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AleksAgata [21]
3 years ago
12

Taken all together the reactions of the human body are

Chemistry
1 answer:
jasenka [17]3 years ago
8 0
The reactions of the human body are exothermic
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1.) Why does carbon form covalent bonds?
juin [17]

For #1, I'd say it's "It will usually bond to multiple atoms which can provide a total of 4 additional electrons."

2. Ionic (I'm quite certain because anions/cations (-1 & +1) are Ionic from what I recall, if that's true it's Ionic.
3. "comparison of the associated families to which the elements belong" and
"the difference in electronegativities" are what I would choose, as I mentioned in a comment earlier.

If I'm wrong let me know, but I am at least 80% sure that these responses are correct from what I remember in Chemistry.

7 0
3 years ago
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Please fill this formula​
Maurinko [17]
1.) Na
2.) Cl ( at the second blank)
sodium metal+hydrochloric acid
3 0
2 years ago
Please answer this correctly,,, This is a huge part of my grade. And who ever answers correctly will get brainliest!
chubhunter [2.5K]

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I belive it's the black chair because they were asking which chair experienced the most force in the begining and the black chair had the most force given.

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3 years ago
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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 $\large \boxed{\textbf{1.5 h}}$}

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3 years ago
1. Burning coal and oil in a power plant produces pollutants, such as sulfur dioxide, SO2. This compound can be removed by the f
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