How is thermal energy being transferred when steam rises from a beaker of boiling water?

Answer:

1. B- weight

2. B- 2.0g/cm3

3. C- 22.8g/cm3

Explanation:

Answer:b

Explanation:

I honestly don’t know if this I right but that would be my guess

The measurement 45 N represent the magnitude (size) of a force in photograph. Therefore, option C is correct.

The magnitude of the force is the number that represents the force's strength. Assume the force is 10 N in the direction of the east. The direction is indicated by 'towards east,' and the magnitude is indicated by '10'. Magnitude is thus the 'value' or 'amount' of any physical quantity.

The magnitude of force is expressed in mass times length times time squared. The most common metric unit is the newton (N), which is defined as one kilogram times one meter over one second squared.

Thus, option C is correct.

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Answer:

If the length of a wire is doubled the resistance is shortened if it is thicker is is more durable due to the electrons having more room to spread out and flow through the wire

I hope this will help you

Answer:

20 m/s

Explanation:

Answer:

Empirical formula: Na3S4O9

Molecular formula: Na6S8O18

Explanation:

1) To find the empirical formula, which is the simplest whole number ratio of each element that makes up this unknown compound, we first divide the portion of each element by it's respective atomic mass.

Na= 23g/mol, S= 32g/mol, O=16g/mol

Na = 20.2/23 = 0.878mol

S = 37.6/32 = 1.175mol

O = 42.2/16 = 2.638mol

Next, we divide each number of moles by the smallest value (0.878mol)

Na = 0.878/0.878 = 1

S = 1.175/0.878 = 1.34

O = 2.638/0.878 = 3.004

Next, we multiply each decimal fraction by 3 to make it whole no:

Na = 3

S= 4.02 ~ 4

O= 9.012 ~ 9

The simplest ratio between Na, S and O is 3:4:9 hence, the empirical formula is Na3S4O9

2) To get the molecular formula, we use the molecular weight of each element in the empirical ratio, and the overall molar mass of the compound i.e.

Molar mass of compound= 682.8g/mol

molecular weight of Na3S9O4 = (3 x 23g/mol) + (4 x 32 g/mol) + (9 x 16 g/mol)

= 69 + 128 + 144

= 341 g/mol

Hence, (Na3S4O9)n = 682.8g/mol

= (341)n = 682.8

n = 682.8/341

n = 2.002

n~ 2

Hence, molecular formula = (Na3S4O9)2

= Na6S8O18

The empirical and molecular formula are Na₃S₄O₉ and Na₆S₈O₁₈

respectively.

The empirical formula can be gotten by dividing each element by it's

respective atomic mass.

Na= 23g/mol, S= 32g/mol, O=16g/mol

Na = 20.2/23 = 0.878mol

S = 37.6/32 = 1.175mol

O = 42.2/16 = 2.638mol

Then divide each number of moles by the smallest value  which in this case is 0.878mol.

Na = 0.878/0.878 = 1

S = 1.175/0.878 = 1.34

O = 2.638/0.878 = 3.004

Next, we multiply each decimal fraction by 3 to make it whole no:

Na = 3

S= 4.02 ~ 4

O= 9.012 ~ 9

The simplest ratio between Na, S and O is 3:4:9 hence, the empirical formula is Na₃S₄O₉

The molecular formula is calculated by multiplying the molecular weight of each element with empirical ratio to get overall molar mass of the compound

Molar mass of compound is given as 682.8g/mol

Molecular weight of Na₃S₉O₄ = (3 x 23g/mol) + (4 x 32 g/mol) + (9 x 16 g/mol)

= 69 + 128 + 144

= 341 g/mol

Hence, (Na3S4O9)n = 682.8g/mol

= (341)n = 682.8

n = 682.8/341

n = 2.002

n~ 2

Hence, molecular formula = (Na₃S₄O₉)²

= Na₆S₈O₁₈

Answer:

The correct answer is option A

Explanation:

The extreme temperatures lead to the unfolding of a polypeptide chain resulting in a change in composition and generally a loss of function. If the protein working as an enzyme denatures, it will make that protein to lose its enzymatic activity.

Answer:

Denatures

Explanation:proteins are very sensitive to temperature change

Explanation:

electrons in the highest energy orbitals which are able to contribute to Bonding are valence electrons,....... please mark me brainiest

Answer:

d

Explanation:

Answer:

Chemical Energy

Explanation:

Answer:

yes

Explanation:

The  things like magic, astrology and psychic predictions not considered science as it only consider on the proves given by the experiments and the theory not on the random predictions.

The science, any universe of source of knowledge that deals with the physical and chemical  world and its processes and that deals with the observations and experimentation with conclusion and results.

The magic is about the secret tricks done by magician and astrology is the observing the space and universe all above the earth and psychic deals with the human psychology.

Therefore, things like magic, astrology and psychic predictions not considered science as it only consider on the proves given by the experiments and the theory not on the random predictions.

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Answer: 6y-2

Explanation: If it is not equal to something, then it will just be plain old

6y-2. Unless you have to graph it...

