Answer:
Since pH is a logarithmic scale, a difference of one pH unit is equivalent to a tenfold difference in hydrogen ion concentration. ... Pure water and a solution of NaCl in pure water are both neutral, since dissociation of water produces equal numbers of both ions.
Explanation:
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Answer:
A. the box accelerated to at 1.0 m/s² to the right because the net force is 17N to the right.
Explanation:
To solve this problem, we need to find the net force acting on the body;
Net force = Forward force - Backward force
Forward force = 35N
Backward force = 18N
Net force = 35N - 18N = 17N
So;
Net force = mass x acceleration
17 = 17 x acceleration
Acceleration = 1m/s²
Therefore, the body moves in the forward direction with an acceleration of 1m/s²
Answer:
star
Explanation:
stars are composed of 92.1 percent hydrogen and 7.8 percent helium.
