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3 years ago

What would most likely be included in the “Analysis” section of a lab report?

1 answer:

5 0

The purpose of the analysis section of a lab report is to detail what happened in the lab and what the outcome of the project was as a result of said events.

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1. What objects in this picture are in motion?

Likurg_2 [28]

Sled going down is in motion
Sled hitting rock is unbalanced
He flew because the of the sudden stop threw them off

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1 year ago

The bonding electrons in a non-polar compound are:

lara31 [8.8K]

Its A) Shared equally
Non-polar bonds are a type of chemical bond where two atoms share a pair of electrons with each other.

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2 years ago

Solid lead acetate is slowly added to 75.0 mL of a 0.0492 M sodium sulfate solution. What is the concentration of lead ion requi

Firdavs [7]

Answer:

The concentration of lead ion required to just initiate precipitation is - $2.37\times10^-^5 M$

Explanation:

Lets calculate -:

Solubility equilibrium -: $PbI_2(s)$ ⇄ $Pb^2^+ (aq) + 2I^- (aq)$

Solubility product of $PbI_2$ , $Q=[Pb^2^+]_i_n_i_t_i_a_l$ $[I^-]^2_i_n_i_t_i_a_l$ $=9.8\times10^-^9$

Concentration of $I^-$ $=[KI]=0.0492M$

When the ionic product exceeds the solubility product , precipitation of salt takes place .

$Q_s_p\geq K_s_p$

$[Pb^2^+]_i_n_i_t_i_a_l$ $[I^-]^2_i_n_i_t_i_a_l$ $\geq 9.8\times10^-^9$

$[Pb^2^+]_i_n_i_t_i_a_l$ $[0.0492]^2$ $\geq 9.8\times10^-^9$

$[Pb^2^+]_i_n_i_t_i_a_l$ $\geq \frac{9.8\times10^-^9}{[0.0492]^2}$

$[Pb^2^+]_i_n_i_t_i_a_l$ $\geq$ $\frac{9.8\times10^-^9}{2.42\times10^-^3}$

$[Pb^2^+]_i_n_i_t_i_a_l$ $\geq$ $2.37\times10^-^5 M$

Thus , $PbI_2$ will start precipitating when $[Pb^2^+]_i_n_i_t_i_a_l$ $\geq 2.37\times10^-^5 M$ .

3 0

2 years ago

Which best describes the current model of the atom?

slavikrds [6]

Explanation:

i think the answer might be D

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2 years ago

Please Help: Chemistry Quick Question For Brainly

Naya [18.7K]

Nope it doesnt i seriously just dropped an aspirin in water like an hour ago lol if you teacher says other wise they need to actually drop one in water

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3 years ago