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Fish don’t live very long in water that has just been boiled and brought back to room temperature. Why?

A beam of light entering from air into water at an angle bent

Acceleration is defined as the time rate of change of velocity. Thus it is give by:a=vf-vit A car initially running at 10 m/s is accelerated at 1.2 m/s2 in 1.2 second time. What is the final speed of the car? [You are expected to show a detailed calculation including the formula used not just a final answer.] 

Hydrogen, H, is a nonmetallic gas and the first element in the periodic table. Why is hydrogen placed on the far left column along the metals, rather than being placed adjacent to the gases on the far right columns?

You are provided a 0.9 M NaCl solution and asked to dilute it to 0.7 M solution. If you want to get 200 ml of the 0.7 M solution, how much 0.9 M solution and how much water do you need to add?

07 Add:

Genetic variability is generated in sexual reproduction as a result of the following processes, except __________ .

10 Simplify:

13 Solve:

Cell division by meiosis results in ___________ .