Some one help pls on number 2 don’t mind the tv

Answer:

Air pollution can also cause headaches, dizziness, and nausea. ... Long-term health effects from air pollution include heart disease, lung cancer, and respiratory diseases such as emphysema. Air pollution can also cause long-term damage to people's nerves, brain, kidneys, liver, and other organs.

Explanation:

Explanation:

Generally, heat flows from a hot environment to a cold (lesser temperature) environment. In this case, the soup is the hot environment and the air is the cold temperature.

Heat would continue to flow from one environment to another until thermal equilibrium is reached. At this thermal equilibrium, both environments would have the same temperature.

Answer:

Therefore, for temperate areas in the northern hemisphere, spring begins on 1 March, summer on 1 June, autumn on 1 September, and winter on 1 December. For the southern hemisphere temperate zone, spring begins on 1 September, summer on 1 December, autumn on 1 March, and winter on 1 June.

Explanation:

The correct order for the seasons of winter, spring, summer, and fall in the Northern Hemisphere is summer, spring and winter.

A season is a subdivision of the calendar year based on variations in the local climate, ecology, and amount of daylight hours. The axial parallel of Earth's inclinator orbit of the Sun causes seasons on Earth.

Seasons are distinguished by differences in the amount of sunlight reaching Earth's surface in temperate as well as polar areas. These fluctuations may lead certain animals to migrate or go into hibernation while others may cause vegetation to fall dormant. The correct order for the seasons of winter, spring, summer, and fall in the Northern Hemisphere is summer, spring and winter.

Therefore, the correct order for the seasons of winter, spring, summer, and fall in the Northern Hemisphere is summer, spring and winter.

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Explanation:

Total distance (d) = 560 meters

Time taken (t) = 25 seconds

Average speed

= d/ t

= 560/ 25

= 22.4 m/s

Hope it will help :)

Answer:

22.4 m/s

Explanation:

Answer:

Water is the answer

Explanation:

Answer:

It decreases because animals only get 10% of the energy they eat.

Explanation:

Answer:

The answer is (A)

Explanation:

When the weather changes, nature also changes because most plants rely on photosynthesis and if they don't get as much light then they can't support as much as they used causing them to shut down parts of the plant.

Answer:

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Answer: According to Charles Darwin's theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.

Answer:

Loosing energy

Explanation:

As the particles movement in gas slows down further when it is cooled

the oxygen atom

Explanation:

Water is a molecular compound consisting of polar molecules that have a bent shape. The oxygen atom acquires a partial negative charge while the hydrogen atom acquires a partial positive charge.

Answer:

Carbon

Explanation:

oxygen is more electronegative than carbon, the electrons will spend more time around the oxygen atom giving it a partially negative charge while the carbon will become partially positive. Some atoms retain lone (unbonded) pairs of electrons when they are part of a covalent complex.

Answer:

A flame test could help by seeing what things it could catch on fire from or the things that could happen with acids etc. I would test the medicine by asking someone who has had it in their life, asking doctors or I would maybe use it myself maybe. (I don’t know about c, sooo sorry)

Answer:

1. Gases can be easily liquefied into very small volumes and stored in liquid form Eg in LPGA cylinders and used in homes.

2. Balloons can be easily filled with air.

The fact that a gas is easily compressible is applied in the colling devices such as air conditioners as well as in the pumping of tyres with air.

Gases are easily compressible because they do not have a definite volume. This is positively applied in many areas of life.

The fact that a gas is easily compressible is applied in the colling devices such as air conditioners as well as in the pumping of tyres with air.

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Answer:

I would say iconic

Explanation:

please correct me if i am wrong

Sodium sulfide compound is an ionic compound. There are 2 Na atoms per 1 Sulfide atom.

Ions with opposing charges are created in ionic compounds when metal atoms transfer electrons to nonmetal atoms. Sodium gives one electron to sulphur in the case of sodium sulphide, resulting in the formation of positively charged sodium ions (Na+) and negatively charged sulphide ions (S2-). The complex is held together in a lattice structure by the electrostatic attraction between these ion pairs with opposing charges. Sodium sulfide's high melting and boiling temperatures, as well as its capacity to conduct electricity when melted or dissolved in water, are indications of its ionic nature.

