Mario uses a hot plate to heat a beaker of 50mL of water. He used a thermometer to measure the

temperature of the water. The water in the beaker began to boil when it reached the temperature of

100'C. If Mario completes the same experiment with 25mL of water, what would happen to the boiling

point?

a) The water will not reach a boil.

b) The boiling point of water will increase.

c) The boiling point of water will decrease.

d) The boiling point of water will stay the same.

Answer:

The poster should include:

 TITLE: Creative name of superhero.

 DESCRIPTION OF ELEMENT SUPERHERO (2 PARAGRAPHS):

This section should include a brief description of how your superhero acquired, used, or lived

with their element power. You may want to describe where does your superhero element lives

(where in nature can it be found). What are his/her superpowers? Does your superhero

element have a hideout? What are his/her strengths? What is his/her weakness? Who is

his/her arch nemesis (evil super villain)? What kind of super suit does your superhero have?

 5 FACTS:

This section should include at least 5 fun facts about your element. You can choose to

describe facts that illustrate where your element is found in nature. You may also wish to

describe what is your element used for. You may address what are characteristics of your

element or what are important uses of your element. For example, can your element be made

into something useful or can your element combine with other elements to make something

totally different.)

 ATOMIC DRAWING

Include the atomic structure of your element with correct labeling of its protons neutrons,

electrons. Make sure your drawing has the correct number of protons, neutrons, electrons.

 DRAWING OF YOUR ELEMENT SUPERHERO

This section should include a drawing (in color) of your Element Superhero on a clean sheet of

WHITE paper. You may want to draw your Element Superhero fighting his nemesis (super

villain). Or you may want to draw your Element Superhero using his special powers.Explanation:

Answer:

Evidence is best explained as C) Data that supports a hypothesis.

Answer:

C

Explanation:

C because evidence always supports a theory or hypothesis.

The term mole concept is used here to determine the theoretical yield of H₂. The theoretical yield of H₂ is 1.75 g and the moles of Fe is 10.8. The correct options are D and C.

One mole of a substance is defined as that amount of it which contains as many particles or entities as there are atoms in exactly 12 g of Carbon - 12. The equation used to calculate the number of moles is:

Number of moles (n) = Given mass / Molar mass

The theoretical yield of H₂ is:

1. 3.5 × 1/2 = 1.75 g

2. The moles of Fe needed to react with 8.1 mole of O₂ is:

8.1 × 4 / 3 = 10.8 mole

Thus the correct options are D and C.

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Answer:

climate:the weather conditions prevailing in an area in general or over a long period.

2 main factors: temperature and precipitation

Explanation:

Explanation:

well, I dunno if I'm correct but I think it's a physical change cause no new substance is formed

Answer:

q = mC∆T

q = heat = ?

m = mass = 6.30 g

C = specific heat = 0.385 J/g/deg

∆T = change in temperature = 32-20 = 12º

q = ((6.30 g)(0.385 J/g/deg)(12 deg) = 29.1 J (to 3 significant figures)

Explanation:

nitric oxide reacts with hydrogen peroxide to release large amounts of chemiluminescence with the characteristics of the highly cytotoxic species, singlet oxygen.

This is supported by the observation that when nitric oxide was added to a superoxide generating system, catalase inhibited the production of singlet oxygen while superoxide dismutase enhanced it

The outside temperature when the tire pressure drops from 32 psi to 28 psi is approximately -5.16°C.

To calculate the outside temperature (in °C) when the pressure of the tire drops from 32 psi to 28 psi, we can use the ideal gas law, which relates the pressure, volume, temperature, and number of moles of a gas. The formula for the ideal gas law is:

PV = nRT

where:

P is the pressure of the gas (in atmospheres)

V is the volume of the gas (in liters)

n is the number of moles of gas

R is the universal gas constant (0.08206 L·atm/(mol·K))

T is the absolute temperature of the gas (in Kelvin)

Assuming that the volume, number of moles, and gas do not change, we can write:

P1/T1 = P2/T2

where P1 and T1 are the initial pressure and temperature, and P2 and T2 are the final pressure and temperature.

Converting the given temperatures to Kelvin, we have:

T1 = 32°C + 273.15 = 305.15 K

T2 = ? (in Kelvin)

Substituting the pressures, we get:

32 psi / 305.15 K = 28 psi / T2

Solving for T2, we get:

T2 = (28 psi / 32 psi) x 305.15 K ≈ 267.99 K

Converting the temperature to Celsius, we get:

T2 = 267.99 K - 273.15 = -5.16°C

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The following mixtures of aqueous solutions in order of increasing pH:-

B) 15 mL of 0.10 M HA+5 mL of 0.10 M NaA

C) 10 mL of 0.10 MHA + 10 mL of 0.050 M NA

E) 10 mL of 0.10 M HA+ 10 mL of 0.10 M NA

D) 10 mL of 0.050 MHA+ 10 mL of 0.10 M NA

A) 5 mL of 0.10 M HA + 15 mL of 0.10 M NaA

The term pH, which originally stood for "potential of hydrogen," is used in chemistry to describe how acidic or basic an aqueous solution is. The pH values of acidic solutions are typically lower than those of basic or alkaline solutions. Acidity is indicated by pH values below 7, whereas baseness is shown by pH values above 7. The pH formula is displayed above. The hydronium concentration's negative log base 10 is known as pH. The pH is a logarithmic indicator of how many hydrogen ions are present in a solution.

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Magnesium is more reactive.

Answer:

It is like an arch because it bends horizontal just like we do and the legs of the arch support the stone like our feet and legs support the weight of us.

