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Ipatiy [6.2K]
2 years ago
10

What mass of sugar should be dissolve in 30g of water to ger 25 percentage weight by weight solution

Chemistry
1 answer:
dalvyx [7]2 years ago
8 0

Answer:ko;;nok

Explanation:

;ok';

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All organic substances contain carbon atoms.
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Which Two of the following are pure substances*
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I think A and B

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If a proton and an electron are released when they are 5.50×10−10 mm apart (typical atomic distances), find the initial accelera
Vlada [557]

Answer: The initial acceleration of the proton = (4.56 × 10^23) m/s2

The initial acceleration of the electron = (8.36 × 10^26) m/s2

Explanation: The force of attraction between the proton and electron can be computed using the statements of Coulomb's law which state that the force of attraction between two charged particles is directly proportional to the product of the two charges and inversely proportional to the square of their distances apart.

F = (Kq1q2)/(r^2) where K = (9 × (10^9) Nm(C^-2))

But q1 is the charge on a proton = (1.6 × (10^-19)) C

q2 is charge on an electron = -(1.6 × (10^-19)) C

r = (5.50 × (10^-10))mm = (5.50 × (10^-13))m

Computing all that, F = 0.0007616529 N = (7.62 × 10^-4) N

But the force of attraction is converted to that required for motion when they're released.

F = ma.

For proton, m = (1.67 × 10^-27) kg

a = F/m = 0.000762/(1.67 × 10^-27) = (4.56 × 10^23) m/s2

For electron, m = (9.11 × 10^-31) kg

a = F/m = 0.000762/(9.11 × 10^-31) = (8.36 × 10^26) m/s2

QED!

7 0
2 years ago
Please help due right now <br> 10 POINTS
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Answer:

F=ma

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F=m×a

according to that F÷m=a and also F ÷a=m

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Elements that belong to the same period/row!!
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Each row is called a period. Each column is called a group or family.

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