Chemistry, 09.05.2021 18:10 cesarcastellan9
Pls help me identify which of these substance are a physical change or a chemical change .
BAKING A CAKE
SETTING OFF A FIREWORK
BOILING WATER
BAKING BREAD DISSOLVING SUGAR IN TEA
MAKING WINE FROM GRAPES AND YEAST
MAKING CONCRETE FROM SAND CEMENT AND WATER
Answers: 3
Chemistry, 22.06.2019 00:00
What stress will shift the following equilibrium system to the left? n2(g) + 3h2(g) ⇌ 2nh3(g) adding more n2(g) adding more nh3(g) increasing the pressure of the system reducing the volume of the container
Answers: 1
Chemistry, 22.06.2019 20:30
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
Chemistry, 22.06.2019 22:30
Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility
Answers: 1
Pls help me identify which of these substance are a physical change or a chemical change .
BAKING...
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