Chemistry, 24.01.2022 22:51 watervliet2586
1. Which form of energy changes in chemical reactions due to bonds breaking and forming? (1 point)
activation
potential
thermal
kinetic
2. What does it mean for a reaction to release energy? (1 point)
The relative potential energy of the reaction is positive.
The relative potential energy of the reaction is negative.
The activation energy of the reaction is positive.
The activation energy of the reaction is negative.
3. Heat is added to a chemical system. Which energy will increase? (1 point)
the relative potential energy of the system
the potential energy of the products
the activation energy of the system
the kinetic energy of the reactant molecules
4. Carbon monoxide and nitrogen monoxide react to produce carbon dioxide and nitrogen gas. If the system contains platinum, then less energy is required for the reaction to occur. Which term best describes the role of platinum in the system? (1 point)
reactant
energy
product
catalyst
5. The two oxygen atoms in a molecule of oxygen gas share their outer electrons. Which type of bond do the oxygen atoms form? (1 point)
ionic
exothermic
endothermic
covalent
Answers: 2
Chemistry, 22.06.2019 05:30, alexusnicole817
Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change
Answers: 2
Chemistry, 22.06.2019 20:30, huangjianhe135
The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?
Answers: 3
1. Which form of energy changes in chemical reactions due to bonds breaking and forming? (1 point)...
Mathematics, 29.10.2020 20:50
Mathematics, 29.10.2020 20:50
Physics, 29.10.2020 20:50
Mathematics, 29.10.2020 20:50