What kind of engine does a hybrid car use?

Increased air temperatures decrease the salinity of the ocean since more ice is melting adding more fresh water to the oceans, therefore slowing down the great ocean conveyor belt.

Ocean conveyor belt system in which water moves between the cold depths and warm surface in oceans throughout the world.

Increases in temperatures of surrounding entities like ice and an increase in precipitation adds fresh water into the sea, which lower salinity. Seawater with lower salinity is lighter in density and won't sink as much as denser water.

As the seawater gets saltier, its density increases, and it starts to sink. Surface water is pulled in to replace the sinking water, which in turn eventually becomes cold and salty enough to sink. This initiates the deep-ocean currents driving the global conveyer belt.

Hence, option A is correct.

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Answer: 2Na3 (s)-> 2Na (s) +3N2 (g)

Explanation:

look at the keywords then balance equation

Answer:

Answer:

mining of clay limestone and then heated to a certain temperature of 1450⁰ in a cement kiln

Answer:

1.788 C DEGREES

Explanation:

STP is 1 atm at  273.15 K

P1V1/T1  = P2V2/T2

(1)(62.65) / (273.15) = (612/760)(78.31)/T2

T2 = 274.93 K     = 1.788 C

This question involves the concept of excitation energy.

The energy level to which the atom is excited is "4".

The excitation energy of an atom is defined as the energy required by the atom to get excited from one energy level to some upper energy level. Mathematically, it can be given by the following formula:

[tex]E=E_o(\frac{1}{n_i^2}-\frac{1}{n_f^2})[/tex]

where,

E = excitation energy = [tex]\frac{hc}{\lambda} = \frac{(6.63\ x\ 10^{-34}\ J.s)(3\ x\ 10^8\ m/s)}{9.725\ x\ 10^{-8}\ m}=2.04\ x\ 10^{-18}\ J[/tex]

E (in eV) = [tex](2.04\ x\ 10^{-18}\ J)(\frac{1\ eV}{1.6\ x\ 10^{-19}\ J})[/tex] = 12.78 eV

h = plank's constant = 6.63 x 10⁻³⁴ J>s

c = speed of light = 3 x 10⁸ m/s

λ = wavelength = 97.25 nm = 9.725 x 10⁻⁸ m

E₀ = energy of hydrogen atom in ground state = 13.6 eV

[tex]n_i[/tex] = initial orbit = 1

[tex]n_f[/tex] = final orbit = ?

Therefore,

[tex]12.78\ eV=13.6\ eV(\frac{1}{1^2}-\frac{1}{n_f^2})\\\\\frac{12.78\ eV}{13.6\ eV}=1-\frac{1}{n_f^2}\\\\\frac{1}{n_f^2}=1-0.94\\\\n_f^2=\frac{1}{0.06}\\\\n_f=\sqrt{16.67}\\n_f = 4[/tex]

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Answer:

What is the main problem with windmills?

Image result for Guided Practice Old-fashioned windmills are not aerogenerators because

As with all energy supply options, wind energy can have adverse environmental impacts, including the potential to reduce, fragment, or degrade habitat for wildlife, fish, and plants. Furthermore, spinning turbine blades can pose a threat to flying wildlife like birds and bats.

Why are the windmills not moving?

Why do the turbines not spin at times? The most common reason that turbines stop spinning is because the wind is not blowing fast enough. Most wind turbines need a sustained wind speed of 9 MPH or higher to operate. Technicians will also stop turbines to perform routine maintenance or repairs.

Raft spider's light weight and large surface area allow it to walk on water.

Raft spiders are a specie of siders that can move on the surface of water. They are found around the  north-western and central Europe.

The following apply to the raft spiders;

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Answer:

(C3H6)n

it is made up of carbon and hydrogen atoms.

Organic Compounds are named according to IUPAC Nomenclature technique.

The name for the first structure is 3-Bromo-2,4-dimethylhexane.

"International Union of Pure and Applied Chemistry "

Following are the names of given structures ;

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The Antoine's law means that the amount of substance before reaction must be equal the amount of substance after reaction

The equation h2 + cl2 ---> 2hcl correctly models this law.

The mass of  2.75 ×   [tex]10^{-4}[/tex]moles NaOH will be 1.1 x  [tex]10^{-2}[/tex] grams

Recall that:

Mole = mass/molar mass.

Thus, mass = mole x molar mass.

In this case, the mole is  2.75 × [tex]10^{-4}[/tex] moles and the molar mass of NaOH is 40 g/mol.

Mass =  2.75 ×  [tex]10^{-4}[/tex]x 40 = 1.1 x  [tex]10^{-2}[/tex] grams

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Answer:

Answer is option B or:

1.10 x 10–2 g NaOH

Explanation:

hope this helps! (edge)

Answer:

Wave particle duality is most apparent in analyzing the motion of. an electron. A photon of which electromagnetic radiation has the most energy.

Wave particle duality is most apparent in analyzing the motion of an electron.

Wave-Particle duality used to realize the particle and wave nature of light. Based on the idea that light and all other electromagnetic radiation may be considered a particle or a wave nature, in 1923 physicists Louis De Broglie suggested that the same kind of duality must hold to matter.

