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podryga [215]
3 years ago
8

Hi there, I need help producing the aim and hypothesis for the question

Chemistry
1 answer:
svetlana [45]3 years ago
4 0

Answer:

in supernova gold can be turned into lead.

its practical to obtain gold from lead

hope this helps you☺️☺️

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How do you do this?
Alona [7]
It would be Atom 2 because the proton and neutron are both nine and the election is 8 which is -1 to nine <span />
7 0
2 years ago
What is the temperature when ice Melt
kenny6666 [7]

The temperature when ice melts is 32 degrees Fahrenheit.

6 0
3 years ago
BRAINLIESTTT ASAP!!! PLEASE HELP ME :)
lapo4ka [179]

Steps/Answers:

Jot down the metal name.

Write the metal name ending in -idle.

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Hope This Helps!       Have A Nice Day!!

5 0
3 years ago
What is the pH of a solution made by mixing 30.00 mL 0.10 M HCl with 40.00 mL of 0.10 M KOH? Assume that the volumes of the solu
nirvana33 [79]

Answer:

pH = 12.15

Explanation:

To determine the pH of the HCl and KOH mixture, we need to know that the reaction is  a neutralization type.

HCl  +  KOH  →  H₂O  +  KCl

We need to determine the moles of each compound

M = mmol / V (mL) → 30 mL . 0.10 M = 3 mmoles of HCl

M = mmol / V (mL) → 40 mL . 0.10 M = 4 mmoles of KOH

The base is in excess, so the HCl will completely react and we would produce the same mmoles of KCl

HCl  +  KOH  →  H₂O  +  KCl

3 m       4 m                       -

             1 m                      3 m

As the KCl is a neutral salt, it does not have any effect on the pH, so the pH will be affected, by the strong base.

1 mmol of KOH has 1 mmol of OH⁻, so the [OH⁻] will be 1 mmol / Tot volume

[OH⁻] 1 mmol / 70 mL = 0.014285 M

- log [OH⁻] = 1.85 → pH = 14 - pOH → 14 - 1.85 = 12.15

3 0
3 years ago
Question 12 (1 point)
Vinvika [58]

Answer:

Option c. Neutral

Explanation:

Only neutral solution gives a green colouration to a pH paper

8 0
3 years ago
Read 2 more answers
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