True of false. A d-orbital lies in the x, y, and z area defined by the geometric axis of space.

ycow [4]

Answer : Option A) The body breaks down the molecules into molecules they need.

Explanation : Nutrient molecules are important because the body breaks the nutrient molecules and convert it into the absorb-able molecule that can generate energy for doing the activities of the body.

Nutrients are taken in the body in the form of carbohydrates which later on gets broken into glucose molecules and generates energy, proteins which is decomposed into amino acids, fats breaks down into fatty acids, minerals and salts are also nutrients which is essential nutrient for body.

4 0

3 years ago

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A sample of argon has a volume of 1.2 L at STP. If the temperature is increased to 21 c and the pressure is lowered to 0.80 atm,

Nuetrik [128]

Answer:

The new volume is 1.62 L

Explanation:

Boyle's law says:

"The volume occupied by a given gas mass at constant temperature is inversely proportional to the pressure." It is expressed mathematically as:

Pressure * Volume = constant

o P * V = k

Charles's law is a law that says that when the amount of gas and pressure are kept constant, the ratio between volume and temperature will always have the same value:

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

Gay-Lussac's law indicates that when there is a constant volume, as the temperature increases, the gas pressure increases. And when the temperature is decreased, the gas pressure decreases. So this law indicates that the quotient between pressure and temperature is constant.

Gay-Lussac's law can be expressed mathematically as follows:

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

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

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

Having an initial state 1 and a final state 2 it is possible to say that:

$\frac{P1*V1}{T1} =\frac{P2*V2}{T2}$

Standard temperature and pressure (STP) indicate pressure conditions P = 1 atm and temperature T = 0 ° C = 273 ° K. Then:

P1= 1 atm
V1= 1.2 L
T1= 273 °K
P2= 0.80 atm
V2= ?
T2= 21°C= 294 °K

Replacing:

$\frac{1 atm* 1.2 L}{273K} =\frac{0.8 atm*V2}{294K}$

Solving:

$V2=\frac{1 atm*1.2 L}{273 K} *\frac{294 K}{0.8 atm}$

V2= 1.62 L

The new volume is 1.62 L

8 0

2 years ago

The heat of vaporization of carbon tetrachloride (CCl4) is 197.8 J/g. How much energy is absorbed by 1.35 mol CCl4 when it vapor

const2013 [10]

Energy absorbed from changing the phase of a substance from the liquid phase to gas phase can be calculated by using the specific latent heat of vaporization. Calculation are as follows:

Energy = 1.35 mol CCl4 ( 153.81 g / 1 mol ) x 197.8 J/g

Energy = 41071.88 J

5 0

3 years ago

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¿qué propiedades tomó en cuenta John Newlands para clasificar los elementos de la tabla periódica?

liubo4ka [24]

Answer:

John Newlands propuso su ley de octavas en 1864 en la que organizó todos los elementos conocidos en ese momento en una tabla en orden de masa atómica relativa. Cuando hizo esto, descubrió que cada elemento era similar al elemento ocho lugares más adelante.

8 0

2 years ago

Critically evaluate the role of human beings in perpetuating climate change

timurjin [86]

Human activities contribute to climate change by causing changes in Earth's atmosphere in the amounts of greenhouse gas- es, aerosols (small particles), and cloudiness. The largest known contribution comes from the burning of fossil fuels, which releases carbon dioxide gas to the atmosphere.

8 0

3 years ago

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True of false. A d-orbital lies in the x, y, and z area defined by the geometric axis of space.​

True of false. A d-orbital lies in the x, y, and z area defined by the geometric axis of space.