Anhydrous sodium carbonate is stable to heat and does not decompose even when it is heated to redness. This is because sodium carbonate salt on heating with acids react to release carbon dioxide.

5 0

2 years ago

What kind of reaction is AgNO3+KI —> AgI+KNO3?

Scilla [17]

Answer:

Substitution reaction

5 0

3 years ago

If a sample of radioactive isotopes takes 60 minutes to decay from 200 grams to 50 grams, what is the half-life of the isotope

qaws [65]

Answer:

I HOPE IT WILL BE YOUR ANSWER:

Explanation:

As given

60 min = 50 gm (1)

then we know half-life mean half amount decay time

so we can write as the half of 200 is 100 gm hence

T 1/2 = 100 (2)

solving these two equation by cross multiplication we will get

T 1/2 = 120 min

THANKS FOR ASKING QUESTION

6 0

3 years ago