subject
Chemistry, 30.01.2020 13:51 rileyeddins1010

Which is proof that in any synthesis reaction, a chemical change has occurred?

in a synthesis reaction, two reactants combine to form a new compound.

many synthesis reactions involve a phase change.

in a synthesis reaction, oxygen is always converted to carbon dioxide.

all synthesis reactions are exothermic.

ansver
Answers: 3

Other questions on the subject: Chemistry

image
Chemistry, 21.06.2019 20:50, karlyisaunicorn
Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread
Answers: 2
image
Chemistry, 21.06.2019 21:50, kyleighmarie05
H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?
Answers: 3
image
Chemistry, 22.06.2019 17:10, hahahwha
Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]
Answers: 2
image
Chemistry, 22.06.2019 20:00, 20calzoy
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
You know the right answer?
Which is proof that in any synthesis reaction, a chemical change has occurred?

in a syn...

Questions in other subjects: