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A scientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide,
oxygen, and nitrogen. Which term most likely describes what she is measuring?
O final pressure
atmospheric pressure
O combined pressure
O partial pressure

Answer:The amount of energy used or released as heat in a reaction.

Explanation:

hahahahhaahahahahhahacbhad

Answer:

Lots of people set the alarm with the best of intentions, knowing that's the time they need to get up to meet the day's demands. But then the alarm clock seems to ring way before they're ready to rise, so they're hitting snooze and, eventually, running late. Something's got to give.

The key lies inside your body. "An important factor in being able to wake up easily at the desired time in the morning is the timing of one's circadian rhythm, or 'body clock,'" says sleep researcher Leon C. Lack, PhD, professor emeritus in the school of psychology at Flinders University in Adelaide, Australia. Much of what you need to do to wake up on time starts by planning your sleep schedule the day and the evening before — and by making your mornings count.

How do our internal clocks work, and how much can we control them? According to the National Institutes of General Medical Sciences (NIGMS), the body’s master clock, located in the brain, produces and regulates our circadian rhythms, which help determine sleep patterns over the course of a 24 hour period. Environmental signals, such as daylight and darkness, affect circadian rhythms, too. When incoming light hits the optic nerves, information is passed along from the eyes to the brain. When there is little or no light — at night — your clock tells the brain to make more melatonin, a hormone which makes you sleepy.

Our sleep-wake cycles, hormone levels, metabolism, and body temperature are all affected by our circadian rhythms, notes the National Institute of Neurological Disorders and Stroke. When your rhythm is off, you may be at risk for more than just a few groggy days you drag yourself through. Irregular rhythms, the NIGMS notes, have been linked to chronic health conditions, such as obesity, diabetes, depression, bipolar disorder, and seasonal affective disorder.

But there are ways to recalibrate your system to get the sleep you need and wake up feeling refreshed and ready for the day ahead. Physiological and psychological factors come into play, and it’s not always easy to get a good night’s rest or adhere to a schedule so that you consistently go to sleep and get up around the same time each day.

is going on

Answer:

molten hi i eat apples and bananas

Answer:

Background research

Explanation:

Answer:

18 electrons

Explanation:

Answer:

A because this different

Answer:

B

Explanation:

the masses would be equal to the burning (ash, soot, etc.) to the wood and oxygen that were used during the burning since the law of conservation of mass says that matter can not be destroyed nor created.

Answer:

i’m sorry i don’t know

Explanation:

The element which larger species in each pair are Sr ,N3-, Ni, S2-.

A chemical element is a species of atoms, including the pure substance made entirely of that species, that have a specific number of protons in their nuclei. Chemical elements, in contrast to chemical compounds, cannot be reduced by any chemical process into simpler molecules.

A substance made up of only one kind of atom, all of which have the same number of protons, is said to be an element. One famous illustration is pure gold. A ring constructed of pure gold would be composed of countless millions of atoms, each with the same atomic number and 79 protons in its nucleus.

The three categories of elements are metal, non-metal, and metalloid. Metals like sodium, calcium, caesium, and other elements on the extreme left of the periodic table are examples of this.

Thus, The element which larger species in each pair are Sr ,N3-, Ni, S2-.

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The enthalpy change for reaction (2) is 10178 kJ/mol.

The term enthalpy of reaction has to do with the heat that is evolved or absobed in a chemical reaction.

We have the equations;

We can see that equation (2) is obtained from (1) by multiplication using a factor of 2. and also (2) is a reverse of (1). It then follows that the enthalpy change for reaction (2) is 10178 kJ/mol.

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Answer:

10,148 kJ

Explanation:

Answer:

B.

Explanation:

yan sagot ko tnx sa points

Los principales mecanismos de contaminación en el medio ambiente son los procesos industriales que implica combustión,tanto en industrias como automóviles o calefacciones residenciales,que generan dióxido y monóxido de carbono, óxidos de nitrógeno y azufre,entre otros contaminantes.

Answer:

A chemical property is a characteristic of a particular substance that can be observed in a chemical reaction. Some major chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay, and chemical stability.

Explanation:

the physical and chemical has different meaning

and the three examples are to discuss, reverse

and the ability.and to reverse the ability is to provide

the physical and chemical definement.

