3 years ago

Why are significant figures NOT important when solving problems in your math class?

1 answer:

4 0

They're not important when solving math problems in class because you need to get the correct and accurate answers hence don't need to change them into significant figures

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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>

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

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

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

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

$\\$

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3 years ago

Leona [35]

Explanation:

element symbol is Na

total electrons is 11

valences electron is 1

4 0

4 years ago

To balance a half-reaction in basic solution, you need to add enough of which substances to balance the equation?

OlgaM077 [116]

In balancing half-reactions, it is important to know if the medium is basic or acidic. For basic medium, what is added to the reactant side is the hyroxide ion OH- and what is added to the other side is H2O. The answer is the fifth option.

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3 years ago

8KCIO3 +1C12H22011

docker41 [41]

3.2 g KClO3

Explanation:

1.1 g C12H22O11 × (1 mol C12H22O11/342.3 g C12H22O11)

= 0.0032 mol C12H22O11

0.0032 mol C12H22O11 × (8 mol KClO3/1 mol C12H22O11)

= 0.026 mol KClO3

Therefore, the minimum amount of KClO3 needed is

0.026 mol KClO3 × (122.55 g KClO3/1 mol KClO3)

= 3.2 g KClO3

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3 years ago

Heat transfer between two substances is affected by specific heat and the chemical composition of the substances. state of matte

lesya [120]

Answer:

the answer is D

Explanation:

7 0

3 years ago

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