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Answer:

Explanation:

A chemical formula is the combination of atomic symbols that designate a particular chemical compound, or a substance with two or more different elements.  The formula shows which type and how many of each element makes up that specific compound

Answer:

nuclear power plant

Explanation:

Generation of electricity often involves the use of some kind of material or energy that is consumed as electricity is generated. There are various ways of generating electricity such as;

By burning coal

Use of a radioactive element as nuclear fuel

From wind energy

From water

From the sun, etc

Each process involves the intake of material or energy. The process that goes on in a nuclear power plant requires a radioactive fuel of which uranium is an example.

A nuclear plant uses the least amount of material (such as only 1g of uranium fuel) in electricity generation compared to the tons of coal burnt in order to generate electricity.

Answer:

See explanation

Explanation:

Recall that;

Speed = Distance/time

Distance = Speed * time

Speed = 200 km/h

Time = 4 hours

Distance = 200 km/h * 4 hours = 800 kilometres

Displacement has to do with distance covered in a specified direction, in this case, the direction is towards Zambales.

Hence, the displacement is  800 kilometres towards Zambales.

Answer:

b:  

Jacque could check if the rock layer has fossils in it.

Explanation:

!!!!!! that's what 4 of my teachers said

Complete question is;

What is true of synthesis and decomposition reactions?

A) Synthesis reactions require more energy than decomposition reactions.

B) Synthesis reactions produce more products than decomposition reactions.

C) Synthesis reactions are the opposite of decomposition reactions.

D) Synthesis reactions have fewer reactants than decomposition reactions.​

Answer:

C) Synthesis reactions are the opposite of decomposition reactions.

Explanation:

Correct answer is option C. This is because, Synthesis reactions are defined as those whereby substances are combined together to form larger molecules/compounds. Whereas, decomposition reactions are the opposite due to the fact that they involve the breakdown of two or more substances.

Answer:

B

Explanation:

Pitch is determined by frequency. So if frequency increases, pitch increases and produces a higher sound. If frequency decreases, pitch decreases and produces a lower sound. Frequency and wavelength are inversely related, meaning that if frequency increases, wavelength becomes shorter and vice versa

Answer:

Chemical

Explanation:

Answer:

electropositivity or metallic character.

The ability of an atom to give away electrons and form positive ions i.e cations is known as electropositivity or metallic character.

Answer:

HETEROTROPHIC

Explanation:

Based on nutrition, organisms are classified into autotrophic and heterotrophic. Autotrophic organisms are organisms that are capable of making their own food using either light source (photosynthesis) e.g plants or chemical source (chemosynthesis) e.g some bacteria.

Contrarily, HETEROTROPHIC organisms are those that are unable to synthesize their own food themselves, hence, they rely on other organisms for their energy source. Types of heterotrophism include; saprophytism, predation etc. Most bacteria falls under this heterotrophic category because they are unable to make their own food.

Answer: The new concentration is 20 g/L

Explanation:

According to the dilution law,

[tex]C_1V_1=C_2V_2[/tex]

where,

[tex]C_1[/tex] = concentration of stock solution = 40 g/L

[tex]V_1[/tex] = volume of stock solution = 20 ml = 0.02 L

[tex]C_2[/tex] = concentration of diluted solution= ?

[tex]V_2[/tex] = volume of diluted solution= 40 ml = 0.04 L  

[tex]40g/L\times 0.02L=C_2\times 0.04L[/tex]

[tex]C_2=20g/L[/tex]

Thus new concentration is 20 g/L

Answer:

5.29936 x 10^23 atoms

Explanation:

To do this, we need to find the number of moles in the ring so that we can then multiply that by Avogadro's number (6.022×10^23).

equation for finding moles: [tex]n = \frac{mass}{M_{r} }[/tex]

substitute in the known values: [tex]n = \frac{17.3}{197 }[/tex]

divide to find the value of n: 0.088 mol

Multiply by Avogadro's constant: 0.088 x 6.022 x 10^23

= 5.29936 x 10^23 atoms in the ring.

hope this helps!

According to Avogadro's number, there are 5.289×10²² atoms of gold in 17.3 grams of ring.

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number

In the given problem, number of atoms of gold is found out as, number of atoms=17.3/196.966×6.022×10²³=5.289×10²² atoms.

Thus, there are 5.289×10²² atoms of gold in the ring.

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