help me pleaseeeeee​

Help Me Pleaseeeeee

Answers

Answer 1

Answer:

Arthropod (3)

Annelids (2)

Cnidarians (1)

Echinoderms (4)

Explanations:

I hope all this helps if u don't understand it let me know.


Related Questions

what change in the system will increase the boiling point

Answers

Answer:

ExplanationIt is moving from 4s to 8s at a constant speed of 4 cm:

Answer:

Boiling points increase as the number of carbons is increased.

Explanation:

The addition of solutes or other substances usually changes the boiling point. Additionally, changing the pressure on a liquid changes its boiling point. Sugar, salt or other non-volatile solutes in water will usually make the boiling point higher.

The relative strength of the four intermolecular forces is: Ionic > Hydrogen bonding > dipole dipole > Van der Waals dispersion forces. The influence of each of these attractive forces will depend on the functional groups present. Boiling points increase as the number of carbons is increased.

Why does oxygen have a smaller atom size than nitrogen?

Answers

Answer:

The eight protons in oxygen atom's nucleus will exert more force than nitrogen's seven electrons. Also, oxygen has same number of shells as nitrogen. Thus electrons in oxygen atom will be closer to nucleus than in the case of nitrogen. When electrons are closer it means atomic radius is smaller.

Hope this helps! :)

here's the answers.................

PLEASE HELP MY TEACHER IS GOING TO SEE ME AFTER CLASS

Answers

Answer:

The Nucelous helps prevent bad cells in

Explanation:

Which reason best explains why metals are malleable?

A. because they have delocalized electrons

B. because they have localized electrons

C. because they have ionic bonds

D. because they have rigid bonds


The correct answer is A on edg 2020

Answers

I’m pretty sure a sorry if I’m wrong

Help me Guys please I need help with this My step sister is here and she's a demon and annoying Can I have good ideas what to do

Answers

Answer:

Lock her in the bathroom

Explanation:

Answer:

Ayoo

Explanation:

why specific gravity test is done ?​

Answers

Answer: Urinary specific gravity (SG) is a measure of the concentration of solutes in the urine. It measures the ratio of urine density compared with water density and provides information on the kidney's ability to concentrate urine. A urinary specific gravity measurement is a routine part of urinalysis. A urine specific gravity test compares the density of urine to the density of water. This quick test can help determine how well your kidneys are diluting your urine. Urine that's too concentrated could mean that your kidneys aren't functioning properly or that you aren't drinking enough water.

Hope this helps..... Stay safe and have a Merry Christmas!!!!!!!!!! :D

Explanation:

How many total atoms are present in C6H12O6?

Answers

Answer:24 atoms

Explanation:

Answer: 24 atoms

Answer and Explanation:

There are 24 atoms in one molecule of C6 H12 06. This chemical compound has 6 atoms of carbon, 12 atoms of hydrogen, and 6 atoms of oxygen.

Hope this helps.... Stay safe and have a Merry Christmas!!!!!!! :D

How many elements are in NaC2H302?

Answers

There are four different elements

can copper be scratched by a fingernail or blade knife. why?

Answers

Answer:

it could by blade knife

Explanation:

fingernail has hardness 2.5; copper penny, about 3.5; a knife blade, 5.5

Which of these elements does not bond with other elements to form molecules?

Group of answer choices

Neon

Sulfur

Oxygen

Chlorine

Answers

Answer:

Explanation:b

How many moles of gas at 58° C does it take to fill a 1.75 L flask to a pressure of 12.5 kPa? Please help I will give brainliest

Answers

Answer:

0.008 moles of gas are present

Explanation:

Given data:

Volume of gas = 1.75 L

Number of moles =  ?

Temperature of gas = 58°C

Pressure of gas = 12.5 KPa

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

58+273 = 331 K

Pressure = 12.5/101 = 0.12 atm

by putting values in formula:

0.12 atm× 1.75 L = n× 0.0821 atm.L/ mol.K   ×331 K

0.21 atm.L = n× 27.17atm.L/ mol

n = 0.21 atm.L /27.17atm.L/ mol

n = 0.008 mol

science vocab (image attached)

Answers

Answer:

Solution-a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).

solvent- able to dissolve other substances.

solute- the minor component in a solution, dissolved in the solvent.

colloid- a homogeneous noncrystalline substance consisting of large molecules or ultramicroscopic particles of one substance dispersed through a second substance. Colloids include gels, sols, and emulsions; the particles do not settle, and cannot be separated out by ordinary filtering or centrifuging like those in a suspension.

suspension- is a heterogeneous mixture that contains solid particles sufficiently large for sedimentation.

Explanation:

The tungsten- nuclide radioactively decays by alpha emission. Write a balanced nuclear chemical equation that describes this process.

Answers

Answer:

The solution to this question can be defined as follows:

Explanation:

The complete question is defined in the attached file.

[tex]W^{180}_{74} \to He^{4}_{2} + Hf^{176}_{72}[/tex]

Here:

[tex]W= Tungsten-180\\\\Hf =Hafnium\\\\He = \alpha \ particle\\\\[/tex]

Compare and contrast the mass of the object to the size of the object.

