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dybincka [34]
3 years ago
12

Which of the following is true about the differences between the "Plum Pudding" model and Rutherford's model? There are two poss

ible answers.
A. Both models describe food.

B. The plum pudding model had no deflection of particles because it lacked a nucleus

C. Rutherford's model showed deflection of particles because the nucleus has positive and neutral particles.

D. The plum pudding model and Rutherford's model are the same
Chemistry
1 answer:
Ugo [173]3 years ago
7 0
I think it is the letter A because they both Make sense
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Answer:

The correct option is: c. petroleum jelly, d. Polyethylene glycol 4000/600 mixture                

Explanation:

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An ointment base medication gets rapidly absorbed into the skin. Some of the examples of <u>ointment bases</u> include water-soluble bases: <u>polyethylene glycol</u>, hydrocarbon bases: <u>petroleum jelly</u>, paraffin wax.

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Which type of equipment would be used to precisely measure 26.0 mL of dilute hydrochloric acid?
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At its critical point, ammonia has a density of 0.235 g cm23. You have a special thick­walled glass tube that has a 10.0­mm outs
salantis [7]

Answer:

\large \boxed{\text{69.3 mg}}

Explanation:

1. Volume of sealed tube

Assume the sealed tube is a right circular cylinder in which the cap and the base are also 4.20 mm thick.

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Its inside dimensions are

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V = πr²h = π(0.8)²× 146.6 mm³ = 294.8 mm³ = 0.2948 cm³

2. Calculate the mass of NH₃

\begin{array}{rcl}\text{Density} & = & \dfrac{\text{Mass}}{\text{Volume}}\\\\\rho & = &\dfrac{m}{V}\\\\0.235 \text{ g$\cdot$ cm}^{-3} & = & \dfrac{m}{\text{0.2948 cm}^{3}}\\\\m & = & \text{0.0693 g}\\& = & \textbf{69.3 mg}\\\end{array}\\\text{You must seal $\large \boxed{\textbf{69.3 mg}}$ of ammonia in the tube.}

4 0
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goldfiish [28.3K]

Answer:

D

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