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2 years ago

6

You can choose from four different materials to make the handrails that run up the stairs and around the playhouse: steel, alumi

num, solid plastic, or pine wood.
2. Would you want to minimize or maximize the heat transfer to and from the handrails? Explain your reasoning.

1 answer:

Oduvanchick [21]2 years ago

8 0

I think it would be minimize so u can have more friction

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What is the systematic name of the following compound?

Ede4ka [16]

Answer: D. Potassium bromide

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3 years ago

why can the combined weights of several liquids mixed in an open flask be less than but never more than the sum of all the weigh

nexus9112 [7]

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2 years ago

If you transfer energy into two substances which one would melt first

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Answer:

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1 year ago

Is this statement true or false? Growth is caused by cells in your body dividing and making new cells.

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Answer:

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2 years ago

Nitrogen dioxide and water react to form nitric acid and nitrogen monoxide, like this:

posledela

Answer: The value of the equilibrium constant Kc for this reaction is 3.72

Explanation:

Equilibrium concentration of $HNO_3$ = $\frac{15.5g}{63g/mol\times 9.5L}=0.026M$

Equilibrium concentration of $NO$ = $\frac{16.6g}{30g/mol\times 9.5L}=0.058M$

Equilibrium concentration of $NO_2$ = $\frac{22.5g}{46g/mol\times 9.5L}=0.051M$

Equilibrium concentration of $H_2O$ = $\frac{189.0g}{18g/mol\times 9.5L}=1.10M$

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_c$

For the given chemical reaction:

$2HNO_3(aq)+NO(g)\rightarrow 3NO_2(g)+H_2O(l)$

The expression for $K_c$ is written as:

$K_c=\frac{[NO_2]^3\times [H_2O]^1}{[HNO_3]^2\times [NO]^1}$

$K_c=\frac{(0.051)^3\times (1.10)^1}{(0.026)^2\times (0.058)^1}$

$K_c=3.72$

Thus the value of the equilibrium constant Kc for this reaction is 3.72

5 0

2 years ago