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4 years ago

How is copper disposed of after use ?

Chemistry

1 answer:

AnnZ [28]4 years ago

7 0

It is recycled. Copper, like other metals it melted back down for farther use in other products and structures.

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On a caterpillar's map, all distances are marked in millimeters. The caterpillar's map shows that the distance between two milkw

pychu [463]

Answer:

0.004012km

Explanation:

Problem:

Conversion of millimeters(mm) to Kilometers:

value given = 4012mm

Here, we are converting from a submultiple unit to a multiple unit.

Millimeter depicts 10⁻³m and kilometer stands for 10³m

Now, we must find how many exponents will take us from 10⁻³ to 10³

careful examination shows that if we multiply a power of 10⁶ to 10⁻³ it will give a 10³:

i.e 10⁻³ x 10⁶ = 10⁻³⁺⁶ = 10³

Therefore,

10⁶mm = 1km

4,012mm = $\frac{4012}{1000000}$ = 0.004012km

4 0

3 years ago

Which element is used to paint the skin to pervent infection from cuts and scratches

gizmo_the_mogwai [7]

Iodine is the element

4 0

4 years ago

The equilibrium constant Kp for the reaction I2(g) + Br2(g) ⇀↽ 2 IBr(g) + 11.7 kJ is 280 at 150◦C. Suppose that a quantity of IB

mixas84 [53]

Answer:

$\large \boxed{\text{0.0120 atm }}$

Explanation:

The balanced equation is

I₂(g) + Br₂(g) ⇌ 2IBr(g)

Data:

Kp = 280

p(IBr) = 0.200 atm

1. Set up an ICE table.

Let p = the initial pressure of IBr. Then

$\begin{array}{ccccccc}\rm \text{I}_{2}& + & \text{Br}_{2} & \, \rightleftharpoons \, & \text{2IBr} & & \\0 & & 0 & & p & & \\+x & & +x & & -2x & &\\x & & x} & & 280 & & \\\end{array}$

2. Calculate p(I₂)

$\begin{array}{rcl}K_{\text{p}}&=&\dfrac{p_{\text{IBr}}^{2}} {p_{\text{I}_2}^{2}}\\\\280&=&{\dfrac{0.200^{2}}{x^{2}}&&\\\\280x^{2} & = &0.0400\\x^{2} & = &\dfrac{0.0400}{280 }\\\\& = & 1.429 \times 10^{-4}\\x & = & \textbf{0.0120 atm}\\\end{array}\\\text{The partial pressure of iodine is $\large \boxed{\textbf{0.0120 atm }}$}$ }

Check:

$\begin{array}{rcl}{\dfrac{0.200^{2}}{0.0120^{2}}}&=&280\\\\280& =& 280\\\end{array}$

8 0

3 years ago

8. What is the name of this compound?

olga2289 [7]

Answer:

tert-butyl bromide

Explanation:

sec-butyl bromide

CH3 -CH-CH2-CH3

tert-butyl bromide

CH3

CH3-C- Br

CH3

isopropyl bromide

CH3

CH3-CH-Br

isobutyl bromide

CH3

CH3-CH-CH2-Br

6 0

4 years ago

What is the balanced chemical equation for wood burning

creativ13 [48]

Answer:

P + O2 --> P2O5

Explanation:

For a simple match burning you can use the following equation: P + O2 --> P2O5 To balance the reaction you have to make sure you have the same amount of each element on both sides.

8 0

3 years ago