Answer:

B. Dipole-dipole

Explanation:

Dipole-dipole is an intermolecular force between polar molecules, where the positive end of one molecule is attracted to the negative end of the second molecule. Polar molecules form dipoles because they contain both electron-rich and electron-deficient regions, thus containing a partial positive pole and a partial negative pole within the same molecule. Examples of molecules that form dipole-dipole interactions include acetone and formaldehyde.

The intermolecular force acting in CH3CH3 is the dispersion forces.

The nature of intermolecular forces between molecules depends on the polarity of the molecules. Nonpolar polar molecules only have weak dispersion forces acting between their molecules.

The molecule CH3CH3 is a nonpolar molecule. Since it is nonpolar, the only intermolecular force acting between its molecules is the weak dispersion forces.

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Answer:

28

Explanation:

Velocity ratio= Radius of wheel/radius of axle

Radius of wheel= 4.125 inches

Radius of axle= 0.125 inches

Velocity ratio = 4.125/0.125 = 33

Then;

Efficiency = mechanical advantage/velocity ratio × 100

Since the efficiency of the system = 85%

85 = mechanical advantage/33 × 100

Mechanical advantage = 85 × 33/100 = 28

During the phase change, when solid melts into liquid, its temperature remains constant as the heat energy is stored as potential energy. Likewise, as heat is added to a liquid, its temperature increases as the molecules, once again, move faster.

Melting is the physical process where solid gets converted to the liquid phase. When lauric acid was melting heat was added to it, but the temperature did not rise as it was used in breaking the intermolecular forces.

Melting is categorized as a physical change that is reversible. It involves the transition phase of the matter. Here the solids get converted to liquids.

It is a phase change where the heat is added to the object to undergo physical alterations. The heat energy is stored as potential energy in melting.

This energy and heat are used to break the intermolecular forces present in the matter so that the phase of the matter can be converted from solids to liquids.

Therefore, the heat energy in melting is used to break the forces and bonds.

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Answer:

Typically metals.

Explanation:

Explanation:

Oxygen-16 and oxygen-18 differ in structure only in that oxygen-18 has two more neutrons in its nucleus than oxygen-16 has.

There are three known stable isotopes of oxygen (8O): 16O, 17O, and 18O. Radioactive isotopes ranging from 11O to 26O have also been characterized, all short-lived.

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Answer:

c

Explanation:

Answer:

C

Explanation:

The respiratory is breathing

The muscular system is the movement

Answer:

Sugar is sucrose or [tex]C_{12} H_{22}O{11}[/tex]

Not sure what yo're looking for... Is it molecular? Solid? Nonsystematically named (sucrose)? C12H22O11?

Answer:

H2O is a covalent compound because of the oxygen and hydrogen, and because they share electrons to sustain stability. Hope this helps :)

Explanation:

It is mean Platinum .

hope to helped.

Answer:

343

Explanation:

Answer:

Explained below

Explanation:

Newton's law of inertia states that An object at rest will remain continue at rest or if in motion, will continue in motion unless in both cases it is acted upon by a net external force.

Now, If two forces on the rope are equal and opposite forces, then the net force on the rope will be zero and it will not move. Thus,balance force is present in the rope and the rope will remain at rest since the net force is zero or it will continue in motion if already in motion without stopping since net force is zero

However, if the forces are acting in the same direction, it will result in an unbalanced force which means that the net force will be equal to the sum of the two forces and this will result in a stronger force than even the 2 individual forces and consequently it will cause the rope at rest to move, or if the rope is in motion, it will cause it to stop.

Answer:

I think sodium it may be wrong soŕry

Answer: sodium,

Explanation:

Answer:

48 g S

Explanation:

Step 1: Define

Molar Mass of Sulfur (S) - 32.07 g/mol

Step 2: Use Dimensional Analysis

[tex]1.5 \hspace{3} mol \hspace{3} S(\frac{32.07 \hspace{3} g \hspace{3} S}{1 \hspace{3} mol \hspace{3} S} )[/tex] = 48.105 g S

Step 3: Simplify

We have 2 sig figs.

48.105 g S ≈ 48 g S

Answer:

ii and iii

Explanation:

Beryllium, Hydrogen and Neon elements will become positive when they become ions. Hence, options I, II and IV are the correct answer.

There are two types of ion:

Cation: When an atom loses electrons, it will form a positive ion known as a cation.

Anion: When an atom gains electrons, it will form a negative ion known as an anion.

Be will become [tex]Be^{+2}[/tex], H will become [tex]H^+[/tex] and Ne will become [tex]Ne^+[/tex]

Hence, options I, II and IV are the correct answer.

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Answer: Most food dyes are acid dyes, so called because they only work in acidic conditions. The vinegar—a solution of 5 percent acetic acid in water—is there to bring the pH low enough that the dye will actually bind.

Explanation: Brainlest please

Answer:

0.228 J/g°C

Explanation:

The specific heat capacity, denoted by c, can be calculated using the formula:

Q = m × c × ∆T

Where; Q = amount of heat

m = mass

c = specific heat capacity

∆T = change in temperature

In this question, m = 9.0g, Q = 127J, T1 = 23°C, T2 = 85°C

Using, Q = m × c × ∆T

127 = 9 × c × (85-23)

127 = 9 × c × 62

127 = 558c

c = 127/558

c = 0.2275

c = 0.228 J/g°C