Mengapa air panas maupun air dingin yang disimpan di dalam termos cenderung lebih tahan lama suhu panas atau dinginnya

Answers

Answer 1

Answer: yes yes yes yes yes yes yes yes yes yes

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When a rocket rises what causes the reaction force

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The action force when a rocket rises is caused by the rocket expelling gas out of its engine. The rocket reacts by moving in the opposite direction and lifting off from the launch pad.

Select the correct answer.If a silver nitrate solution is added to excess sodium sulfide, this reaction takes place: 2AgNO3(aq) + Na2S(aq) → Ag2S(s) + 2NaNO3(aq).
Suppose you use 0.0150 liter of a 2.50 M solution of silver nitrate. Assuming the reaction goes to completion, how much silver sulfide is produced? Use the periodic table.
A. 1.49 g
B. 4.65 g
C. 9.30 g
D. 18.6 g

Answers

Answer:- B. 4.65 g.

Solution:- The given balanced equation is:

$2AgNO_3(aq)+Na_2S(aq)\rightarrow Ag_2S(s)+2NaNO_3(aq)$

It asks to calculate the mass of silver sulfide formed by when 0.0150 liters of 2.50 M of silver nitrate are used.

Moles of silver nitrate are calculated on multiplying it's liters by its molarity and then on multiplying by mol ratio, the moles of silver sulfide are calculated. These moles are multiplied by the molar mass to convert to the grams.

Molar mass of $Ag_2S$ = 2(107.87)+32.06 = 247.8 g per mol

The dimensional set up for the complete problem is:

$0.0150L((2.50molAgNO_3)/(1L))((1molAg_2S)/(2molAgNO_3))((247.8gAg_2S)/(1molAg_2S))$

= $4.65gAg_2S$

So, the correct choice is B. 4.65 g.

Answer:

that jawn gon be 4.65 g

What cause local winds to form?

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Local winds are small-scale winds produced by local changes in air pressure

Dits causes from air when it's raining and then it stops and I The wind will come

Moving water can be used to produce electricity becausea. most forms of energy can be converted into other forms
b. energy cannot be converted into other forms of energy
c. potential energy can be converted into kinetic energy, but not vice virsa
d. kinetic energy can be converted into potential energy, but not vise virsa

Answers

Moving water can be used to produce electricity because most forms of energy can be converted into other forms. The kinetic energy of water is used to generate electrical energy.

What is energy transformation ?

According to the law of conservation of energy, energy can neither be created nor be destroyed. However, one form of energy can be transformed to the other form.

The generation of electrical energy is a good example of energy transformation. Electrical energy is generated from the thermal energy, hydroelectric energy or nuclear energy.

Moving water have enough kinetic energy to provide mechanical energy for a generator that convert this energy into electrical energy. Therefore, option a correctly describe the possibility of energy transformation.

Find more on energy transformation :

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A) is the correct answer.

Why the water drops were difficult to split apart but easy to join together?

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They have large cohesion: the attraction between particles of the same material.

What type of Technology would you want to use to study the gas giant planets

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To study the gas giants, scientists and space explorers used spacecraft and probes. And also, one of the breakthroughs, that made exploration in the outer planet much easier was the planet gravity assist concept wherein, a much smaller space craft is used to launch in order to cope up with the accelerated speed if a spacecraft approaches the planet.

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