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miss Akunina [59]
4 years ago
15

How many neutron and protons are in lithium-7?

Chemistry
1 answer:
ikadub [295]4 years ago
6 0
So it contains three protons and four neutrons 
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i want to find the volume of a block of wood it has a length of 6 inches a width of 7 inces and a height of 8 inches what is the
JulijaS [17]

Answer:

336

Explanation:

L x w x h= 6 x 7 x 8 = 336

8 0
3 years ago
A term related to frequency that increases as frequency increases
zvonat [6]
As wavelength increases so does frequency
7 0
3 years ago
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6. How much energy is needed to freeze 88.0 g of silver?
Stella [2.4K]
7,040 energy to freeze the silver :)
8 0
3 years ago
Calculate the number of moles of an ideal gas if it occupies 1750 dm3 under 125,000 Pa at a temperature of 127 C.
Phoenix [80]

Hey there!


* Converts 1750 dm³ in liters :


1 dm³ = 1 L so 1750 dm³ = 1750 liters



* Convertes 125,000 Pa in atm :


1 Pa = 9.86*10⁻⁶ atm so 9.86*10⁻⁶ / 125,000 => 1.233 atm


* Convertes 127ºC in K :


127 + 273.15 => 400.15 K


R = 0.082 atm.L/mol.K


Finally, it uses an equation of clapeyron :


p * V = n * R * T


1.233 * 1750 = n * 0.082 * 400.15


2157.75 = n * 32.8123


n = 2157.75 / 32.8123


n = 65.76 moles



hope this helps!



5 0
3 years ago
Read 2 more answers
recommend an element use to fill bottles that contain ancient paper. the element should be a gas at room temperature, should be
Eduardwww [97]

Okay so we are given these requirements:

element which can be used to stuff bottles that enclose ancient paper
must be a gas at room temperature
must be denser than helium
must not react with other elements

 

The only element that comes into my mind is:

<span>Argon</span>

6 0
4 years ago
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