Quem criou a teoria do átomo

What is rate a of reaction

Select all that apply. Which of the following are homogeneous solutions? sugar water air peanuts and water an unopened soft drink cement

Given that the mass of an electron is 5.486*10-4amu, and the mass of a proton is 1.007 amu, calculate how many times heavier a proton is than an electron

Which is not a reason that water is used to store spent fuel rods from nuclear power plants? Water increases the speed of the chain reaction in the fuel rods.

the compound diborane can be used as a rocket propellant. what is the percent composition of boron in diborane

Water has a specific heat of 4184 J / (kgK) how much energy is needed to increase the temperature os a kilogram of water 5C?

A student noticed while doing the neutralization experiment that the calorimeter kept getting warmer. how would this error affect the final calculation for the δhneut of each reaction? would it be overestimated, underestimated or remain unaffected?

A solution contains 45 grams of nitrogen gas and 40 grams of argon. What is the mole fraction of argon in this solution?

How is an animal cell related to tissue and organs

Predict the precipitate produced by mixing an Al (NO3) 3 solution. write the net ionic equation for the reaction. include the states of matter