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irinina [24]
3 years ago
14

In the circuit diagram what does the line segment with two circles at the ends represent?

Chemistry
1 answer:
telo118 [61]3 years ago
4 0
I believe it would be a open switch because it is not connected to anything.
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Write the products and balance the equation:<br><br> C4H7OH + O2 → CO2 +H2O
skad [1K]

Answer:

C4H7OH + 6O2 => 4CO2 + 4H2O

Explanation:

hope This helps :)

8 0
3 years ago
Why doesn’t a convection current form when a liquid is heated at the top?
DaniilM [7]

If the heating is done on one small area on the top, there will be convection. If the heating is restricted to a small fraction of the heating area, then within that area the heating will go deeper than anywhere else on the surface. Then unheated area will have a shallower region of high temperature. Then some convection will occur in the deeper layers, causing some motion on top.

This happens quite a bit during welding. Convection is very significant in welding, even when the heating is from the top.

5 0
3 years ago
PLEASE HELP
marusya05 [52]
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boilboilboilnoilboil
8 0
3 years ago
Read 2 more answers
If this same quantity of energy were transferred to 2.5 kg of water at it's boiling point what fraction of the water would be va
garik1379 [7]

Answer:

Fraction of water that can be vaporized = 0.0961 or 9.61%

<em>Note : The question is incomplete. The complete question is given below:</em>

<em>A serving of Cheez-Its releases 130 kcal (1 kcal = 4.18 kJ) when digested by your body.</em>

<em>If this same quantity of energy were transferred to 2.5 kg of water at its boiling point, what  fraction of the water would be vaporized?</em>

Explanation:

Energy released by a serving of Cheeze-Its = 130 kcal

Since 1 kcal = 4.18 kJ, 130 kcal = 130 * 4.18 kJ = 543.4 kJ

Heat of vaporization (evaporating or condensing) Hv, of water = 2260 J/g

From formula, quantity of heat, Q = mass  * heat of vaporization

mass of water = 2.5 kg = 2500 g

Q = 2500 g * 2260 J/g

Q  = 5650000 J = 5650 kJ

Therefore 2.5 kg of water requires 5650 kJ of heat for complete vaporization

Fraction of water that can be vaporized by 543.4 kJ energy = 543.4/5650

Fraction of water that can be vaporized = 0.0961 or 9.61%

7 0
4 years ago
For each example, identify if the food contains mostly saturated or unsaturated fatty acids.
dedylja [7]

Answer:

1. Vegetable oil, which is a liquid at room temperature, is used in making cake batter. <u>Unsaturated</u>

2. Chocolate, which is solid at room temperature, is derived from a seed. <u>Saturated</u>

3. Butter<u>,</u> which is a solid at room temperature, is often used in cooking. <u>Saturated</u>

4. The oil inside flaxseed oil pills is liquid at room temperature. <u>Unsaturated</u>

Explanation:

Saturated fats are those kinds of fat that do not have a double bond between their carbon atoms when represented structurally. At room temperature, they tend to assume the solid-state, and they are mostly obtained from animal sources. Unsaturated fats do have a minimum of one double bond between their carbon atoms and tend to assume the liquid phase. They are mostly obtained from plant sources.<em> </em>

1. Vegetable oil is obtained from a plant source and is, therefore, unsaturated fat.

2. Chocolate even though it comes from cocoa is solid at room temperature and is mostly comprised of saturated fat.

3. Butter a solid at room temperature is mostly made up of saturated fat and is sourced from animals.

4. Flaxseed oil obtained from a plant source is mostly unsaturated fat.

3 0
3 years ago
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