A campfire is an example of

A. a fusion reaction.

B. an exothermic reaction.

C. a spontaneous reaction.

D. an endothermic reaction.

Arrange the following Elements from greatest to least tendency to accept an electron.? Rank from greatest to least tendency to accept an electron. To rank items as equivalent, overlap them. Sr, Sn, Rb, Te, I

If a sample of gas is intially at 1.8 atm, 22.0 l, and 26.4 c, what will be the volume if the pressure is reduced by 0.8 atm and the temperature is lowered to 20.3 c?

Determine the mass of co2 produced by burning enough carbon (in the form of charcoal) to produce 450 kj of heat. c (s) + o2 (g) ? co2 (g) ? h? rxn=?393.5kj

Be sure to answer all parts. an empty erlenmeyer flask weighs 254.0 g. when filled with water (d = 1.00 g/cm3), the flask and its contents weigh 406.9 g. (a) what is the volume of water in the flask? enter your answer in scientific notation.

Which statement is true? Private companies never hire scientists. Scientist cannot work in places like Antarctica. All scientists work in the field. Society can influence science.

Where do most carbon monoxide emissions come from?

The osmotic pressure exerted by a solution is equal to the molarity multiplied by the absolute temperature and the gas constant RSuppose the osmotic pressure of a certain solution is measured to be 22. atm at an absolute temperature of 353.

Which one of the following is a redox reaction?. 2 Na (g) + Cl2 (g) 2 NaCl (s) A. K2Cr2O7 (aq) + 2 KOH (aq) 2 K2CrO4 (aq) + H2O (l) B. H2O (l) H + (aq) + OH - (aq) C. Na2CO3 (s) + 2 HCl (aq) 2 NaCl (aq) + CO2 (g) + H2O (l) D.

Name 4 common chemical properties of matter

Why is photosynthesis so important to plants, and can't animals use it?