 Zn+ 2HCl--> 1 ZnCl2+1H2
This is balanced
