What is the number of electrons in the outermost energy level of an oxygen atom

Sheela wants to make a computer model of a land ecosystem. Part of her model simulates the chemical processes of photosynthesis that involve the creation of sugars. Which of these chemical processes are these? A. the light-dependent reactions B.

25.0 ml of a 6.0 m stock solution is diluted using water to 100 ml. How many moles of are present in the dilute solution? 6.0 moles 0.6 moles 0.15 moles 1.5 moles

If a rock initially contained 10 milligrams of a radioactive substance when it first formed, how much remains after 4 half-lives?

An object exerts force of 500 n and sits on an area of 4.5m X 1.5m. Calculate the amount of pressure exerted by the object in torr.

If a centiliter is one hundredth of a liter (0.01 L), how many centiliters are there in one liter?

Observe: Change the Surface area from Minimum to Maximum. You can imagine that a solid reactant has been dissolved in a liquid. How does this change how many Reactant B molecules are exposed to Reactant A?

When placed in a 200-mL square box, a substance has a spherical shape and has a volume of 75 mL When placed in a 200-mL circular tube, the same amount of that same substance has a spherical shape and a 75-mL volume.

What is the example to the word camouflage

Given the reaction 2NaOH + H2SO4 = Na2SO4 + 2H2O, what is the total number of grams of NaOH needed to react completely with 196 grams of H2SO4

The mass flow rate of gasoline leaving a refinery is 1610 kg/min. The specific gravity of a gasoline is 0.700. A retail gasoline pump is able to fill a 20.0 gallon automobile tank in 1.80 minutes.