Answer:
...BY CHOOSING A PROPER INDICATOR, SCIENTISTS CAN MINIMIZE THE DIFFERENCE IN THESE TWO NUMBERS,...
Explanation:
A chemical indicator is an agent or substance which gives a visible sign especially a color change when introduced to a solution of base indicating the threshold of the concentration of acid used in the titration procedure. These indicators include methyl orange, methyl red, phenolpthalein. They give a color change when the concentration of an acid as reached a critical limit in order for the reaction to be stopped. These indicators are involved in acid-base titrations, oxidation- reduction reactions and so on. More accurate results of the volume of the required acid or base is obtained by the introduction of these indicators.
Answer:
d = 2.27 cm3
Explanation:
m = 125 g
V = 55 cm3
m = V × d
=> d = m/V = 125/55 = 2.27 g/cm3
Thermal instillation works so to me the smartest answer is a cotton sweater to keep heat in
Answer:
1) Yes
2) No
Explanation:
A strip of solid magnesium metal is put into a beaker of 0.053M ZnSO4 solution-YES
A chemical reaction occurs
Mg(s) + ZnSO4(aq) ----------> MgSO4(aq) +Zn(s)
This reaction is possible because magnesium is far higher than zinc in the activity series of metals hence magnesium can displace zinc from a solution of a zinc salt.
A strip of solid zinc metal is put into a beaker of 0.058M MgBr2 solution. NO
A chemical reaction does not occur because magnesium is higher than zinc in the activity series hence zinc cannot displace magnesium from a solution of its salt.
No. There are stronger and more powerful nuclear weapons, but nothing is stronger than a nuclear weapon.
