Can someone do a science test for me

What happens as the activation energy increases

A fuel has 30.43% nitrogen and 69.57% oxygen. Find the molecular formula of the compound if it has a mass of 92 grams per mole A. NO B. N2O4 C. NO2 D. N4O8

Which tool has the greatest degree of precision? a beaker with markings every 50 mL a flask with markings every 25 mL a graduated cylinder with markings every 1 mL a pipette with markings every 0.1 mL

What unit is most similar to light years

What evidence do scientists use to explain how the solar system formed? A) All the planets were a result of solar flares from the sun. B) All the planets are made of the same material, mainly helium.

You find a little bit (0.150g) of a chemical marked Tri-Nitro-Toluene. Upon complete combustion in oxygen, you collect 0.204 g of CO2 and 0.030 g H2O (we'll assume that these are the products, along with nitrogen).

What is radius? When might you need to measure an object's radius?

What happens to the sun's energy when it hits clouds, ice, and snow? It is mostly reflected. O It is all absorbed. It dissipates. It transfers heat by conduction.

Generally, as you go from left to right on the periodic table, what happens to: A) Atomic radius? B) First ionization energy? C) Electronegativity?

A student calculated the percent by mass of water in a hydrate as 14.2%. A hydrate is a compound that contains water as part of its crystal structure. If the accepted value is 14.7%, the student's percent error was