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ipn [44]
3 years ago
14

Use the average acceleration obtained in Activity 1 to determine how far the ball should drop at 0.3 second, 0.5 second, and 0.7

second. Using the simplified formula y = 1/2 at2 (because y0 = 0 and v0 = 0), calculate y to one decimal place.
Chemistry
1 answer:
Vedmedyk [2.9K]3 years ago
8 0

Answer:

0.3 sec : -0.4 m

0.5 sec: -1.2 m

0.7 sec: -2.3 m

Explanation:

0.3 sec: 1/2(-9.3 m/s^2)(0.3 s)^2 = -0.4 m

0.5 sec: 1/2(-9.3 m/s^2)(0.5 s)^2 = -1.2 m

0.7 sec: 1/2(-9.3 m/s^2)(0.7 s)^2 = -2.3 m

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Answer:you should search on google

Explanation:

because its useful

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Which refers to the measure of the amount of water vapor in the air?
il63 [147K]

Answer:

humidity

Explanation:

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4 years ago
What is the volume of 0.150 M sodium hydroxide, required to react completely with 250.0 mL of 0.545 M acetic acid, CH3COOH solut
katrin [286]

Answer:

68.81ml

Explanation:

Using the formula:

CaVa = CbVb

Where;

Ca = concentration of acid (M)

Cb = concentration of base (M)

Va = volume of acid (ml)

Vb = volume of base (ml)

Based on the information given in this question;

Ca = 0.545M

Cb = 0.150M

Va = 250ml

Vb = ?

Using CaVa = CbVb

0.545/250 = 0.150/Vb

Cross multiply

250 × 0.150 = 0.545Vb

37.5 = 0.545Vb

Vb = 37.5/0.545

Vb = 68.81ml

7 0
3 years ago
5. Common (most stable) mass numbers of the following elements are Al-27, Pt-195, Co-59,
ankoles [38]

Answer:

Number of neutrons of Al²⁷₁₃ = 14

Number of neutrons of Pt¹⁹⁵₇₈= 117

Number of neutrons of Co⁵⁹₂₇= 32

Number of neutrons of Ag¹⁰⁸₄₇= 61

Number of neutrons of Au¹⁹⁷₇₉ = 118

Explanation:

We know that atomic number of an atom is number of electron or protons while atomic mass is sum o number of neutrons and and protons.

Shorthand notations of given elements:

Al²⁷₁₃

This notation shows that atomic number of Al-27 is 13 and atomic mass is 27.

Number of neutrons of Al²⁷₁₃  = 27 - 13

Number of neutrons of Al²⁷₁₃ = 14

Pt¹⁹⁵₇₈

This notation shows that atomic number of Pt-195 is 78 and atomic mass is 195.

Number of neutrons of Pt¹⁹⁵₇₈  = 195 - 78

Number of neutrons of Pt¹⁹⁵₇₈= 117

Co⁵⁹₂₇

This notation shows that atomic number of Co-59 is 27 and atomic mass is 59.

Number of neutrons of Co⁵⁹₂₇  = 59 - 27

Number of neutrons of Co⁵⁹₂₇= 32

Ag¹⁰⁸₄₇

This notation shows that atomic number of Ag-108 is 47 and atomic mass is 108.

Number of neutrons of Ag¹⁰⁸₄₇  = 108 - 47

Number of neutrons of Ag¹⁰⁸₄₇= 61

Au¹⁹⁷₇₉

This notation shows that atomic number of Au-197 is 79 and atomic mass is 197.

Number of neutrons of Au¹⁹⁷₇₉  = 197 - 79

Number of neutrons of Au¹⁹⁷₇₉ = 118

7 0
3 years ago
Hydrocarbons that contain a double or triple bond between carbons are considered unsaturated because
ipn [44]

Answer:

alkenes and alkynes are considered as unsaturated hydrocarbons because they are capable of reacting with hydrogen in the presence of a catalyst to form a saturated hydrocarbon (alkanes)

Explanation:

A saturated compound contains a chain of carbon atoms joined by single bonds, with hydrogen atoms attached to each carbon atom.  

Propane for example, CH₃-CH₂-CH₃.  

It is saturated because all the carbon atoms holds maximum number of hydrogen atoms.  

Alkenes such as Propene (CH₂=CH-CH₃) and alkynes like Propyne,

(CH₃-C≡C-H) are unsaturated because the central carbon atoms contain less number of hydrogen atoms than they possibly could.

8 0
3 years ago
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