Find: 1% of 1 hour

Find the ratio of the following: (a) 30 minutes to 1.5 hours

A reaction completes 50% in 2 hours and 75% in 4 hours. What is the order of the reaction. Give reason.

In a laboratory,the count of bacteria in a certain experiment was increasing at the rate of 2.5% per hour.Find the bacteria at the end of 2 hours if the count was initially 5,06,000.

A first order reaction is 25% complete in one hour . At the end of two hours the extent of reaction is :

A radio active isotope has a half - life of 'T' years. How long will it take the activity to reduce to (a) 3.125% (b) 1% of the original value.

The half life period of a radioactive nucleide is 1 hour. In three hours its activity will be reduced by a factor of:

Consider an optical communication system operating at lambda ~ 800 nm . Suppose, only 1% of the optical source frequency is the available channel band-width for optical communication. Channels which can be accommodated for transmitting video TV signals requiring an approximate band-width of 4.5 MHz are

In a culture, the bacteria count is 1,00,000. The number is increased by 20% in 3 hours. In how many hours will the count reach 2,00,000, if the rate of growth of bacteria is proportional to the number present?