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Brilliant_brown [7]
2 years ago
15

How many joules of energy is required to bring a five-pound (1 pound = 454 g) bag

Chemistry
1 answer:
sweet-ann [11.9K]2 years ago
5 0
The answer is 4567 grams of ice in the five pound bag to specific heat is the -20 degrees! Hope I helped! :)
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Your calculated density of aluminum is d = 2.69 g/cm3. Aluminum’s accepted density is 2.70 g/cm3. Without writing the "%" sign,
stepan [7]

Answer:

0.37 %

Explanation:

Given that:

Calculated density of aluminum = 2.69 g/cm³

Accepted density of aluminum = 2.70 g/cm³

Error\ percentage=\frac {|Accepted\ value-Calculated\ value|}{Accepted\ value}\times 100

Thus, applying values as:

Error\ percentage=\frac {|2.70-2.69|}{2.70}\times 100

<u>Percent error = 0.37 %</u>

7 0
3 years ago
Read 2 more answers
In a separate experiment beginning from the same initial conditions, including a temperature Ti of 25.0°C, half the number of mo
NNADVOKAT [17]

Answer:

- 178 ºC

Explanation:

The  ideal gas law   states that :

PV = nRT,

where P is the pressure, V is the volume, n is number of moles , R is the gas constant and T is the absolute temperature.

For the initial conditions :

P₁ V₁ = n₁ R T₁    (1)

and for the final conditions:

P₂V₂= n₂ R T₂    where   n₂ = n₁/2     then    P₂ V₂ = n₁/2 T₂    (2)

Assuming V₂ = V₁ and  dividing (2) by Eqn (1) :

P₂ V₂ = n₁/2 R T₂  / ( n₁ R T₁)      then  P₂ / P₁ = 1/2 T₂ / T₁

4.10 atm / 25.7 atm = 1/2 T₂ / 298 K ⇒ T₂ = 0.16 x 298 x 2 = 95.1 K

T₂ = 95 - 273 = - 178 º C

6 0
3 years ago
Jesse travels 3.0 meters east and then turns and travels 4.0 meters north. What distance did Jesse travel? 1 m 5 m, northeast 7
boyakko [2]
7.0 meters because 3.0+4.0=7 
3 0
3 years ago
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Which term describes something that displays all the characteristics of life?
zaharov [31]
A, it says on here good luckkkkkk
5 0
2 years ago
Select the correct answer from each drop-down menu. A student labels two 250 milliliter beakers with the letters A and B. She pu
Lelechka [254]

Answer:

The solution in beaker A is unsaturated

The solution in beaker B is saturated

Explanation:

A saturated solution is a solution that contains just as much solute as it can normally hold at a particular temperature. An unsaturated solution is a solution that contains less solute than it can normally hold at a particular temperature.

If more solute is added to a saturated solution, the added solute does not dissolve completely. However, if more solute is added to an unsaturated solution, the added solute dissolves.

4 0
2 years ago
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