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Aloiza [94]
3 years ago
5

(Select all that apply)

Chemistry
2 answers:
aalyn [17]3 years ago
8 0

All the reactants listed in the Table of Oxidation Potentials are reducing agents and oxidized by the reaction.

vaieri [72.5K]3 years ago
6 0
Answer: 
Reducing agents 
Oxidized by the reaction 


Sorry for late response on the answer. 
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The following does NOT indicate that a chemical change may have taken place is fracture formation. A chemical change happens when the substance changes its physical state and composition resulting from a chemical reaction. This chemical reaction may either give off or absorb energy. A change in color is a chemical change. For example, litmus paper turns to red when placed in an acid solution. Production of gas is a chemical change. For example, adding hydrochloric acid to the tiles of the bathroom gives a hissing sound with gases given off. Formation of a precipitate is also a chemical change. Change in shape is not a chemical change.

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8 0
3 years ago
Which of these best explains why a paper clip can float on water?
Tems11 [23]
The water has surface tension
3 0
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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When two liquids are combined and form a solid (but didn't freeze) the solid that was formed is called
ludmilkaskok [199]
The answer is nucleation because can turn liquids into solids.
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