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?

38 Find the length of the missing side:

If gravity between the Earth and the Moon suddenly vanished,  the Moon would continue moving in

The electronic configuration of a Argon atom is 2, 8, 8. What are the electron conjurations of H, Li, and Na. How are they similar? Why are they chemically highly reactive and readily form bonds with other elements?

If the price of bread decreases, ceteris paribus, the equilibrium price of butter will _______ and the equilibrium quantity will ______.

32 Of 200 thousand people in a city, 40% are considered overweight and 15% are considered obese. How many are overweight? How many are obese?

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

Consumers incomes have risen 25% from last year. Instant noodles are considered an inferior good. Ceteris paribus, the equilibrium price of instant noodles will _______ and the equilibrium quantity will ______.

A pair of charged particles attract each other with a force F when they are at a distance d apart. What would be the force between the particles when the distance between them is reduced to d/2?

HInt: this is now in terms of hours, not output.