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pashok25 [27]
3 years ago
5

Match the type of nuclear reaction to the picture that represents it. Note that each blue circle represents the nucleus of an at

om. A. Fusion B. Fission
Chemistry
2 answers:
lyudmila [28]3 years ago
8 0

it D cause I looked it up


Ivahew [28]3 years ago
6 0
WHERE'S THE PICTURE?????
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What is the half-life of a pharmaceutical if the initial dose is 500 mg and only 31 mg remains after 6 hours?
Sergeu [11.5K]

Answer:

\large \boxed{\text{b. 1.5 h}}

Explanation:

1. Calculate the rate constant

The integrated rate law for first order decay is

\ln \left (\dfrac{A_{0}}{A_{t}}\right ) = kt

where

A₀ and A_t are the amounts at t = 0 and t

k is the rate constant

\begin{array}{rcl}\ln \left (\dfrac{500}{31}\right) & = & k \times 6\\\\\ln 16.1 & = & 6k\\2.78& =& 6k\\k & = & \dfrac{2.78}{6}\\\\& = & 0.463 \text{ h}^{-1}\\\end{array}

2. Calculate the half-life

t_{\frac{1}{2}} = \dfrac{\ln2}{k} = \dfrac{\ln2}{\text{0.463  h}^{-1}} = \textbf{1.5 h}\\\\ \text{The half-life is $\large \boxed{\textbf{1.5 h}}$}

4 0
3 years ago
A vehicle is moving with a velocity of 20 m/s.how far does it moves in one hrs
Airida [17]
Distance= Speed x Time

1hr=60mins

60mins=3600 secs

20 x 3600=72000

72000 is your answer.

5 0
3 years ago
Convert 100 ml to L can you help mee??
Vladimir79 [104]

Answer:

0.1  L

Explanation:

divide the volume value by 1000

6 0
3 years ago
Read 2 more answers
Which of the following molecules have the weakest attraction to each other?<br> F2<br> Cl2<br> Br2
bija089 [108]

Answer:

Explanation:

F2 have the weakest attraction to each other because of higher electronegativity when they are brought close to each other they repel each other

5 0
3 years ago
2. What effect does adding a neutron have on the atom’s mass?
anyanavicka [17]
It does<span>, however, change the </span>mass<span> of the nucleus. </span>Adding<span> or removing </span>neutrons<span>from the nucleus are how isotopes are created. Protons carry a positive electrical charge and they alone determine the charge of the nucleus.</span>
7 0
2 years ago
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