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4 years ago

Draw a transition state for the reaction between ethyl iodide and sodium acetate

Chemistry

1 answer:

SCORPION-xisa [38]4 years ago

6 0

Transition state <span> for the reaction between ethyl iodide and sodium acetateis shown below </span>

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How much energy would it take to heat a section of the copper tubing that weighs about 665.0 g, from 15.71 ∘C to 27.09 ∘C ? Copp

Margarita [4]

Answer:

2914 J

Explanation:

Step 1: Given data

Mass of the copper tubing (m): 665.0 g

Initial temperature: 15.71 °C

Final temperature: 27.09 °C

Specific heat of copper (c): 0.3850 J/g.°C

Step 2: Calculate the temperature change

ΔT = 27.09 °C - 15.71 °C = 11.38 °C

Step 3: Calculate the energy required (Q)

We will use the following expression.

Q = c × m × ΔT

Q = 0.3850 J/g.°C × 665.0 g × 11.38 °C

Q = 2914 J

3 0

3 years ago

Regular treatment with low dose aspirin is used to help prevent cardiovascular disease. How many aspirin molecules are in

gogolik [260]

The number of molecules of aspirin is $4.01\times 10^{20} molecules$

Given:

120. mg of the aspirin

To find:

The molecules of aspirin in 120. mg of aspirin.

Solution

Mass of aspirin = 120. mg

$1mg = 0.001 g\\\\120. mg=120.\times 0.001 g=0.120 g$

Molar mass of aspirin = 180.158 g/mol

Moles of aspirin = $= \frac{0.120 g}{180.158 g/mol}=0.000666 mol$

According to the mole concept:

$1 mole = N_A=6.022\times 10^{23} atoms/molecule/ions$

The molecules of aspirin in 0.000666 moles of aspirin:

$=0.000666\times 6.022\times 10^{23} molecules\\\\=4.01\times 10^{20} molecules$

The number of molecules of aspirin is $4.01\times 10^{20} molecules$ .

Learn more about the mole concept here:

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2 years ago

What is 9,865 km expressed in scientific notation?

algol13

It's 9.865 * 10^3 . The first number has to be between 1 and 10, and then multiply the number by ten, so it's 9.865 times 10 to the power of 3.

3 0

4 years ago

Read 2 more answers

How many atom in protons

Alex Ar [27]

Answer:

Its atomic number is 14 and its atomic mass is 28. The most common isotope of uranium has 92 protons and 146 neutrons. Its atomic number is 92 and its atomic mass is 238 (92 + 146).

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3 years ago

PLEASEE ANSWER ):

Lisa [10]

Answer:

Explanation:

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3 years ago