Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide.
Which statement best describes these three components of air?
O Oxygen, nitrogen, and carbon dioxide are all classified as pure substances.
Oxygen, nitrogen, and carbon dioxide cannot react with another substance.
Oxygen, nitrogen, and carbon dioxide are chemically bonded to one another.
O Oxygen, nitrogen, and carbon dioxide can be classified as elements.
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Answer:

 80.0 g Na and 20.0 g N2.

Explanation:

This means the limiting reactant determines the maximum mass of the product formed.

Answer:

a coiled spring

Explanation:

Answer:

Krypton

Explanation:

Answer:

C

Explanation:

trust me :)

Answer:

The diameter of a mercury atom is 151 pm and the diameter of the planet Mercury is 4,879.4 km.

Answer:

As the warmer material rises, it also cools, eventually pushed aside by warmer rising material and sinking back toward the core. Mantle material flows slowly, like thick asphalt or mountain glaciers. While the mantle material remains solid, the heat and pressure allow convection currents to move the mantle material

Answer:

what

Explanation:

i d k what this question is

CFCs are 1000-15000 times powerful as compared to greenhouse gas such as CO2.

Chlorofluorocarbons are present in less amount or less abundant than carbon dioxide gas in the atmosphere but they are 10,000 times more powerful as a greenhouse gas.

These CFCS gases can remain in the atmosphere for more than 45 to 100 years. CFCS gases greatly damaged the ozone layer by reacting with it that leads to increase in the diseases such as skin cancer so we can conclude that CFCs are more powerful as compared to carbondioxide gas.

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Answer:

no

Explanation:

s ss s s s s s s s s s s s s ss s s s s dkfkf f f f f f f f

Answer:

International Union of Pure and Applied Chemistry (IUPAC) justified ways how to name organic compounds [ hydrocarbons ].

Oxygen has only a molecular name which is dioxide

The heat produced by hydrolysis of 65 kg of ATP is -6.8 kJ.

Let's consider the thermochemical equation for the hydrolysis of ATP.

ATP + H₂O ⇒ ADP + Pi   ΔG = -57 kJ/mol

We will convert 65 kg of ATP to moles using its molecular weight (507.18 g/mol).

[tex]65 \times 10^{3} g \times \frac{1mol}{507.18g} = 1.2 \times 10^{2} mol[/tex]

57 kJ of heat are released by the hydrolysis of 1 mole of ATP. The heat released by the hydrolysis of 1.2 × 10² moles of ATP is:

[tex]1.2 \times 10^{2} mol \times \frac{(-57kJ)}{1mol} = -6.8 \times 10^{3} J = -6.8 kJ[/tex]

-6.8 kJ is the heat produced by hydrolysis of 65 kg of ATP.

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Answer:

Tight monetary policy is an action undertaken by a central bank such as the Federal Reserve to slow down overheated economic growth. Central banks engage in tight monetary policy when an economy is accelerating too quickly or inflation—overall prices—is rising too fast.

Answer:

25J

Explanation:

Kinetic energy = (mv^2)/2. So (.5)(10^2)/2 = 25 J

Answer:

nCl= 0,062x3/2=0,093(mol)

Explanation:

Convection currents are largely influenced by air temperature. A low-pressure area is produced when air is heated because it becomes less dense and rises.

For instance, the air above the Earth heats and rises as its surface warms from the sun. This air may continue to rise while cooling and producing cumulus clouds if the conditions allow.

Climate-affecting wind patterns are driven by convection currents. Convection currents are used to shift air masses. There are two different kinds of air masses: warm and cold. From higher latitudes to lower latitudes, cold air masses travel.

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The model of Neils Bohr postulates that electrons in atoms are found in specific energy levels. Transition from a higher to a lower energy level produces an emission spectrum characteristic of elements.

According to Bohr's model of the atom, an electron in atom exists in distinct energy levels. Electrons can be promoted from lower to higher energy levels when they absorb energy. The electrons are unstable in this higher energy excited state hence they quickly return to the ground state emitting energy. This emission is characteristic of elements.

The following statements are true based on the Bohr model;

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Answer:

D) Repeating units.

Explanation:

Polymers are large macromolecules which are made up of many repeating structural units called monomers :)

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Answer:

B. Living organism can be created from nonliving matter

Explanation:

The theory of spontaneous generation states that life could come from non-living things.

movement of water from high potential to low potential

Answer:

Advantages of synthetic detergents over soaps: Detergents can work with hard water too while soaps cannot. Synthetic detergents are stronger cleansing agents than soaps.

Explanation:

sorry if I'm wrong

Think of it like theory and physics.

A theory is an idea that needs to be tested.

Scientific law is something that cant be proven wrong.

Answer:

A.

Explanation:

hope it helps

Answer:

First make sure the both weights have the same units.

Take your experimental yield and divide it by the theoretical yield.

Multiply this value by 100 to find the percent yield.

Explanation:

For the Average. Add up the two percent yields that you found and divide by 2.

Answer:p=m/v

p=(292.2-130.2)/200

p=0.8100g/ml

Explanation:

Density of a substance is the ratio of its mass to volume. The density of the oil filled in a  200.01 ml beaker is 0.815 g/ml.

Density of a substance is the mass  per volume. Thus we het how much of its particles are located per one unit of volume.

Mathematically density can be written as mass/ volume. The mass of the beaker containing oil is given as 293.2 g. The mass of beaker itself is 130.2 g. Hence, mass of oil is 293.2 - 130.2 = 163 g.

Volume of the oil is 200 ml. Thus density is 163 g/200 ml = 0.815 g/ml.

Hence, the oil in the beaker with 200 ml volume and 163 g mass have a density of 0.815 g/ml.

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Answer:

To convert 100.0 g of water at 20.0 °C to steam at 100.0 °C requires 259.5 kJ of energy.

The amount of heat which is required for a phase change of a substance without any change in temperature is known as latent heat. Here the amount of heat required is 10,800 calories.

The heat capacity of a substance or a system is defined as the amount of heat required to raise its temperature through 1°C. It is denoted by C. The specific heat capacity is the amount of heat required to raise the temperature of 1 gram of the substance through 1°C.

The equation to calculate the heat required is:

Q = mc (T₂ - T₁) + mL₁

L = Latent heat of vaporization of water

m = mass

c = specific heat capacity

T₂ = Final temperature

T₁ = Initial temperature

T₂ - T₁ = 100 - 100 = 0°C

Q = 20 g × 1 cal /g°C × 0°C +  20 g × 540 cal/g

Q = 10,800 calories

Thus the amount of heat required is 10,800 calories.

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Answer:

strongest magenetic field in the solar system

Explanation:

The Earth can be divided into one of two ways – mechanically or chemically. Mechanically – or rheological, meaning the study of liquid states – it can be divided into the lithosphere, asthenosphere, mesospheric mantle, outer core, and the inner core.

Explanation:

Answer:..,.,

Explanation:88.,,'

Answer:

Meteorology is the science dealing with the atmosphere and its phenomena, including both weather and climate

Answer: Meteorology I believe

Explanation: