How do you complete a chart when it says weight of a 250 pound astronaut

Select the one that most likely has the highest rate of effusion Oxygen (O2) or hydrogen (H2) :

If you made up a solution of NaOH by adding 0.010 mole of solid NaOH to 1.0 liter of distilled water, what would be the concentration of the OH - (aq) ?

True or False. Osmosis is the net movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.

A drought has affected an ecosystem. Many plants have died due to lack of water. What do you think will happen ti the other organisms in the area?

I am finding the formula of a compound that has 60% Carbon, 32% Oxygen, and 8% Hydrogen. Although, when it comes to actually creating the formula I end up with a subscript of 2.5 for C, 1 for O, and 4 for H.

You would know you were in the troposphere If? It were raining on you You were floating in space You were flying in a high altitude jet You were in the ozone later

A burning match is an example of a chemical change phase change nuclear change physical change

The table below shows the shapes of two samples, C and D, when placed in three containers of different shapes.

How many grams of KCl are produced when 60 grams of K are reacted?

Whats a solution! people