please help..............

Answer:

None have backbones

No cell walls

Multicellular

Includes radial or bilateral body symmetry.

Explanation:

Answer:

C₃H₈O₃

Explanation:

Let's assume we have 100 g of said compound. Then we would have:

Now we convert those masses into moles, using their respective atomic weights:

Then we divide those moles by the smallest number among them:

Finally we multiply those numbers by 3, so as to convert the 2.68 of H into an integer:

Thus the empirical formula is C₃H₈O₃

Answer:

Converting Grams to Moles of an Element and Vice Versa.

We can convert back and forth between grams of an element and moles.

The conversion factor for this is the molar mass of the substance. The molar mass is the ratio giving the number of grams for each one mole of the substance

molar mass is the factor

Grams can be converted to moles and vice versa so the conversion factor which is used for this is molar mass.

Mass of any substance will be converted into moles by using the below equation:

n = W/M, where

n = moles

W = given mass

M = molar mass

By using the above formula we can convert the mass of any object to moles and moles to mass.

Hence conversion factor which is used for this is molar mass(M).

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Answer:Comparison of Ionic and Covalent Bonds

In an ionic bond, the atoms are bound together by the electrostatic forces in the attraction between ions of opposite charge. ... For example, sodium (Na), a metal, and chloride (Cl), a nonmetal, form an ionic bond to make NaCl. In a covalent bond, the atoms bond by sharing electrons.

pls   add  Brainliest

Answer:

C Group 11

Explanation:

Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), and gold (Au).

These elements show highest electrical conductivity.

Answer:

C Group 11

Explanation:

Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), and gold (Au).

These elements show highest electrical conductivity.

Explanation:

Answer:

See explanation

Explanation:

The nature of hydrogen bonding in 2- nitrophenol and 4- nitrophenol is quite different.

In 2- nitrophenol, there is intramolecular hydrogen bonding.  As a result of this, the compound has a low boiling point.

Then in 4- nitrophenol, there is intermolecular hydrogen bonding. This accounts for molecular association and higher boiling point in 4- nitrophenol.

Answer:

Silicon has 14 protons, 14 neutrons, and 14 electrons.

Explanation:

Answer:

1. Oceans -> Atmosphere = Evaporation

2. Atmosphere -> Clouds = Condensation

3. Cloud -> Snow = Freezing

4. Glacier -> River = Melting

5. Cloud -> Soil = Precipitation

Explanation

1. When liquid water is heated by the sun it evaporates into the atmosphere

2. When the saturated air cools down in the atmosphere, Water vapor condenses into tiny droplets to form a cloud

3. When the Temp is below freezing, water droplets crystalize into snow flakes.

4. Glaciers melt into the River

5. The cloud precips into soil

the other person got it really wrong.

A, B, C, D, and E would be evaporation, condensation, freezing, melting, and precipitation respectively

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Answer:

dose it give you numbers

Explanation:

Stomata is present on the lower epidermal layer that helps gases to move through. The tissue between the upper and lower epidermis of leaves, called the mesophyll, is perfectly designed to carry out intensive photosynthesis.

Since this evolutionary development is so crucial to plant identity, almost all terrestrial plants use the same pores, known as stomata, to absorb carbon dioxide and release oxygen.

Stomata are microscopic openings that are crucial for photosynthesis. They swarm and are plentiful on the plants' surface.

The reason for this high concentration is that they have a lot of chloroplasts, which are the locations for photosynthesis.

Chloroplasts provide oxygen and create energy through photosynthesis to assist plant growth and crop output.

Thus, the mesophyll cells of the leaf contain many of chloroplasts. The tissue between the upper and lower epidermis of leaves, called the mesophyll, is perfectly designed to carry out intensive photosynthesis.

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Answer: The Correct Answer is Choice B.

Explanation: I just took the quiz.

ANSWER:

B. Electrons have transferred from one atom to another.

EXPLANATION:

An oxidation-reduction (redox) reaction is a reaction which involves the change in oxidation number of the atoms involved. Since the oxidation number changes, this means that one atom has to lose electrons and another has to accept electrons. The reactant that loses electrons is called REDUCING AGENT while the reactant that gains electrons is called OXIDIZING AGENT.

For example, in a reaction between iron and oxygen as follows:

4Fe+ 3O2→2Fe2O3

Iron is reduced from +2 to 0 because it accepts electrons from oxygen while oxygen is oxidized from -2 to 0 because it transfers electrons to iron.

Hence, a redox reaction can be identified by the transfer of electrons from one atom to another.

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Answer:

One of the major effects of heat transfer is temperature change: heating increases the temperature while cooling decreases it. We assume that there is no phase change and that no work is done on or by the system. Experiments show that the transferred heat depends on three factors—the change in temperature, the mass of the system, and the substance and phase of the substance.

Answer:

group 15 ( the nitogen group)

Explanation:

Answer:

Explanation:

A nuclear repository would be required to be isolated with barriers in place to keep people out. Ideally, it should be stored underground and away from any underlying waterways, or biosystems so as to avoid contamination. A good example would be the proposed Yucca Mountain repository.

I hope this was helpful and useful.

The radioactive substance has a lot of distinction and variation and needs to be kept aside from the environment and it of reach for most nuclear power plants to discharge the gases.

Learn more about the characteristics that would be taken into consideration.

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Answer:

Because its source is the almost unlimited amount of heat generated by the Earth's core. Even in geothermal areas dependent on a reservoir of hot water, the volume taken out can be reinjected, making it a sustainable energy source.

