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muminat
3 years ago
11

in the process of electricity, what flows through the wires?A) protons B)neutronsC)electronsD)positrons

Chemistry
1 answer:
gizmo_the_mogwai [7]3 years ago
8 0

Electrons is your answer

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Determine the number of atom in 5.0 moles in SI
Alex

Answer: 3.01 x 10^24 atoms

Explanation:

Based on Avogadro's law:

1 mole of any substance has 6.02 x 10^23 atoms

So, 1 mole of SI = 6.02 x 10^23 atoms

5.0 moles = Z atoms

To get the value of Z, cross multiply:

(Z atoms x 1 mole) = (6.02 x 10^23 atoms x 5.0 moles)

Z atoms•1 mole = 30.1 x 10^23 atoms•moles

Divide both sides by 1 mole

Z atoms•1 mole / 1 mole = 30.1 x 10^23 atoms•moles / 1 mole

Z = 30.1 x 10^23 atoms

[Place Z in standard form

So, Z = 3.01 x 10^24 atoms]

Thus, there are 3.01 x 10^24 atoms in 5.0 moles in SI

5 0
3 years ago
Which is a compound?<br> a. iodine.<br> b. water.<br> c. calcium.<br> d. air.
alexgriva [62]
The answer is b) Water.

a) and c) options are elements and d) option is a mixture.
4 0
3 years ago
Calculate the moles of 25.2 g Na2S2O8
vekshin1

Answer:

To calculate the moles we must first find the molar mass M

M (Na2S2O8) = (23*2) + (32*2) + (16*8)

= 46 + 64 + 168

= 278g/mol

Molar mass = mass/moles

moles =mass / molar mass

= 25.2/278

= 0.0906mol

Hope this helps.

4 0
3 years ago
What is the nature of the Ca-Cl bond in a molecule of calcium chloride (CaCl2) if the electronegativity value of calcium is 1.0
PIT_PIT [208]
3,16-1 = 2,16 -----> IONIC BONDING
:)
8 0
3 years ago
How do you make a Bohr’s model
alexandr1967 [171]

U put all the atoms on the Bohr model


4 0
3 years ago
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