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MrMuchimi
3 years ago
10

What is the little “bump” of energy that is shown at the beginning of the reaction...the energy required to start the reaction

Chemistry
1 answer:
Darya [45]3 years ago
8 0
Activation energy?? The energy needed to start a chemical reaction is called activation energy
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Which reaction below represents a balanced, double replacement chemical reaction?
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Which has greater kinetic energy: a bullet that has a mass of 0.05kg travelling at 2,500m/s, or a lorry that has a mass of 4,500
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Which block of elements do the halogens belong to?<br> a. p block<br> c. d block<br> b. s block?
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3 years ago
An excess of oxygen reacts with 451.4 g of lead, forming 374.7 g of lead(II) oxide. Calculate the percent yield of the reaction.
Stels [109]

Answer: The percent yield of the reaction is 77.0 %

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2Pb+O_2\rightarrow 2PbO

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According to stoichiometry:

2 moles of Pb produces = 2 moles of PbO_2

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3 0
3 years ago
1. Which variable is the independent variable and which is the dependent variable? Density vs. ethylene glycol
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<span>1. Which variable is the independent variable and which is the dependent variable? Density vs. ethylene glycol
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Density = 58.0091 - 32.6341 / .025 = 1015 g/L

B. What is the molarity of the ethylene glycol solution, if the mass of ethylene glycol in the solution is 12.0439 g?

Molarity = 12.0439 ( 1 mol / 62.07 g) / 0.025 = 7.8 M</span>
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3 years ago
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