Explanation:

Geothermal energy is underutilized and underutilized in comparison to other renewable energy sources such as solar and wind energy. This is due to the difficulty of extracting energy from the subsoil, as complications can arise that affect both the environment and the cost of energy.

Geothermal energy is the thermal energy in the Earth's crust that results from the planet's formation and radioactive decay of materials in currently unknown but potentially roughly equal proportions.

Geothermal energy is not always a renewable energy source because the extraction of heat from the earth's crust over time can cause depletion, causing some geothermal wells to cool and run out of water.

Geothermal energy can be found at depths accessible by drilling in these areas. It is simply too deep to reach in other parts of the world. The second reason is that it has high capital expenses. The costs of drilling and power plants are somewhat high.

Thus, Geothermal energy is underutilized and underutilized in comparison to other renewable energy sources such as solar and wind energy.

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Answer:

In order from fastest to slowest, Steam > Liquid Water > Ice

Explanation:

As temperatures rise, particles are allowed to move faster and more freely. If you think about the phases of matter, the more compact something is (solids), the less the particles are able to move. Taking the temperate of ice into consideration, the cold further restricts fast movement of particles, whereas gas (especially steam in this case), in hot temperatures, is able to move quickly and freely in the atmosphere.

Answer:

529g/L

Explanation:

The concentration in chemistry is defined as the amount of solute in a determined amount of solution. The concentration in g/L means the amount of grams of solute (In this case, barium acetate), per liter of solution.

To solve this problem we need to find grams of solute (52.9g, already given) and the volume in liters (Converting 100mL to liters):

Volume:

100mL * (1L / 1000mL) = 0.100L

And concentration in g/L is:

52.9g / 0.100L =

Answer:

hope it helps you

Explanation:

i think is d

Answer:

B

Explanation:

Answer:

c

Explanation:

The ocean water transfers thermal energy to the area, warming the equatorial waters. Therefore, the correct option is option C.

In physics and engineering, the phrase "thermal energy" is thrown around in a lot of different situations. It can relate to a variety of distinct physical notions. They include radiation and a body of matter's inherent energy, also known as enthalpy.

Through means besides just thermodynamic work or the movement of matter, including such conduction, radiation, or friction, heat is energy that is moved into or out of a thermodynamic system. Heat is not a property of any single system or something that is "contained" within it; rather, it is a quantity that is transmitted across systems. Internal energy and enthalpy, on the other hand, are characteristics of a single system. The ocean water  transfers thermal energy to the area, warming the equatorial waters.

Therefore, the correct option is option C.

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Answer:

co is colbalt  

Explanation:

Cobalt

Cobalt is a chemical element with symbol Co and atomic number 27.

Why can gases and liquids be paired but not solids?

The atoms and molecules in gases are much more spread out than in solids or liquids. They vibrate and move freely at high speeds. A gas will fill any container, but if the container is not sealed, the gas will escape. Gas can be compressed much more easily than a liquid or solid.

Answer:

A weak acid

Explanation:

Im not sure if its right. But lets see someone else do it.

Answer:

B. A strong acid.

An electrolyte with a pH less than 4 is a strong acid, that with pH range of 4 - 7 is a weak acid, that with 7 - 10 is a weak base, that with pH range of 10 - 14 is a strong base.

Answer:

B. -5.58°C.

Explanation:

Hello!

In this case, since the freezing point depression is computed as follows:

[tex]\Delta T_f=-i*m*Kf[/tex]

Whereas i=1 as the van't Hoff's factor of sugar (nonionizing solute), m=3mol/1kg=3mol/kg as the molality and Kf=1.86 °C/(mol/kg) as the freezing point depression constant for water. In such a way, we plug in to obtain:

[tex]\Delta T_f=-1*3\frac{mol}{kg} *1.86\frac{\°C}{mol/kg} \\\\\Delta T_f=-5.58\°C[/tex]

Now, since the freezing point of pure water is 0°C, we infer that freezing point of such solution is:

B. -5.58°C.

Best regards!

Answer:

i think its 10 miles per hour

Answer:

In graph theory, a component of an undirected graph is an induced subgraph in which any two vertices are connected to each other by paths, and which is connected to no additional vertices in the rest of the graph.

Answer:

Phosphoric acid

Explanation:

Answer:

Phosphoric acid

Explanation:

Phosphoric acid is an oxyacid, which is formed when hydrogen combines with the polyatomic ion phosphate. The polyatomic ion for phosphate is [tex]PO_4^-3[/tex]. To combine this with hydrogen, we "criss-cross" the charges of phosphate (which has a charge of -3) and hydrogen (which has a charge of +1) to get [tex]H_3(PO_4)_1[/tex], the same as [tex]H_3PO_4[/tex].

To answer this question, we essentially reverse these steps. First, we would recognize that this is a hydrogen atom bonded with phosphate. Because phosphate is a polyatomic ion, we know that this is an oxyacid. Because it involves phosphate, we call it phosphoric acid.

I hope this helps!

Answer:

its 2

Explanation:

Answer:

create a plan

the ways of of a student to set a goal

1. Write clear and measurable goals

2.Create a specific plan for each goal

3.Read your goals daily and visualize yourself accomplishing them

4. Reflect yourself to see if you are on target

5. Revise your action plans if needed.

1.)make a plan

2.)make a schedule

5.)pace him or herself