Please write balanced equations for these reactions! WILL GIVE BRAINLIEST! 50 POINTS

Chemistry

1 answer:

Romashka [77]3 years ago

3 0

Answer:

(NH4)2S(aq) + Pb(NO3)2(aq) --> 2NH4NO3 (aq) + PbS (s)

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How does mass defect relate to nuclear binding energy

disa [49]

Answer:

Nuclear binding energy is the energy required to split am atoms nucleus into protons and neutrons.Mass effect is the difference between the predicted mass and the actual mass of an atoms nucleus. the binding energy of a system can appear as extra mass, which accounts for the difference.

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3 years ago

How to calculate the frequency of an ion

sergij07 [2.7K]

solution:

You need to find the frequency, and they have already given you the wavelength. And since you already know the speed of light, you can use formula (2) to answer this problem. Remember to convert the nano meters to meters because the speed of light is in meters. $(1 nm = 1.0 x 10^{-9} m)$

$v=c\lambda \\v= (3.00 \times 10^8 m/s)/(6.9\times 10^-7 m) \\v = 4.35 \times 10^{14} s^{-1}$

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4 years ago

Three quantum numbers are derived from Schrodinger’s equation that describe the probability of finding an electron around a nucl

hodyreva [135]

Principle: Orbital size & main energy level

Angular: Orbital shape

Magnetic: Orbital orientation

Orbital size is Principle; main energy level is Principle; shape is Angular; orientation is Magnetic

Principle:

imagine a bullseye. each ring shows how far its from the nucleus

Angular:

0 looks like circle

1 looks like a bowtie

2 looks like a flower or 4 leaf clover

3 looks like multiple lobes

Principle Quantum Number: It describes the size of the orbital and the main energy level. It is represented by n. Where, n = 1,2,3,4....stands for K, L, M, N shell and so on..

Angular momentum Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number : It describes the orientation of the orbitals. It is represented as . The value of this quantum number ranges from . When l = 2, the value of will be -2, -1, 0, +1, +2.

brainly.com/question/16979660

3 0

2 years ago

Pls help! Due today.

iragen [17]

Answer:

Explanation:

% yields = <u>experimental yields</u> / theoretical yields )x 100%

=( 302 ÷ 320 )x 100% = 94.4 %

% error = 100% - 94.37% 5.64%

or u can use this law :

% error =(theoretical value - experimental value )/ theoretical value) x 100%