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2 years ago

14

PLZ HELP ME WITH MY WORK

1 answer:

Delvig [45]2 years ago

4 0

Answer:

neutrons should be added with the protons

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Why would you add boiling chips/stones to a solution that is to be refluxed? when should you add them?

anygoal [31]

Answer: Boiling chips provide surfaces on which bubbles can form as the liquid boils.

Hope this helps!

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2 years ago

worty [1.4K]

I have no idea honestly I don’t remember I had it and I forgot it

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2 years ago

Fan blades would be an analogy for which atomic model?

julia-pushkina [17]

I believe the correct answer from the choices listed above is option A. Fan blades would be an analogy for electron cloud model. Austrian physicist Erwin Schrödinger (1887-1961) developed an “Electron Cloud Model<span>” in 1926. It consisted of a dense nucleus surrounded by a cloud of electrons. Hope this helps.</span>

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2 years ago

How many atoms are in 578g Na

borishaifa [10]

1.51 x 10²⁵atoms

Explanation:

Given parameters:

Mass of Na = 578g

Unknown:

Number of atoms = ?

Solution:

To find the number of atoms, we must first find the number of moles the given mass contains.

Number of moles = $\frac{mass}{molar mass}$

molar mass of Na = 23g

Number of moles = $\frac{578}{23}$ = 25.13moles

1 mole of a substance = 6.02 x 10²³atoms

25.13 mole of Na = 25.13 x 6.02 x 10²³atoms

This gives 1.51 x 10²⁵atoms of Na

Learn more:

Avogadro's constant brainly.com/question/2746374

#learnwithBrainly

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2 years ago

What is an indication that a lake is healthy?

N76 [4]

Answer:

D

Explanation:

As bioindicators are the organism that indicate or monitor the health of the environment

7 0

2 years ago

Read 2 more answers