Choose the correct one

Answer:

Chemical

Explanation:

Answer:

C

Explanation:

Ocean waves are something we can see. We cannot see Sound waves.

Answer:

the correct answer is B

Explanation:

Sound waves are longitudinal waves.

Answer:

1.75m/s or 6.3km/hr

Explanation:

here,

acceleration (a) = 0.7m/s^2

mass (m) = 30g

time (t) = 2.5s

initial velocity (u) = 0m/s

final velocity (v) = ?

now,

v = u + at

or, v = 0 + 0.7 * 2.5

hence, Final velocity (v) = 1.75 m/s

if u want to convert to km/hr

then,

1.75 * 3.6 (we know that 1m/s = 3.6km/hr)

= 6.3km/hr

Answer:

Up to now, we have presented chemical reactions as a topic, but we have not ... A single-replacement reaction is a chemical reaction in which one element is ... single-replacement reactions will occur between two given reactants. This is ... Use the activity series to predict the products, if any, of each equation.

Explanation:

Answer:indirect causes of disease include genetics, lifestyle, and environmental factors

Explanation:

The indirect disease -causing factors include some genetic factors, infections from other persons etc. Thus options A ,C and D are correct.

There are some factors such as infection from other people make us infected also not by directly originating in ourselves. For example, passive smokers may have respiratory disorders.

Some disease can be generated indirectly from the gene types inherited from parents. These may cause imperfect gene coding and some times trigger cancer.

Infections such as flu, cold, different types of fevers, viral and bacterial infection are able to spread and might affect other two-three people.

Therefore, indirect disease -causing factors includes genetic disorders inherited from parents and infections from environment and hence options A, C and D are correct options.

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Answer:

24

Explanation:

26-2=24 because when an atoms loses 2 electrons it gains 2+ charge

Explanation:

They are both in shell 5 and subshell s.

Since s only has 1 orbital, they also have the same orbital number.

But they have different magnetic spins.

Hence 3 out of 4 quantum numbers are in common.

Answer:

H20 is a compound so it's the answer

Explanation:

Have a good day

Answer:

d

Explanation:

Answer:

carbon

Explanation:

i just googled it

Answer:

Chemical change

Explanation:

Because it will be 2 mixtures of each substances making it 1 substance, and 1 change.

Answer:

Are barium and chlorine a metal and nonmetal?

Explanation:

I had the same question, and my class reviewed the test and this was the answer to this question.

Answer:

During the daytime, when the sunlight hits the land surface, it is absorbed, causing the surface to heat up (think about how hot pavement gets on a sunny, summer day). The hot surface then heats up the air near the surface, causing it to rise

Explanation:

Answer:

When sunlight reaches the ground surface during the day, it is absorbed, allowing the surface to heat up (think about how hot pavement gets on a sunny, summer day). The air near the hot surface is then heated, allowing it to rise.

Explanation:

Answer:

the unidentified animal  looked like a slug, it looked like it lives or can be in water, the body of the unidentified animal is purple, it seems to have an orange spikes coming out of it's backs.

Vanadium (V)

Vanadium is the only one in the 4th period here so

Answer:

The Outer-most Electron shell contains the valence electrons.

Bonus Info:

Valence Electrons are used by atoms to make ionic bonds.

Answer:

Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell. We can write the configuration of oxygen's valence electrons as 2s²2p⁴.

Explanation:

ur welcome

i was doing this in school and i watched a video

Answer:

the nominal density of a golf ball is to be approximately 0.65 ounces per cubic inch.

Explanation:

Answer:

Nice! If only....

Explanation:

Answer:

omg lol what even is this

Explanation:

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. ... A covalent bond involves a pair of electrons being shared between atoms. Atoms form covalent bonds in order to reach a more stable state.

Answer:

Argon

Explanation:

I'm pretty sure it's argon.

Answer:

C2S7

Explanation:

To solve this we must be knowing each and every concept related to  chemical formula. Therefore, the chemical formula for the given molecule  dicarbon hepta sulfide is C[tex]_2[/tex]S[tex]_7[/tex].

A chemical formula is a scientific notation that uses atomic symbol and numerical subscripts to represent the number and types of elements contained in a molecule. A chemical formula seems to be a concise written description of an existing three-dimensional molecule.

A chemical formula characterizes a material to the atomic level. There are three sorts of chemical formulas: empirical, molecular, and structural. The chemical formula for the given molecule dicarbon hepta sulfide is C[tex]_2[/tex]S[tex]_7[/tex].

Therefore, the chemical formula for the given molecule  dicarbon hepta sulfide is C[tex]_2[/tex]S[tex]_7[/tex].

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Answer:

d

Explanation:

i think it's d, but I'm not sure. my answer is a little different but maybe i used a different number for the density of lead (11.35g/cc)

Answer:

Cell, Tissue, Organ, Organ system, Organism

Answer:

The pressure of N₂ gas in cylinder B when compressed at constant temperature increases due to the increase in the frequency of collision between the gas molecules with themselves and with the wall of their container caused by a decrease in volume of the container.

Explanation:

Gas helps to explain the behavior of gases when one or more of either temperature, volume or pressure is varying while the other variables are kept constant.

In the gas cylinder B, the temperature of the given mass of gas is kept constant, however, the volume is decreased by pushing the movable piston farther into the cylinder. According to the  gas law by Robert Boyle, the volume of a given mass of gas is inversely proportional to its pressure at constant temperature. This increase in pressure is due to the increase in the frequency of collision between the gas molecules with themselves and with the wall of their container caused by a decrease in volume of the container. As the cylinder becomes smaller, the gas molecules which were spread out further become more packed closely together, therefore, their frequency of collision increases building up pressure in the process.

In terms of collisions between gas molecules and the walls of the container, the reason why pushing the movable piston farther into cylinder B at constant temperature would increase the pressure of the N2 gas is due to the fact that;

The image showing the two cylinders are missing and so i have attached it.

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Answer:

yuh 100% true dude

Explanation:

...............

Answer:

A control group is someone who takes control over something so a tyrant or a dictator.

Explanation:

If this isnt what your looking for let me know, there wasnt alot of context.

Answer: a group that helps you control something

Explanation: like a surport group but for addictions maybe

Additional information

Relative atomic mass(Ar) : A=7, G=16

The empirical formula : A₂G

Given

3.5g of element A

4.0g of element G

Required

the empirical formula for this compound

Solution

The empirical formula is the smallest comparison of atoms of compound forming elements.

The empirical formula also shows the simplest mole ratio of the constituent elements of the compound

mol of element A :

[tex]\tt mol=\dfrac{mass}{Ar}\\\\mol=\dfrac{3.5}{7}=0.5[/tex]

mol of element G :

[tex]\tt mol=\dfrac{4}{16}=0.25[/tex]

mol ratio A : G = 0.5 : 0.25 = 2 : 1

Answer:an unbalanced force

Explanation: because the forces are uneven one is stronger

Answer:

A. Li-O

Explanation:

The highest polarization will occur between the atoms of  Li-O because they have the most electronegativity difference between them.

Polarization occurs when there is a separation of charge between the atoms of heteronuclear molecules.

The electronegativity gives the tendency for an atom to attract the electrons within the bond pair to itself.

To know the atom with most polarization, it has to be one with highest electronegativity difference. Li and O have the highest difference. Also, since the bond is between a metal and non-metal, it is obviously the most polarized.