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Ugo [173]
3 years ago
11

What the total number of neutrons in a atom of 0-18?

Chemistry
1 answer:
Allushta [10]3 years ago
5 0
The answer is: 10
I could be wrong
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Explain how the equation for GPE = force x distance.
Mkey [24]
GPE is the gravitational Potential Energy which is given by mgh.

mg is the gravitational force(a force) and h is the height of the object(or distance of the object from earth's surface)

SO GPE = mg (force) x h (distance)
4 0
3 years ago
Identify the single displacement reaction.
pishuonlain [190]

Answer : The correct option is, (D)

Explanation :

Option A reaction : C_4H_{12}+7O_2\rightarrow 6H_2O+4CO_2

It is a combustion reaction. A reaction in which a hydrocarbon react with the oxygen to give product as carbon dioxide and water.

Option B reaction : 2H_2+O_2\rightarrow 2H_2O

It is a combination reaction. A reaction in which the two or more reactants react to give a product.

Option C reaction : Al_2S_3\rightarrow 2Al+3S

It is a decomposition reaction. A reaction in which a reactant decomposes to form two or more products.

Option D reaction : Cl_2+2KBr\rightarrow 2KCl+Br_2

It is a single displacement reaction. It is a reaction in which the more reactive element displace the less reactive element.  In this reaction, most reactive element chlorine displaces the less reactive element bromine.

Hence, the correct option is, (D)

3 0
3 years ago
Read 2 more answers
Which equation shows how to calculate how many grams (g) of KOH would be needed to fully react with 4 mol Mg(OH)2? The balanced
bazaltina [42]
Mole ratio:

MgCl₂ + 2 KOH = Mg(OH)₂ + 2 KCl

2 moles KOH ---------------- 1 mole Mg(OH)₂
moles KOH ------------------- 4 moles Mg(OH₂)

moles KOH = 4 x 2 / 1

= 8 moles of  KOH

molar mass KOH = 56 g/mol

mass of KOH = n x mm

mass of  KOH = 8 x 56

= 448 g of KOH 

hope this helps!

3 0
3 years ago
Read 2 more answers
OCAS GAME
makkiz [27]

ok so this was really confusing, but i think i know the answer. D. ...hairy and ancient hermit crabs and swift, darting minnows and sometimes a

crumbling sand dollar.

7 0
4 years ago
If a car travels 400.0 meters in 20.0 seconds, how fast is it going?<br> m/s<br> Please help me
Viefleur [7K]

Answer:

20m/s.

Explanation:

8 0
3 years ago
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