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Natali [406]
3 years ago
12

When ironing clothes, the primary method of heat transfer is

Chemistry
1 answer:
salantis [7]3 years ago
7 0

A conduction cuz al, the materials are solid

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How would you figure the number of neutrons in an atom?
Sonbull [250]
<span>Mass Number = (Atomic Number) + (Number of Neutrons) so you solve for the Number of Neutrons and you get:
Number of Neutrons = (Mass number) - (Atomic Number) 

Mass Number equals protons plus neutrons, round atomic weight to nearest whole number
Atomic Number equals number of Protons</span>
3 0
3 years ago
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explain placed a dented table -tennis ball in boiling water is one way to remove the dent in the ball assume the ball has no hol
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3 years ago
Copper (II) Sulfate pentahydrate, CuSO4 X 5H20 is heated in an open crucible to remove the water. (a) Diagram the lab set up cle
balu736 [363]

The water molecules are not completely removed so additional heating is required.

Explanation:

We have the copper (II) sulfate pentehydrate with the chemical formula CuSO₄ · 5H₂O.

molar mass of CuSO₄ · 5H₂O = 159.6 + 5 × 18 = 249.6 g/mole

Knowing this, we devise the following reasoning:

if in       249.6 g of CuSO₄ · 5H₂O there are 90 g of H₂O

then in         8 g of CuSO₄ · 5H₂O there are Y g of H₂O

Y = (8 × 90) / 249.6 = 2.88 g of water

mass of dried CuSO₄ = mass of CuSO₄ · 5H₂O -  mass of H₂O

mass of dried CuSO₄ = 8 - 2.88 = 5.12 g

5.12 g is less that the weighted mass of 6.50 g. We deduce from this that the sample needs additional heating in order to remove all the water (H₂O) molecules.

Learn more about:

hydrates

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6 0
3 years ago
PLS HELP ME ON MY FINAL MULTIPLE CHOICE
dexar [7]

Answer:

The force would decrease

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How to know the elements amount of charge please give me example​
asambeis [7]

Answer:

There are four ways to find the charge of an element:

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Use a chart. ...

For a single atom, the charge is the number of protons minus the number of electrons.

Find the charge by balancing charge in a compound

3 0
3 years ago
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