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3 years ago

A scientist is trying to develop a more efficient way to recycle paper this type of chemistry is known as

Chemistry

1 answer:

iragen [17]3 years ago

7 0

Answer:

Green chemistry

Explanation:

Green chemistry is the design of chemical products and processes that reduce or eliminate the use or generation of hazardous substances. Green chemistry applies across the life cycle of a chemical product, including its design, manufacture, use, and ultimate disposal(EPA, 2017).

Green chemistry, also called sustainable chemistry, is an area of chemistry and chemical engineering focused on the design of products and processes that minimize or eliminate the use and generation of hazardous substances(wikipedia).

Thus, any research in chemistry geared towards waste reduction(such as more efficient methods of paper recycling) and recycling of other materials as well as placing less demands on the natural sources of materials is known as green chemistry or sustainable chemistry.

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What is the formula of Potential energy?

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PE =1/2mv^2

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Of the following, the particle generally not found in the nucleus of an atom is

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An electron. Electrons are found on the outer shells.

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4 years ago

List each type of organic macromolecule, it's function and a food source for that molecule.

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Answer:

Explanation:

carbohydrates.
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The densevapor iodinee heptafluoride reacts rapidly with water to give a mixture of periodic acid and hydrofluoric acid .

erma4kov [3.2K]

Explanation:

When iodine heptafluoride reacts rapidly with water to give a mixture of periodic acid and hydrofluoric acid. Reaction equation for the same is as follows.

$IF_{7} + 6H_{2}O \rightarrow H_{5}IO_{6} + 7HF$

As it is given that there are $3.72 \times 10^{-2}$ moles of iodine heptafluoride are present. Molar mass of $IF_{7}$ is 259.9 g/mol. Molar mass of $HIO_{4}$ is 227.94 g/mol and molar mass of HF is 20.01 g/mol.

Now, according to the reaction equation $3.72 \times 10^{-2}$ M $IF_{7}$ gives $3.72 \times 10^{-2}$ M $H_{5}IO_{6}$ .

Also, the volume is given as 795 ml or 0.795 L (as 1 mL = 0.001 L).

Hence, calculate the concentration of $H_{5}IO_{6}$ into the solution as follows.

Concentration = $\frac{\text{no. of moles}}{volume}$

= $\frac{3.72 \times 10^{-2}}{0.795 L}$

= $4.7 \times 10^{-2}$ mol/L

or, = 0.047 M

Now, as 1 mol of $IF_{7}$ produces 7 mol HF. So, $7 \times 3.72 \times 10^{-2} = 26.04 \times 10^{-2}$ M HF.

Therefore, concentration of HF will be calculated as follows.

Concentration of HF = $\frac{0.2604}{0.795}$

= 0.33 M

Thus, we can conclude that concentration of periodic acid is 0.047 M and concentration of hydrofluoric acid is 0.33 M.

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3 years ago

The specific heat capacity (c) of a substance is the thermal energy required

Ierofanga [76]

Temperature of the same cup of water will rise by 6 °C unless it boils.

<h3>Explanation</h3>

$Q = c\cdot m \cdot \Delta T$ .

However, neither $c$ nor $m$ is given.

Adding $Q = 125\;\text{kJ}$ to this cup of water of mass $m$ rises its temperature by $\Delta T = 1 \; \textdegree{}\text{C}$ .

In other words,

$\begin{array}{lll}Q &=& c \cdot m \cdot \Delta T\\125\;\text{kJ} &=& c \cdot m \times (1 \; \textdegree{}\text{C})\end{array}$

$c \cdot m = \dfrac{Q}{\Delta T} = \dfrac{125\; \text{kJ}}{1 \; \textdegree{}\text{C}}$ .

Both $c$ and $m$ are constant for the same cup of water unless the water boils. It's possible to reuse the value of $c \cdot m$ in the second calculation. Here's how:

$\Delta T = \dfrac{Q}{c\cdot m} = \dfrac{750 \; \text{kJ}}{\dfrac{125\;\text{kJ}}{1\;\textdegree{}\text{C}}} = \dfrac{750}{125} \; \textdegree{}\text{C}} = 6 \; \textdegree{}\text{C}}$ .

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3 years ago