<em><u>because if any metals are there in the flour it would attract it...</u></em>
<em><u>hope it helps you</u></em>
<em><u>and mark as best answer please</u></em>
A pH of 7 is known as "natural"
A pH below 7 is an acid
A pH above 7 is a base
Acids give up hydrogen ions, shown as H+
Bases accept H+, hydrogen ions.
Equilibrium is when a chemical reaction doesn't favor the reactants or products and can go in reverse.
pH of 7 are related to Equilibrium.
With the info I have given you, it's obviously not one of the last 2 you listed.
pH measures the alkalinity and acidity of a solution by the Hydrogen ions, H+. Therefore, the solution has to have Hydrogen ions to react/be measured by the pH paper.
Therefore, your answer is the 2nd statement.
The solution has equal amounts of hydronium ions and hydroxide ions.
Answer:
A) The wave that travels through the rail reaches the microphone first.
B) separation in time between the arrivals of the two pulses is 0.01539 seconds.
Explanation:
Detailed explanation and calculation is shown in the image below
The answer I believe is c
Explanation
During the day when temperatures are higher, the snow melts and water enters the cracks in the rock. When the temperature drops below 0°C the water in the crack freezes and expands by about 9 per cent. This makes the crack larger.
