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elixir [45]
3 years ago
9

Which procedure could a student use to examine an intensive property of a rectangular block of wood?

Chemistry
1 answer:
PolarNik [594]3 years ago
7 0
The formula they can use is Length multiplied by Width Multiplied by Height
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iren [92.7K]

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sin theta equals to cos theta then the value of sin 2 theta

8 0
2 years ago
A 12.0 g sample of a metal is heated to 90.0 ◦C. It is then dropped into 25.0 g of water. The temperature of the water rises fro
deff fn [24]

Answer:

The specific heat of the metal is 0.34 J/g°C

Explanation:

Step 1: Data given

Mass of the metal = 12.0 grams

Mass of the water = 25.0 grams

Initial temperature of the metal = 90.0 °C

Initial temperature of the water = 22.5 °C

Final temperature = 25 °C

Specific heat of water = 4.184 J/g°C

Step 2: Calculate the specific heat of the metal

Qlost = Qgained

Q = m*c*ΔT

Qmetal = -Qwater

m(metal) *c(metal)* ΔT(metal) = -m(water) * c(water) *ΔT(water)

⇒ with mass of metal = 12.0 grams

⇒ with c(metal) = TO BE DETERMINED

⇒ with ΔT(metal) = T2 - T1  = 25.0°C - 90.0 °C = -65.0 °C

⇒ with mass of water = 25.0 grams

⇒ with c(water) = 4.184 J/g°C

⇒ with ΔT(water) = T2 - T1 = 25.0 - 22.5 °C = 2.5 °C

12.0 * c(metal) * -65.0 °C = -25.0g * 4.184 J/g°C * 2.5°C

-780.0 * c(metal) = -2615  ( 2.6*10^3 with sig figs)

c(metal) = 0.335 (=0.34 with sig figs)

The specific heat of the metal is 0.34 J/g°C

3 0
3 years ago
Calculate no of moles in 42g of carbon ?
kondaur [170]

Answer:

\huge\boxed{n = 3.5\ moles}

Explanation:

<u><em>Given :</em></u>

Mass in grams = m = 42 g

Molar Mass = M = 12

<u><em>Required:</em></u>

No. of moles = n = ?

<u><em>Formula :</em></u>

m = m / M

<u><em>Solution:</em></u>

n = 42 / 12

n = 3.5 moles

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3 years ago
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Which of the following elements could be described as least reactive, relative to the other three answer choices?
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The correct Answer Should be Gold/AU
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Why are animals so impportant to our lifes
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Answer:

Animals are important because without them we wouldnt have any food

Explanation:

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