Explanation:

Answer:

light

Explanation:

Have a nice day

Answer:

light

Explanation:

The molecularity of the rate-determining step in the proposed mechanism is bimolecular (molecularity of 2).

In the proposed mechanism:

1. h₂ + 2no → n₂o + h₂o

2. n₂o + h₂ → n₂ + h₂o

The molecularity of the rate-determining step is identified by determining the slowest step of the reaction. The slowest step is often referred to as the rate-determining step as it limits the overall reaction rate.

In this reaction, it appears that the second step ( n₂o + h₂ → n₂ + h₂o) is the rate-determining step since it involves the reactants in the proposed reaction.

The molecularity of a reaction refers to the number of reactant molecules involved in the slowest step. In the rate-determining step, we see that one molecule of n₂o and one molecule of h₂ are involved.

Therefore, the molecularity of the rate-determining step in the proposed mechanism is bimolecular (molecularity of 2).

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Answer:

MARK AS BRAINLIST

Explanation:

density = mass/volume

mass=25.3

density =10.5

10.5=25.3/v

v=25.3/10.5

=2.40

Answer:

d

hydrogen is an exception to the octet rule because Lewis theory helps us understand why elemental hydrogen and oxygen exists as diatomic molecules

The answer is C. The hydrogen and oxygen poles have slight opposite charges.

hope this helps <3

Answer:

1.Because my coffee was too cold, I heated it in the microwave.

2. Although he was wealthy, he was still unhappy.

3. She returned the computer after she noticed it was damaged.

Explanation:

..

The researchers may use statistical analysis to estimate the half-life and evaluate the substance's pharmacokinetic properties, such as absorption, distribution, metabolism, and elimination.

The variable that the pharmaceutical company is studying in this experiment is a pharmacokinetic variable known as the "half-life" of the substance. The half-life represents the time it takes for the concentration or amount of a substance in the bloodstream to decrease by half.

In this case, the researchers are administering 100mg of the substance orally to the subject and then measuring the time it takes for half of the substance to be eliminated from the bloodstream. The half-life is a crucial parameter in pharmacokinetics as it provides information about the rate of elimination or clearance of the substance from the body.

The half-life variable is a quantitative variable because it represents a measurable quantity, specifically the time duration. It is a continuous variable as it can take any positive value on the time scale, depending on the specific substance being studied. The researchers may use statistical analysis to estimate the half-life and evaluate the substance's pharmacokinetic properties, such as absorption, distribution, metabolism, and elimination.

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Answer:

neutralization reaction

The  empirical formula will be SO3.

The empirical formula is typically applied to simply display the atoms that make up a molecule. This is helpful if you want to quickly identify the pieces you're working with. When determining the number of atoms in a chemical, the molecular formula is most helpful.

ratio S:O = 40.05:59.95 that is nearly 40:60

molar mass of S = 32

moles = mass/molar mass

moles = 40/32 = 1.25

molar mass of O = 16

moles = mass/molar mass = 60/16 = 3.75

molar ratio of S:O = 1.25:3.75 = 1:3

The empirical formula will be = 1: 3

that is SO3

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To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas. The equation is:
P1V1/T1 = P2V2/T2
where P1, V1, and T1 are the initial pressure, volume, and temperature, and P2, V2, and T2 are the final pressure, volume, and temperature.

First, we need to convert the temperatures to Kelvin by adding 273.15 to each:
T1 = -10°C + 273.15 = 263.15 K
T2 = 20°C + 273.15 = 293.15 K
Next, we can plug in the values we know:
P1 = 900 mmHg
V1 = 584 mL
T1 = 263.15 K
V2 = 300 mL
T2 = 293.15 K
We want to solve for P2, so we can rearrange the equation:
P2 = (P1V1T2)/(V2T1)
Plugging in the values gives:
P2 = (900 mmHg)(584 mL)(293.15 K)/(300 mL)(263.15 K)
Simplifying and rounding to 4 significant figures gives:
P2 = 2,740 mmHg

Therefore, the pressure that would have to be imposed on 584 mL of helium at -10°C and 900 mmHg pressure to reduce its volume to 300 mL at a temperature of 20°C is 2,740 mmHg.

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Answer: B. The actual mechanical advantage of the ramp.

Explanation:

The professor saying that the ramp SHOULD have a mechanical advantage of 3 indicates that that would be the ideal mechanical advantage. Since Rubia calculated it to be 2.8, that means that it is the acutal mechanical advantage. The actual advantage will be reduced from the ieal due to things like friction.

Answer:

72N

12m/s

Explanation:

f=ma

=6×12

=72N

a=f÷m

=72÷6

=12m/s

Answer:

carbon-12 is not radioactive

Explanation:

The measurement of the age of dead carbon based life forms requires the use of a radioactive isotope hence it is often referred to as radiocarbon dating.

Carbon-12 and Carbon-14 occur together in living things.The half life of Carbon-14 is about 5670 years.

Hence, since Carbon-12 is not radioactive, it can not be used to measure the age of dead carbon based materials.

Answer:

A heat engine is a type of engine, (like the motor in a car) that produces ... Heat engines do just the opposite; they take the energy from being warm ... using a flame to heat water into steam, then using the steam to turn a turbine. ... is the percentage of energy input that the engine can convert to useful work.

Explanation:

hope this helps

and i hope its right

The conclusions tell why the data support or reject the hypothesis. The correct option is A

The final step in the scientific method is to draw conclusions from an experiment. They provide a summary of the experiment's findings and a discussion of how the data confirm or refute the hypothesis.

The conclusions ought to go through the experiment's limitations and recommend any potential future studies.

Therefore, The conclusions tell why the data support or reject the hypothesis.

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