HELP 20 Points? thank u guysssss

By 'waves' do you mean sound waves? If so sound waves need to travel through things like solids, liquids and yup gases. When the waves travel they are vibrating the molecules in the matter. By doing this he molecules in solids are packed very tightly.

Answer:

The most common isotope is Bromine-79.

Explanation:

Answer:

Budding is a type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site.

Explanation:

Answer:

Budding is a type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site.

Explanation:

Answer:

D. in butterflies, some are born with more dark colored spots than others.

Explanation:

hope this helps my friend

Answer:

2+2H2O.We already learn it

Answer:

30g

Explanation:

According to this question, a sulfur-containing compound is said to contain 15 percent by mass of sulfur. This means that 15% of the total mass of the compound is the mass of sulfur in the compound.

The question further states that there is a total of 200g of the compound containing sulfur, this means that the mass of sulfur can be calculated this:

Mass of sulfur = 15% of 200g

15/100 × 200g

15 × 2

30g

Hence, there are 30g of sulfur in 200g of the sulfur containing compound.

Answer:

ah+j

Explanation:

Explanation:

Groups are numbered 1–18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.

Answer:

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.

Answer:

Because he likes someone named shelly?

Explanation:

The atoms of elements on the same period on the periodic table typically have the same number of valence electrons.

They have the same electronic configuration.

Valence electrons are electrons in the outermost shell of an atom.

The number of electrons in an atom is a good indicator of elements that might potentially belong to the same group.

Answer:

It would be Density because:

Density= mass/ volume

Density refers to the amount of matter or mass of a substance over a volume

Answer:

Dinitrogen hexabromine

Answer:

i think its speed

Explanation:

Answer:

Velocety and mass

Explanation:

Answer:

312140 LB/CU FT

Explanation:

MULTIPLY

Answer:

See explanation and image attached

Explanation:

Lewis structures dot structures that show the number of valence electron in a molecule. Sometimes, we show bonded electrons using a single line as in the image attached.

Two images are shown. They are the both resonance structures of diazene. The both structures only differ in the arrangement of electrons as we can see from the image.

Answer:

3 5 5 3

Explanation:

Not 100% sure on this question

Answer:

0.16 moles of Ar

Explanation:

One mole is equal to 6.022×10^23 atoms

9.63 x 10^22 atoms * 1 mol/6.022×10^23 atoms = 0.15991364995 moles

Answer:

Substance 2

Explanation:

The stronger the intermolecular forces are, the more energy is required, so the higher the melting point is.

Answer:

Substance 2

Explanation:

I know this because substances with a stronger molecular attraction are less susceptible to melting quicker than substances who have a weaker attraction with each particle. Therefore, substance 2, which melted after substance 1, has a stronger molecular attraction then substance 1.

(copy and paste above if you want)

Answer:

Paper chromatography, in analytical chemistry, technique for separating dissolved chemical substances by taking advantage of their different rates of migration across sheets of paper. It is an inexpensive but powerful analytical tool that requires very small quantities of material.

Explanation:

Hope it is helpful....

Answer:

Magnets can be used to make other magnets and things made of iron move without being touched. Something that has been electrically charged can make other things move without touching them.

Explanation:

(can someone help me with my question?)

Answer:

First Option: B)

Second Option: C)

The pictures below will show the answers. The first picture is the first option, and the second picture is the second option.

Answer:

Question 1 : B

Question 2: C

Explanation:

Hope this helps!

Edge 2022

Answer:

if a non-metal takes two valence electrons then it get negatively charged to form ion.

Answer:

The nonmetal will gain a negative charge of magnitude 2

Explanation:

X be the nonmetal

On gaining two electrons

X^2-

Answer:

d. Cooling & Crystallization

Explanation:

One of the stages of the rock cycle that can take place under mere hours or days is cooling and crystallization.

Cooling and crystallization of lava on the earth surface is a very rapid and fast process.

When magma from within the earth reaches the surface, it becomes lava. Due to the nature of the surface, it cools rapidly and very fast to form very fine grained igneous rocks.

Answer:

lowers salinity

Explanation: I did the quiz on k-12 hope this helps good luck

In an ecosystem with glaciers its melting lowers salinity of the ocean ,delivering fresh water to the ocean.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

https://brainly.com/question/1673533

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Answer: The answer is c

Explanation:

The gases absorb some of the heat from the Sun, holding it to keep it warm near Earth's surface. Hence option C is correct.

Atmosphere is defined as a layer of gas that surrounds a planet and is kept there by the gravitational pull of the planetary body. The atmosphere of the earth shields its people by absorbing dangerous sun rays and preserving a constant temperature. It protects Earth from many space hazards and enables life there. As a result, it is crucial for regulating climate and a source of life on planet.

The majority of the infrared energy from the Sun is absorbed and re-emitted in all directions by greenhouse gas molecules and clouds, creating the greenhouse effect. This causes the lower atmosphere and the Earth's surface to warm.

Thus, the gases absorb some of the heat from the Sun, holding it to keep it warm near Earth's surface. Hence option C is correct.

To learn more about atmosphere, refer to the link below:

https://brainly.com/question/26767532

#SPJ2

Answer:

When iron is heated in air it reacts with oxygen to form the compound iron oxide. Iron is a solid and oxygen is a gas. 5 Draw diagrams to show how the atoms are arranged in iron, oxygen and iron oxide in the circles below their names. Use different colours for the iron atoms and the oxygen atoms.

Explanation:

Explanation:

try solving by using molecular formula.

you've asked this so many times