For example, an electron that produced part of an electric current in a circuit behaves like a particle moving in unison with other electrons inside the conductor. The same electron acts as a wave when it passes over through with a solid crystalline structure and forms a diffraction image.

A photon of which electromagnetic radiation has the most energy.

Thus, Wave particle duality is most apparent in analyzing the motion of. an electron.

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Answer:

Oxygen is the most abundant element in the Earth's crust.

Explaination: It makes up 46% of the mass of the Earths crust.

Answer

The most abundant elements in the human body are oxygen, carbon and hydrogen. Oxygen makes up 65% of the body.

40 g glucose

Explanation:

I have to assume that you are asking about a 2% m/v solution ( Note that specifying 2% in isolation has no meaning )

2% m/v glucose solution is : 2 g glucose in 100 mL solution

Which is ( multiply by 10): 2% m/v = 20 g glucose in 1000 mL ( = 1.0 L) solution

And so 2%m/v = 40 g glucose in 2000 mL or 2.0 L solution

Answer: 40 g glucose.

The noble gas, Helium has only two electrons with the electronic configuration as 1s2. Hence, it does not have a complete octet. and thus, it doesn't follow the octet rule.

An octet is a set of eight. Atoms of each of the noble gases (except helium) have eight electrons in their highest occupied energy levels and the general electron configuration of ns2np6.

Answer: 8.00 grams

Explanation:

The ratio of carbon and hydrogen must be the same.

Answer:

cuz what we are shown in school often fails to foster curiosity in us.

Explanation:

Explanation:

because it have many laws, theory, reaction and many more which is enough to make a student depressed

The molecular formula CH₃CH(CH₃)₂ is the condensed formula for the hydrocarbon methylpropane.

Organic compounds are compounds that are obtained from organic materials.

The most common organic compound are the hydrocarbons,

The hydrocarbons includes the alkanes, alkenes, alkynes, etc.

The given compound CH₃CH(CH₃)₂ is the condensed formula for the hydrocarbon methylpropane.

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Answer:

um Im not sure what the heck that is

Answer:

455 Kcal

Explanation:

2Cl2(g) + 7O2(g) + 130kcal → 2Cl2O7(g)

Rearranging we get,

2Cl2(g) + 7O2(g)  → 2Cl2O7(g) Δ H = 130 kcal . mol⁻¹

So for per mol reaction will be as above.

In case of 7 mols of product, we need 7/2 mole ratio x 130 = 455 Kcal

Answer: [tex]0.654 \text{ J/g} \cdot ^{\circ}\text{C}}[/tex]

Explanation:

[tex]678=(34.57)(c)(55.0-25.0)\\\\c=\frac{678}{34.57(55.0-25.0)} \approx \boxed{0.654 \text{ J/g} \cdot ^{\circ}\text{C}}}[/tex]

Answer:

1.3 M

Explanation:

The formula mass of lithium fluoride is 7+19=26 g/mol. This means that in 52 grams of LiF, there is 2 moles.

Molarity = (moles of solute)/(liters of solution), so the answer is 2/1.5 = 1.3 M

Answer:

Reaction 2

Explanation:

12/30=0.4g/sec

200/(8*60)=0.41667g/sec

Answer:

mass number=126

Explanation:

57+69=126

Elements are a substance that is the smallest unit and can't be divided further. The number of valence electrons determines the reactivity with other elements.

Valence electrons are the electrons that are found in the outermost shell of the atom. These electrons take part in chemical reactions to form chemical bonds.

The number of these electrons will help determine how the unknown element reacts with the other elements chemically as valence electrons are responsible for the chemical bond formation.

Therefore, the valence electrons of the unknown element are used to determine the property.

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Answer:

Explanation:

Givens

The heat capacity for aluminum = 0.89 J/(oC*grams)

The heat capacity for water       = 4.18

m water = 200 grams

t water = 1 degree C

t aluminum = 10 degrees C

Formula

Thermal energy = m * c *   t

Solution

Water

Energy = m * c * t

Energy = 200 * 4.18 * 1

Energy = 836 Joules

Aluminum

Energy = mc t

Energy =100 * 0.89 * 10

Energy = 890

Answer Aluminum has the higher Thermal Energy

Note this is a very tricky question. Usually delta t is given in terms of a change in temperature or heat transfer. This question assumes the substance is at a constant temperature at a short time interval so delta t is a constant amount for that time interval. Be very careful when you think about this, because the laws of thermo dynamics begin to act almost immediately.

The periodic table contains groups and periods that include the elements. For group 1 metal lithium is least likely to lose an electron.

Group 1 metals are the alkali metals that include, Li, Na, K, Rb, and Cs. They show the property exhibited by the metals. The chemical trends of group 1 show that cesium loses an electron more easily than the other elements.

When going down the group the tendency to lose electrons increases as the atomic radius increases. The electron gets far away from the nucleus making it easy to get removed.

Therefore, lithium being the first element of the group has the smallest radii and is least likely to lose an electron.

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Answer:

See explanation.

Explanation:

Heavy metal or something else that is heavily disordered. Would still sound better than cardi b.