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3 years ago

HELP ME PLEASEE!!!! BRAINLIEST FOR CORRECT ANSWER NO COPY AND PASTE. CLICK ON THE IMAGE

Chemistry

2 answers:

a_sh-v [17]3 years ago

8 0

Conversion of energy describes that energy cannot be created or destroyed, when work is done, energy is changed from one form to another.

An example of conversion of energy is when a book is on a shelf it has gravitational potential energy, if it falls of the shelf it will have kinetic energy.

Though due to the process through which energy transfers take place not being 100% efficient, energy is sometimes lost to the surrounding and energy gets more spread out, air resistance and friction.

Some types of energy:

Gravitational
Kinetic energy
Strain energy
Nuclear energy
Internal Energy
Sound energy
Electric energy.

madreJ [45]3 years ago

3 0

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The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. ... The only way to use energy is to transform energy from one form to another.

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Can someone help with question 6 ASAP

Lera25 [3.4K]

Answer:

A metalloid is a type of chemical element which has a preponderance of properties in between, or that are a mixture of, those of metals and nonmetals. There is no standard definition of a metalloid and no complete agreement on which elements are metalloids. Despite the lack of specificity, the term remains in use in the literature of chemistry.

A series of six elements called the metalloids separate the metals from the nonmetals in the periodic table. The metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. These elements look metallic; however, they do not conduct electricity as well as metals so they are semiconductors. They are semiconductors because their electrons are more tightly bound to their nuclei than are those of metallic conductors. Their chemical behavior falls between that of metals and nonmetals. For example, the pure metalloids form covalent crystals like the nonmetals, but like the metals, they generally do not form monatomic anions. This intermediate behavior is in part due to their intermediate electronegativity values. In this section, we will briefly discuss the chemical behavior of metalloids and deal with two of these elements—boron and silicon—in more detail.

Explanation:

i hope this helps you :)

3 0

3 years ago

What is the best definition of weight

LenKa [72]

Answer:

a body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.

really depending on what weight you are referring to but thats the number 1 on dictonary

7 0

2 years ago

Read 2 more answers

Question 6

kompoz [17]

Considering the combined law equation, the new temperature is -244.56 °C or 28.44 K.

<h3>Boyle's law</h3>

Boyle's law states that the pressure of a gas in a closed container is inversely proportional to the volume of the container, when the temperature is constant: if the pressure increases, the volume decreases while if the pressure decreases, the volume increases.

Mathematically, this law states that the multiplication of pressure by volume is constant:

P×V=k

<h3>Charles's law</h3>

Charles's law states that the volume is directly proportional to the temperature of the gas: if the temperature increases, the volume of the gas increases while if the temperature of the gas decreases, the volume decreases.

Mathematically, Charles' law states that the ratio of volume to temperature is constant:

$\frac{V}{T} =k$

<h3>Gay-Lussac's law </h3>

Gay-Lussac's law states that the pressure of a gas is directly proportional to its temperature: increasing the temperature will increase the pressure, while decreasing the temperature will decrease the pressure.

Mathematically, Gay-Lussac's law states that the ratio of pressure to temperature is constant:

$\frac{P}{T} =k$

<h3>Combined law equation</h3>

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

$\frac{PxV}{T} =k$

Considering an initial state 1 and a final state 2, it is fulfilled:

$\frac{P1xV1}{T1} =\frac{P2xV2}{T2}$

<h3>New temperature</h3>

In this case, you know:

P1= 1 atm= 760 mmHg
V1= 15 L
T1= -30 °C= 243 K (being 0 °C= 273 K)
P2= 58 mmHg
V2= 23 L
T2= ?

Replacing in the combined law equation:

$\frac{760 mmHgx15 L}{243 K} =\frac{58 mmHgx23 L}{T2}$

Solving:

$T2x\frac{760 mmHgx15 L}{243 K} =58 mmHgx23 L$

$T2 =\frac{58 mmHgx23 L}{\frac{760 mmHgx15 L}{243 K}}$

Finally, the new temperature is -244.56 °C or 28.44 K.

Learn more about combined law equation:

brainly.com/question/4147359

#SPJ1

6 0

2 years ago

How many milliliters of 5.0M K2Cr2O7 solution must be diluted to prepare 250.0 mL of 0.37 M solution

creativ13 [48]

Hi, I am an AP chemistry student so I am confident this answer is correct. The answer would be 3.38 L or 3380 mL

3 0

3 years ago

Balanced equation: 2C6H8O6 + O2 = 2C6H6O6 + 2H2O

Viefleur [7K]

It might be .011355439 moles oxygen using the dimensional analysis formula i divided by the molar mass of the ascorbic acid then multiplied by the molar mass of the O2

5 0

3 years ago