Question

cah2 প্লাস hno3 রিকোয়েস্ট 203 হলদিয়া এস প্লাস h2s ব্যালেন্স শীট​

Answer 1

Explanation:

An electroscope is an early scientific instrument used to detect the presence of electric charge on a body. It detects charge by the movement of a test object due to the Coulomb electrostatic force on it. The amount of charge on an object is proportional to its voltage. 

Answer 2

Answer:

CaH2 + 2HNO3 ----> 2H2 +Ca(NO3)2.

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