In a hydrogen fuel cell, hydrogen gas and oxygen gas are combined to form water. write the balanced chemical equation describing this reaction (using lowest whole-number coefficients.

What are two differences of a theory and a hypothesis?

In the 1920s, Edwin looked at the spectra of stars from distant galaxies. To his surprise, he found that all of these spectra were red-shifted, and that the more distant the galaxy, the greater the red shift.

Which is the correct Lewis dot structure of NH2? H-N-H H-N-H A. B. N-H-H H-N-H c. D. •H-N-H. =. ОА. А OB. B Ос. с OD D OE. E

All of the following elements produce magnetic fields except for a. copper. b. nickel. c. cobalt. d. iron.

When the salinity of a seawater sample changes, the ratio of the major salt ions does not change?

Will mark as Brainliest. How much energy is released when 16.5 g of steam is condensed at 100 degrees Celsius? -37290 J -3729 J -136 J -136 kJ

What is the mole fraction, x, of solute and the molality for an aqueous solution that is 16.0 % NaOH by mass

What is the square root of 54554? What is the square root of 35654?

Halogens have ... Electron affinity

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?