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3 years ago

Which direction does thermal energy flow in the following diagram? the picture is of someone holding an ice cream cone

2 answers:

8 0

The answer is B. Heat flows from the hand to the ice cream. The state of equilibrium won't occur for this since the only reactant is heat.

Masja [62]3 years ago

5 0

<h2>Answer : Option B) Heat flows from the hand to the ice-cream.</h2><h3>Explanation : </h3>

The thermal energy flow would require a source to get transferred to an object which has less thermal energy than the source. Here, the energy source is a person and the object is ice-cream. The source of thermal energy will be in a person and the energy will flow from the hand of the person to the ice-cream as there is low thermal energy in ice-cream.

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What causes gas particles to collide with the walls of their containers?

blondinia [14]

Answer:

Kinetic energy

Explanation:

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3 years ago

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PolarNik [594]

Answer:

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Explanation:

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2 years ago

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How many moles of na are needed to produce 4 moles of nacl in this reaction? 2na + cl2 → 2nacl?

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14...........................

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2 years ago

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such

8_murik_8 [283]

Answer:

0.0164 g

Explanation:

Let's consider the reduction of silver (I) to silver that occurs in the cathode during the electroplating.

Ag⁺(aq) + 1 e⁻ → Ag(s)

We can establish the following relations.

1 A = 1 C/s
The charge of 1 mole of electrons is 96,468 C (Faraday's constant)
1 mole of Ag(s) is deposited when 1 mole of electrons circulate.
The molar mass of silver is 107.87 g/mol

The mass of silver deposited when a current of 0.770 A circulates during 19.0 seconds is:

$19.0s \times \frac{0.770c}{s} \times \frac{1mole^{-} }{96,468C} \times \frac{1molAg}{1mole^{-}} \times \frac{107.87g}{1molAg} = 0.0164 g$

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2 years ago

Is baking cake a acid base reaction

Zinaida [17]

When baking powder is added to a cake, the acid base reaction it undergoes with the acidic butter produces the carbon dioxide that makes the cake rise.

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