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harkovskaia [24]
3 years ago
11

Which energy changes would take place when a water is heated using a Bunsen burner?

Chemistry
1 answer:
antiseptic1488 [7]3 years ago
4 0

Answer:

Heat energy causes water molecules to gain kinetic energy. More energy is gained by these molecules into potential energy to expand into atmosphere to form vapor molecules.

.

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What energy transformations occur in a hot air balloon?
Colt1911 [192]

Answer:

: kinetic energy is the energy transformation that occurs in a hot balloon.

Explanation:

Hot air balloons use a propane burner that converts chemical energy to thermal energy. The hot air is less dense than than the colder air and it lifts the balloon

5 0
3 years ago
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Why do you think we are able to study the atom in the modern world?
andriy [413]
Advancement in technology to help with detailed studies
6 0
2 years ago
A biologist has two brine solutions, one containing 4% salt and another containing 16% salt. How many milliliters of each soluti
agasfer [191]

Answer:

400 mL of 4% salt solution and 600 mL of 16% salt solution need to be mixed

Explanation:

Let's assume concentration of brine salt solutions are in %(w/v) unit.

Final mixture has a concentration of 11.2% salt and volume of 1 L or 1000 mL

Hence, amount of salt in final mixture = \frac{11.2\times 1000}{100}g=112g

Suppose x mL of 4% salt solution and (1000-x) mL of 16% salt solution need to be mixed to get final mixture

So, amount of salt in x mL of 4% salt solution = \frac{4x}{100}g

      amount of salt in x mL of 16% salt solution =\frac{16\times (1000-x)}{100}g

Hence, \frac{4x}{100}+\frac{16\times (1000-x)}{100}=112

or, x=400

So, 400 mL of 4% salt solution and 600 mL of 16% salt solution need to be mixed

3 0
3 years ago
5. Cholesterol is one form of<br> (Fat, protein, minerals)
Alchen [17]

Answer:

Protein

Explanation:

Cholesterol is actually part lipid, part protein

4 0
3 years ago
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Which of the following does not influence the effectiveness of a detergent? A-air temperature B-water temperature C-energy appli
Natasha2012 [34]

<em> A-air temperature does not influence the effectiveness of a detergent</em>

\boxed{\boxed{\bold{Further~explanation}}}

In chemical reactions several factors influence among others:

1. Temperature

The temperature of the reaction that is raised will cause the particles to move more actively so that collisions between particles will become more frequent so that the speed of chemical reactions will be greater

2. Pressure

Addition of pressure will increase the concentration because the volume is reduced, a greater concentration will accelerate the reaction

3. Concentration / substance level

The greater the level, the more substances dissolved and involved in the reaction, thereby increasing the speed of the reaction

4. Stirring

The mechanical force applied to the solution that reacts will cause more collisions to accelerate the reaction

5 Catalysts

Addition of a catalyst to accelerate the reaction without reaction with reactant substances

Detergents are used as cleaning removers of dirt on clothes or oily/fatty items

The main structure of detergent is surfactant which has hydrophobic (binding fat) and hydrophilic (which binds water) parts

Surfactants also function to reduce water surface tension so that it is easier to bind dirt

Surfactants can be anionic in which there are derivatives of Benzene, namely: Alkyl Benzene Sulfonate obtained from sulfonation reactions where hydrogen in benzene is substituted by sulfonate groups (HSO₃⁻) reaction with sulfuric acid (H₂SO₄)

If we see the answer choices:

A. Air temperature

Air does not play a role in the reaction or cleaning process of dirt by detergents, so it is not an effective or ineffective factor in detergent cleaning

B. Water temperature

The right water temperature by adjusting the conditions of clothing materials will increase the effectiveness of detergents, for example, hot temperatures suitable for lifting oil/oil stains, warm/cold temperatures for clothes that are not too dirty and made of silk/wool

C. Energy gave

The energy in the cleaning process can be done through mechanical energy so that the collision between the particles of detergent and dirt will occur more so that faster removal of dirt

D. the length and frequency of the treatment

Sufficient time and the frequency of contact between detergents and ingredients, especially for dirty and hard-to-lose materials, will make removal of dirt better

\boxed{\boxed{\bold{Learn~more}}}

the effect of temperature and surface area on the rate of chemical reactions

brainly.com/question/3790472

The factor causes the particles in a chemical reaction to slow down

brainly.com/question/11504796

the factor can decrease the rate of a chemical reaction

brainly.com/question/807610

factors could be used to increase the reaction rate

brainly.com/question/11482161

Keywords: detergent, reaction rate, temperature, Catalysts, Pressure, Concentration/substance level

3 0
3 years ago
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