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Angelina_Jolie [31]
3 years ago
11

jeffrey is on his skateboard and starts skating down a ramp. ten seconds later he is traveling at 20.0m/s calculate the accelera

tion
Chemistry
1 answer:
Grace [21]3 years ago
7 0
Velocity/time= acceleration
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Suppose that a 1.0-L reaction vessel initially contains 1.0 mol of O3 and 1.0 mol of O2. What fraction of the O3 will have react
NemiM [27]

Answer:

Explanation:

given reaction

                        2O₃        ⇄      3O₂

 initial                1                      1

    final           1-x                   1+ 1.5x

rate of reaction = k  [ O₃ ]² / [ O₂ ]

initial rate = k . 1² / 1 = k

final rate = k (1-x )² / (1+ 1.5x) = k/2

(1-x )² / (1+ 1.5x) = 1/2

2x² - 5.5 x + 1 = 0

x = 0.196

So fraction of ozone reacted = .196

8 0
3 years ago
How many moles are 7 grams of calcium oxide? (Atomic mass of Calcium - 40 u, oxygen-16 u)​
White raven [17]

Answer:

0.125

Explanation:

no of moles = given mass / molar mass

no of moles = 7/

molar mass of calcium oxide = atomic mass of calcium + oxygen

molar mass = 40 + 16

molar mass = 56

no of moles = 7/ 56 = 1/8 = 0.125

8 0
3 years ago
What is the independent variable when testing to see how the viscosity of a liquid affects its flow rate
DedPeter [7]

Answer:

Viscosity

Explanation:

The viscosity of the liquid is the independent variable. The flow rate is the dependent variable in this hypothesis.

The statement given is called the hypothesis. It is a form of scientific guess into a phenomenon.

  • An independent variable is the cause.
  • A dependent variable is the effect produced.
  • In this hypothesis, the cause of the various flow rate of the liquid is the viscosity.
  • It is therefore the independent variable.
  • The flow rate is the dependent variable.
3 0
3 years ago
What is the literal meaning of the images in the poem "Song of the Son"?
mihalych1998 [28]

Answer:

im on the same thing on usa test prep lol i need help too

Explanation:

5 0
4 years ago
Read 2 more answers
What are 2 ways a mixture defers from a compound
grin007 [14]
Well a mixture is less permanent and also it can be easily taken aprt where a compound does the opposite of those things. 

Hope I helped :)
6 0
3 years ago
Read 2 more answers
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