Answer:
ch4 + 2o2 gives co2+2h2o +891kj
Explanation:
becoz 891kj heat energy is given out
exothermic process means heat energy is given out/ released
Answer
A reactant is a substance that is present at the start of a chemical reaction. These are what breakdown to form products and its always to the right.
A product is a substance that is present at the end of a chemical reaction. These are what are formed after the reactants are broken down, the end result.
Answer:
violet
Explanation:
Violet light is electromagnetic radiation with wavelengths of 410 nanometers and red light has a wavelength of 680 nanometers.
Answer:
980.6
Explanation:
No explanation fo this uestion
