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Rainbow [258]
3 years ago
12

PLEASE ANSWER

Chemistry
1 answer:
mihalych1998 [28]3 years ago
7 0

Answer: B. Both are right. Refraction causes the different wavelengths to become visible.

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Solution and hydrolysis combine to create ________ in streams.
Vaselesa [24]
~Hello there!

Your question: <span>Solution and hydrolysis combine to create ________ in streams.

Your answer: </span><span>Solution and hydrolysis combine to create corrosion in streams.

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5 0
3 years ago
How many moles are in 7.12 x 10^21 atoms of iron?
devlian [24]

To Find :

How many moles are in 7.12 \times 10^{21} atoms of iron.

Given :

We know, 1 mole of any element or compound contains exactly N_A ( Avogadro's Number ) atoms/compound .

Now, N_A = 6.022 \times 10^{23}

So, number of moles in given number of atoms are :

n = \dfrac{6.022 \times 10^{23}}{7.12 \times 10^{21}}\\\\n = 1.18 \times 10^{-2} \ mol

Hence, this is the required solution.

8 0
2 years ago
A student was given a mixture of iron of iron fillings and sulphur. He was told to heat it and observe the compound.
Fynjy0 [20]

Answer:

a) Black

b) Non-magnetic

c) No reaction with carbon disulphide.

d) i don't know sry

But i had to go through my 6th grade notes for this .____.

3 0
1 year ago
What is the pH of 1/2 L of drain cleaner?
Yanka [14]

Answer:

12 to 14

Explanation:

drain cleaners contain sodium hydroxide or potassium hydroxide which are strong bases . The pH value of sodium hydroxide and potassium hydroxide is 14 and 12 respectively on the pH scale. So, most drain cleaners have a pH of from 12 to 14, regardless of how much L there are.

4 0
3 years ago
Which of the following energy resources provides non-recyclable energy and is also the least polluting?
Whitepunk [10]

Answer:

b) Nuclear power

Explanation:

The nuclear power plant generated the nuclear energy that utilize the radio active materials like uranium i.e. finite. Thus, this is a non-recyclable.

Also this energy does not release any type of polluting gas neither it is harmful like carbon dioxide or any green house gases So it would be least polluting

Therefore as per the given statement, the option b is the correct one

7 0
2 years ago
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