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3 years ago

Make sure to explain your answer to each question part.

Chemistry

1 answer:

Vladimir [108]3 years ago

7 0

I have the same question why can’t I accept this comment HELPPP 3737

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It’s on September 12th :)

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3 years ago

Elements listed in vertical columns of the periodic table:

marysya [2.9K]

Vertical columns are called groups, or families.

They share similar chemical properties.

Answer: <span>have similar chemical properties</span>

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3 years ago

Read 2 more answers

Please help me, It's my last question :)

Vedmedyk [2.9K]

<h3>Given:</h3>

$V_{1} = \text{5 L}$

$T_{1} = \text{298 K}$

$V_{2} = \text{3 L}$

<h3>Unknown:</h3>

$T_{2}$

<h3>Solution:</h3>

$\dfrac{V_{1}}{T_{1}} = \dfrac{V_{2}}{T_{2}}$

$T_{2} = T_{1} \times \dfrac{V_{2}}{V_{1}}$

$T_{2} = \text{298 K} \times \dfrac{\text{3 L}}{\text{5 L}}$

$\boxed{T_{2} = \text{179 K}}$

$\\$

#ChemistryIsLife

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3 years ago

A student pipets 10 ml of a 0.0693 m solution of kbr into a 500 ml volumetric flask and dilutes to the mark. what is the concent

Sonja [21]

The initial concentration of solution is 0.0693 M. The volume of solution taken is 10 mL and it is diluted to a final volume of 500 mL.

According to dilution law, the product of initial concentration and volume is equal to the product of final concentration and volume as follows:

$C_{1}V_{1}=C_{2}V_{2}$

Here, $C_{1}$ is initial concentration, $C_{2}$ is final concentration, $V_{1}$ is initial volume and $V_{2}$ is final volume.

Rearranging to calculate final concentration,

$C_{2}=\frac{C_{1}\times V_{1}}{V_{2}}$

Putting the values,

$C_{2}=\frac{0.0693 M\times 10 mL}{500 mL}=0.001386 M$

Therefore, concentration of the resulting solution is 0.001386 M.

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3 years ago

Chemicals that cause cancer or called

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They are called carcinogens

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3 years ago