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Evgesh-ka [11]
2 years ago
6

Can someone answer these two separate questions pls ill give brainliest

Chemistry
1 answer:
Tems11 [23]2 years ago
8 0

The average speed

3. 89.7 m/min

4. 6.13 ft/min

<h3>Further explanation</h3>

Given

3. 1076 m in 12 min

4. 92 ft in 15 min

Required

average speed

Solution

3.

<em>I am solving for</em> : the average speed

<em>The equation I need is :</em>

\tt avg~speed=\dfrac{total~distance}{total~time}

<em>This is how I set the equation</em>

<em />\tt avg~speed=\dfrac{1076~m}{12~min}<em />

<em>This is my answer</em> = 89.7 m/min

4.

<em>I am solving for</em> : the average speed

<em>The equation I need is :</em>

\tt avg~speed=\dfrac{total~distance}{total~time}

<em>This is how I set the equation</em>

<em />\tt avg~speed=\dfrac{92~ft}{15~min}<em />

<em>This is my answer</em> = 6.13 ft/min

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The group of unsaturated hydrocarbons which 2 carbons are double bonded together, with H bonded to the left, and C H 2 bonded below left, above right, and below right is derived from <u>Alkenes</u>

<h3>What are organic compounds?</h3>

Organic compounds are compounds which contains carbon and hydrogen

Some few classes or organic compounds or hydrocarbons are as follows:

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So therefore, the group of unsaturated hydrocarbons which 2 carbons are double bonded together, with H bonded to the left, and C H 2 bonded below left, above right, and below right is derived from <u>Alkenes</u>

Learn more about organic compounds:

brainly.com/question/1594044

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An object can become electrically charged if it gains or loses which particles?
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5. How much heat is evolved when 24.9 g of propanol (C3H7OH) is burned? ΔHcomb = −2010 kJ/mol
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What mass of Ca(NO3)2 must be dissolved in 726.0 g of water to prepare a 0.200 m solution? Use molar masses with at least as man
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The answer to your question is 22.4 g of Ca(NO₃)₂

Explanation:

Data

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Process

In Chemistry, there are two main units of concentration Molarity (M) and Molality (m). In this problem concentration is "m" then I will calculate molality.

1) Formula

   molality = moles / mass of solvent

2.- Solve for moles

   moles = molality x mass of solvent

-Substitution

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-Simplification

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Molar mass of Ca(NO₃)₂ = 40 + (14 x 2) + (6 x 16)

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                                       = 154 g

              154 g of Ca(NO₃)₂ ---------------- 1 mol

                 x                          ---------------- 0.1452 moles

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