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Lesechka [4]
3 years ago
10

Which statement correctly describes the location and charge of a proton in an atom? A. The protons are inside the nucleus with a

negative charge. B. The protons are inside the nucleus with a positive charge C. The protons are outside the nucleus with a negative charge. D. The protons are outside the nucleus with a positive charge.
Chemistry
1 answer:
ra1l [238]3 years ago
4 0
After looking at it, the answer is B
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The barium ion Ba2+ combines with the phosphate ion PO43- to form an ionic compound. Which is the formula for that compound?
ArbitrLikvidat [17]

Answer:

Ba3(PO4)2

Explanation:

since it's created by giving or taking electrons

5 0
2 years ago
How many moles of gas sample are 5.0 L container at 373K and 203kPa
Rom4ik [11]
For the purpose we will here use t<span>he ideal gas law:

p</span>×V=n×R×<span>T

V= </span><span>5.0 L

T= </span><span>373K

p= </span><span>203kPa
</span><span>
R is </span> universal gas constant, and its value is 8.314 J/mol×<span>K
</span>
Now when we have all necessary date we can calculate the number of moles:

n=p×V/R×T

n= 203 x 5 / 8.314 x 373 = 0.33 mole
 
6 0
3 years ago
What happens when the pressure of a gas is decreased?
Serggg [28]

Answer:

The combined gas law states that the pressure of a gas is inversely related to the volume and directly related to the temperature. If temperature is held constant, the equation is reduced to Boyle's law. Therefore, if you decrease the pressure of a fixed amount of gas, its volume will increase.

Explanation:

3 0
3 years ago
What is the mass of an object that requires a force of 25 N to accelerate at 5 m/s/s?
AfilCa [17]
The mass is 6 Kilograms

Explanation:

Force
=
mass
⋅
acceleration

30
=
m
⋅
5

m
=
6
K
g
The mass is 6 Kilograms
8 0
3 years ago
Nguyên tử nguyên tố sắt có 26e<br> a. Viết cấu hình e của sắt<br> b. Sắt thuộc nguyên tố s,p,d,f
vichka [17]

Answer:

1s2 2s2 2p6 3s2 3p6 3d6 4s2

Explanation:

3 0
3 years ago
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