TODAY'S FIRST QUESTION:
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LIKE CHEMISTRY
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MYQUESTION
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◉◈✿｡ [♛ ItzDisha♛] ｡✿◈◉
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✍️Explain how antacid works.
✍️ Write the chemical formula of hydrated copper sulphate and anhydrous copper sulphate. Giving an activity illustrate how these are inter convertible.
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By Disha130285.........
Answers
Answer:
Antacids are neutralizing, absorbing agents taken to relieve heartburn or indigestion caused by excess stomach acid. They typically contain salts of magnesium, aluminum, calcium and sodium. Antacids work by raising the gastric pH and are also used to provide symptomatic relief from peptic ulcers
(a) Hydrated copper sulphate- CuSO4 .5H2OAnhydrous copper sulphate- CuSO4
Activity :
(i) Take a few crystals of CuSO4 . 5H2O in a test tube and heat it.
(ii) Then add 2-3 drops of water on the sample of copper sulphate obtained after heating. After heating, water is removed and salt turns white. If crystals are moisten again with water, blue colour reappear
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Explanation:
Question:−
The radius of curvature of a spherical mirror is 20 cm what is its focal length?
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Answer:−
Radius of curvature, R= 20 cm.
Radius of curvature of a spherical mirror:-
=>2 — Focal length (f)
R= 2f
f= R/2
=> 20 / 2 = 10
Hence, the focal length of the given spherical mirror is 10 cm.
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