Answer:

protons=15

electron=15

neutron=16

Answer:

Gravity is the force that pulls all objects in the universe toward each other. On Earth, gravity pulls all objects "downward" toward the center of the planet.

Explanation:

Answer:

Gravity

Explanation:

The force of gravity pulls everything toward the Earth.

Answer:  B

Explanation:  Graph B compares the two temperatures on separate lines so that we can see the comoparison directly, as a function of time.  Not only does the graph quickly answer which condition id most favorable to colony growth, but it also hints at some behaviors that may accelerate growth as time goes on.  Graph C is a possible answer, if the only question is which promotes growth the fastest.   But the questions asks "compare," which Graph B does not allow as well as Graph C.

Answer:

b

Explanation:

answer is b hope helpful

Answer:

hope it's help you

Explanation:

In an isolated system, neither chemical processes nor physical changes can create or destroy mass, according to the principle of mass conservation. According to the law of conservation of mass, the mass of the products and reactants of a chemical reaction must be equal.

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Answer:

A is the correct answer

Answer:

A. The electrons farthest from the nucleus of the atom

Explanation:

Answer:Because you need that certain number and double the number of bread to get the reactants off of the sides

Explanation: 4 bread reactants- 2meat reactants- 2 cheese reactants= 2 products

The reason for the presence of a certain number of reactants on one side is to ensure that the chemical equation is balanced.

In a balanced chemical equation, the number of atoms of each element on the reactant side must be equal to the number of atoms of that element on the product side.

Consider the equation:

[tex]2H_2 + O_2 - > 2H_2O.[/tex]

This equation represents the reaction of hydrogen gas ([tex]H_2[/tex]) with oxygen gas ([tex]O_2[/tex]) to form water ([tex]H_2O[/tex]).

To balance this equation, double the coefficient in front of [tex]H_2O[/tex] on the product side, resulting in 4 hydrogen atoms and 2 oxygen atoms on both sides.

Therefore, having a certain number of reactants on one side is necessary to ensure that a chemical equation is balanced, satisfying the law of conservation of mass.

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Answer:

yes this is I think a true statement

Answer:

AQUACULTURE

*Explanation*

Aquaculture is the controlled process of cultivating aquatic organisms, especially for human consumption. It's a similar concept to agriculture, but with fish instead of plants or livestock. Aquaculture is also referred to as fish farming.

Answer:

chưa hiểu đáp ánkia cho lắm. Nhưng đáp án là ZnO nha

Explanation:

Explanation:

Both have the same temperature, but the large bowl of soup has more thermal energy than the small mug because there is more matter present in the bowl.

The temperature of both the bowl is same , but the thermal energy of large bowl is more than the thermal energy of small bowl.

Thermal energy is defined as the energy of an object or system due to the movement of its molecules and atoms. It is produced with rise in temperature.  

It is also defined as internal energy present in a system in the state of thermodynamic equilibrium by virtue of its temperature.

Thermal energy is also known as heat energy.

Thermal energy is directly proportional to mass of the object.
Thermal energy sources include natural gas, coal, and oil, as well as solar, heat pump electric, and geothermal heat.

Thus, the temperature of both the bowl is same , but the thermal energy of large bowl is more than the thermal energy of small bowl.

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Ca(s) + 2H2O(l) = Ca(OH) 2(aq) + 2H2(g)

The gas K collected is hydrogen gas.

The solution after the experiment is found to be weak base because Ca(OH)2 is sparingly soluble in water forming a weak base.

Answer:

Services raise the pH in the hair to a alkaline state in order to soften and swell the hair shaft. Disulfide, hydrogen, salt. Side bonds are responsible for the strength and elasticity of the hair. Altering these is what make wet setting, thermal styling, permanent waving, curl reforming, and relaxing possible

A pH of 7 is neutral, a pH below 7 is acidic, and pH above 7 is alkaline. ... Chemical Texturizers raise the pH of the hair to an alkaline state in order to soften and swell the hair shaft. This action lifts the cuticle layer, and allows the solution to reach the cortex layer where restructuring takes place.

Explanation:

Answer: 1900

Explanation:

I’m not sure but in 1900 98% of the moths were dark