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Mama L [17]
3 years ago
6

Does anyone have the answers to this worksheet?

Chemistry
2 answers:
abruzzese [7]3 years ago
8 0
Use your periodic table
Sophie [7]3 years ago
5 0
Oh use a periodic table if you don’t have one you can look it up. Hope this helped
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Hey everyone edge.nuity is having an outage wanna talk ;)
sergejj [24]

Answer:

What's that??

Explanation:

Btw thanks for the points!! lol

5 0
3 years ago
Copper was the first metal to be produced from its ore because it is the easiest to smelt, that is, to refine by heating in the
Ganezh [65]

Answer:

57.48%

Explanation:

Calculate the mass of 1 mole of malachite:

MM Cu = 63.55

MM O = 16.00

MM H = 1.01

MM C = 12.01

(Cu_{2}(OH)_{2}CO_{3})

A mole of malachite has:

2 moles of Cu

5 moles of O

2 moles of H

1 mole of C

MW Malachite = 2*MM(CU) + 5*MM(O) + 2*MM(H) + 1 *MM(C)

MW Malachite = 2*63.55 + 5*16.00 + 2*1.01 + 1*12.01

MW Malachite = 221.13

Mass of Cu in a mole of Malachite = 2*MM(CU) = 127.1

Now divide the mass of Cu by the mass of Malachite

%Cu = \frac{127.1}{221.13} =0.5748=57.48%

7 0
4 years ago
Methyl red is a common azo dye. Which starting materials are used to prepare it?
Licemer1 [7]

Answer:

1. Diazonium salt

2. Coupling component

Explanation:

Azo dyes re synthesized by the combination of two organic compounds viz

1. Diazonium salt

2. Coupling component

1) For methyl red, the diazonium salt which is an intermediate product is produced by  the reaction of hydrochloric acid (HCL) with anthranilic acid and sodium nitrate (NaNO₂)

2) The produced diazonium salt is then combined with dimethylaniline which is a coupling component rich in electrons to undergo a chemical reaction  that by an aromatic substitution mechanism to produce methyl red as the final product.

8 0
3 years ago
Someone plz help me :(
Artemon [7]

Answer:

i guess it is C

i am not sure

3 0
3 years ago
Read 2 more answers
A certain substance is a poor conductor of electricity and has a high melting point this substance is most likely
Sophie [7]
B) as it is ionic, so has strong ionic bonds between molecules, but ions cant move so charge cant move through the material, meaning it can't conduct electricity very well

6 0
4 years ago
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