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Paha777 [63]
2 years ago
13

Most homes are built with some form of insulation separating the inside of the home from the outside. What does this insulation

do?
A. It decreases the temperature difference between the outside and inside.
B. It increases the rate of heat flow between the outside and inside.
C. It decreases the rate of heat flow between the outside and inside.
D. It generates heat and allows it to flow inside but not outside.
Chemistry
1 answer:
Ad libitum [116K]2 years ago
6 0

Answer:

A. It decreases the temperature difference between the outside and inside.

Explanation:

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If you had 100 ml of juice, how many milliliter would de fruit juice?
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A 25.0 g block of a metal alloy at 100 C is dropped into an insulated flask containing 110 g of ice; 5.30 g of the ice melted. W
mr_godi [17]

Answer:

0.00353J/g/°C

Explanation:

I will assume the temperature of the ice to be approximately 0°C.

Moreover, Heat of fusion of water is 6kJ

Amount of heat used to melt 5.3g of ice = 5.3 x 6 / 18

=1.767g°C

Therefore

1.767 = 25 x specific heat cap. x 200

Specific heat cap. = 1.767/(25x200)

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6 0
3 years ago
Acetic acid (HC2H3O2, Ka=1.8x10^-5) is a weak acid. Calculate the pH of an aqueous solution of .25M acetic acid.
tensa zangetsu [6.8K]

Answer: The pH of an aqueous solution of .25M acetic acid is 2.7

Explanation:

HC_2H_3O_2\rightarrow H^+C_2H_3O_2^-

 cM              0             0

c-c\alpha        c\alpha          c\alpha  

So dissociation constant will be:

K_a=\frac{(c\alpha)^{2}}{c-c\alpha}

Give c= 0.25 M and \alpha = ?

K_a=1.8\times 10^{-5}

Putting in the values we get:

1.8\times 10^{-5}=\frac{(0.25\times \alpha)^2}{(0.25-0.25\times \alpha)}

(\alpha)=0.0084

[H^+]=c\times \alpha

[H^+]=0.25\times 0.0084=0.0021

Also pH=-log[H^+]

pH=-log[0.0021]=2.7

Thus pH is 2.7

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What is the percent yield of the purification system
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Answer: 90.3

Explanation:

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Why is it that the shoreline tends to have milder temperatures in the winter than mainland?
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3 years ago
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