who can help me this please

choose the correct answer ​

This is probably something you learned in elementary school: Rivers almost never flow in a straight line. Instead, they twist and turn along serpentine paths

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curved

Answer:

7N to the right

Explanation:

thats very nice lol, things stuck in amber are very cool

Answer: Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive. hope this helps

Explanation:

When a dominant trait is present it will always show. For example long tails are dominant. (Ll and LL will both result in long tails). For recessive traits you need two of them for the trait to show. For example short tails are recessive. (You HAVE to get ll for the short tail trait to show in the offspring.

Answer:

2. About 138 g of KI will dissolve in 100 g of water at 10°C

3. 34.5 g of KI will dissolve in 25 g of water

4. The solution is not saturated but is unsaturated

Explanation:

From the graph:

1. KI is more soluble than KCl at 10°C because approximately 138g of KI dissolves at 10°C compared to 30 g of KCl per 100 g of water

2. About 138 g of KI will dissolve in 100 g of water at 10°C

3. 138 g of KI dissolves in 100 g of water at 10°C

In 25 g of water which is 1/4 × 100 g of water, 138/4 g = 34.5 g of KI will dissolve

Therefore, 34.5 g of KI will dissolve in 25 g of water

4.At 20 °C, a saturated solution of NaNO₃ will contain about 88 g of NaNO₃ in 100 g of water.

The solution prepared by the chemist contains 45 g of NaNO₃ in 100 g of water at 20 °C. The amount of solute present in the solution is less thanthe solvent can dissolve at that temperature, therefore, the solution is not saturated.

Answer: Hard

Explanation:

The upper part of the mantle is hard as it contains thick rock layers. The mantle's upper layer and the crust make up a brittle and rigid rock that's referred to as the Lithosphere.

The upper mantle starts below the Earth crust and then stops at the start of the lower mantle. We should note that the upper mantle results in the movement of the tectonic plates.

Answer: This is the magic element for everything on Earth. All life on Earth depends on carbon (C). It is in nearly every biological compound that makes up our bodies, systems, organs, cells, and organelles. When you breathe out, there is a lot of carbon dioxide (CO2).

Explanation:

Answer:

Like Carbon dioxide? or just like carbon? well anyway we breath in oxygen and breath out carbon the carbon goes into the air and gets re-cleaned turned into oxygen again. And also thousands of cars that run everyday going places let out tons of carbon into the the air every minute. (aka which is bad for human society, considering there's probably more carbon in the air then there is oxygen.)

Explanation:

So yes carbon does apply in everyday life. By the way the other person is right too. :)

Answer:

The sugar particles are so small that they have dissolved in the water, and can easily pass through the filter.

Answer:

Sugar can not be separated due it has very fine particles.

Explanation:

When we use to separate sugar with salt they both are dissolved with the water.

Answer:

b

Explanation:

if there is a net force acting on an object, the object will have an acceleration and the objects velocity will change

Answer:

compaction and cementation

Explanation:

sedimentary rock is layered rock, in order to become sedimentary it most be compacted to form layers and cemented to become hard. This is what i think. Hope i can help :)

Answer:

f=ma

40=m*8

m=5kg

another object of same mass is added

=>m=5+5=10kg

f=10*8=80N

Explanation:

Answer:

I would say try hinting it to her, not in an obvious way but kind of flirt. Make sure to be yourself!

Answer:

2.108x10²³ atoms

Explanation:

In order to convert from moles (of any substance) to atoms (or molecules), we need to use Avogadro's number: It is the number of units in one mol.

In one mol there are  6.023x10²³ atoms.

0.35 mol * 6.023x10²³ atoms/mol = 2.108x10²³ atoms

Thus, in 0.35 moles of carbon there are 2.108x10²³ atoms.

Answer:

Carbon dioxide is a gas because the particles surrounding it are more spread out and free from each other. Water is a liquid because the particles are partially spread out and have a medium space to move around. And due to the room temperature, salt's particles can either be hot and move rapidly, or be cold and not move rapidly.

Explanation:

Answer:

Ability to move

Must be able to eat

grow and develop

reproduce

respond to environment

taking in food

Explanation:

Hope this helped! Have a good day!

Answer:

C

Explanation

His greatest contribution is the atomic model

Answer:

A. Water

Explanation:

Virtually every known substance can be referred to as MATTER, as long as it has weight and occupies space. Matter can exists in three different forms namely: solid, liquid and gaseous states.

However, each state of matter has its own unique property that characterizes it. WATER is the only matter that can exists in the three different states as follows:

- LIQUID - WATER

- SOLID - ICE

- GASEOUS - STEAM OR VAPOUR.

Answer: 2.3% :)

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

Answer: 34%

Explanation:

Answer:

5.06atm

Explanation:

Using the combined gas law equation;

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (atm)

P2 = final pressure (atm)

V1 = initial volume (Litres)

V2 = final volume (Litres)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question;

P1 = 1.34 atm

P2 = ?

V1 = 5.48 L

V2 = 1.32 L

T1 = 61 °C = 61 + 273 = 334K

T2 = 31 °C = 31 + 273 = 304K

Using P1V1/T1 = P2V2/T2

1.34 × 5.48/334 = P2 × 1.32/304

7.34/334 = 1.32P2/304

Cross multiply

334 × 1.32P2 = 304 × 7.34

440.88P2 = 2231.36

P2 = 2231.36/440.88

P2 = 5.06

The final pressure is 5.06atm

Answer:

Antimony

Explanation:

Number of moles = 9.51 mol

Mass= 1157.9376 g

The identity of an element is obtained from it's Molar mass.

This is given by the equation;

Molar mass = Mass / Number of moles

Molar mass = 1157.9376 g / 9.51 mol

Molar mass = 121.76

The only element with molar mass of 121.76 is Antimony

I think the first option

Explanation:

Sorry If I was wrong.

Answer:

Known as the "king of the jungle" or the "king of beasts," lions are at the top of the food chain, and they hunt and eat other animals to survive. Their niche in the ecosystem allows them to help with other animal population control and prevent the spread of disease.

Explanation:

Answer:

C

Explanation:

A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change.

Answer: The green copper (II) carbonate [tex](CuCO_3)[/tex] changes to black copper oxide [tex](CuO)[/tex]

[tex]CuCO_3(s)\stackrel{\Delta }\rightarrow CaO(s)+CO_2(g)[/tex]

Explanation:

Decomposition is defined as the chemical reaction in which a single compound gives two or more simple substances. It requires energy to break the bonds between reactants, thus is an endothermic process.

Thermal decomposition uses heat for decomposition.

The chemical equation for thermal decomposition of copper (II) carbonate is:

[tex]CuCO_3(s)\stackrel{\Delta }\rightarrow CaO(s)+CO_2(g)[/tex]

The green copper (II) carbonate [tex](CuCO_3)[/tex] changes to black copper oxide [tex](CuO)[/tex]