Answers

Mass is the amount of matter an object contains, while volume is how much space it takes up. Take a basketball and a bowling ball, their about the same size but the bowling ball is heavier because it contains more matter.

What is the density of a piece of wood that has a mass of 25.0 grams and a volume of 5.0 cm 3 ?

Answers

Answer:

5.0g/cm^3

Explanation:

Since we have the mass of the wood (25.0g) and the volume of the wood (5.0cm^3), can use the formula for density to answer this question.

Density=mass/density

Density=25.0g/5.0cm^3

Density=5.0g/cm^3

Therefore, the density of the piece of wood is 5.0g/cm^3.

I hope this helps!

is francium found in nature or lab?

Answers

Answer:

It was the last element first discovered in nature, rather than by synthesis. Outside the laboratory, francium is extremely rare, with trace amounts found in uranium and thorium ores, where the isotope francium-223 continually forms and decays

In an experiment, two unknown compounds (one an ether and the other an amine) of equal molecular mass were dissolved in water. The result of the experiment is shown in the table.


Solubility Comparison
Unknown Compound Solubility (g/100 ml water)
A 4
B 0.25


Which of the following correctly explains the identity of Compound A and its solubility?
It is an amine; it contains a nitrogen atom that will allow nitrogen-hydrogen bonds to form while in water.
It is an ether; because the oxygen atom is within the carbon chain, so it is free to form oxy-hydrogen bonds to make it more soluble.
It is an ether; the high polarity of the oxygen-hydrogen bond makes it more soluble.
It is an amine; because the lower electronegativity of N than H makes it more soluble.

Answers

Answer:

It is an amine; it contains a nitrogen atom that will allow nitrogen-hydrogen bonds to form while in water.

Explanation:

The solubility of amines owes largely to the electronegativity difference between nitrogen and hydrogen. Remember that when hydrogen is bonded to highly electronegative element such as nitrogen, intermolecular hydrogen bonding is possible with water molecules. This explains the greater solubility of amines in water.

Ether molecules do have an oxygen atom, however, and engage in hydrogen bonding with water molecules to a lesser extent compared to amines.

Also, amines participate in some acid-base reactions that lead to the formation of diethylammonium hydroxide, an ion which leads to a greater solubility of amines compared to an ether.

Hence, compound A is an amine.

What is the molecular structure of H2O?

Answers

Answer:

A water molecule consists of two hydrogen atoms and one oxygen atom. The three atoms make an angle; the H-O-H angle is approximately 104.5 degrees. The center of each hydrogen atom is approximately 0.0957 nm from the center of the oxygen atom.

Explanation:

2 hydrogen molecules and 1 oxygen molecule

Help pleaseeeeeeeee with this question

Answers

Maybe glass not too sure

Answer:

(C) Vacuum

Explanation:

need help with this.............................................

Answers

Answer:

fossil layers

Explanation:

Which of the three goals of Persuasive Speaking is the hardest to achieve?
a.
weaken attitudes, beliefs or values
b.
strengthen attitudes, beliefs or values
c.
change attitudes, beliefs, or values
d.
motivate to action

Answers

Answer:

C

Explanation:

edge2021!!

Answer:  The correct answer is c. change attitudes, beliefs or values.

Explanation:

Of these goals, the hardest to achieve is changing attitudes, beliefs, and values. It is difficult to convince an audience to truly change their attitudes, beliefs, or values based on your presentation since it typically requires establishing trust and respect on a personal level.

In carbon dioxide (CO2), there are two oxygen atoms for each carbon atom. Each oxygen atom forms a double bond with carbon, so the molecule is formed by two double bonds.

Two double bonds means that the total number of electrons being shared in the molecule is

two.
four.
six.
eight.

Answers

Answer: D) Eight

Just pretend this part doesn't exist nope nothing to see here the answer is correct on edge2020 I swear on my brainly points

Answer:

d

Explanation:

If the specific heat of water is 4.18 3/g*^ C much heat is required to increase the temperature of 12 g of water from 23 degrees * C to 39 degrees * C ^ 2

Answers

Answer:

Q = 802.6 J

Explanation:

Given data:

Specific heat capacity of water = 4.18 J/g.°C

Mass of water = 12 g

Initial temperature = 23°C

Final temperature = 39°C

Heat required = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 39°C - 23°C

ΔT = 16 °C

Q = 12 g× 4.18 J/g.°C × 16 °C

Q = 802.6 J

Atom and Periodic table vocabulary:
1. The mass on the periodic table.
2. Particles that differ in number between isotopes.
3. Vertical column in the periodic table.
4. Atoms of the same element that have different masses.
5. All elements in the same one of these has the same number of energy levels in their electron cloud.
6. The smallest form of matter that still retains the properties of an element.

key:
Neutrons
Quark
Average atomic mass
Isotopes
Group
Period

Answers

Answer:

1. The mass on the periodic table.

Average atomic mass

2. Particles that differ in number between isotopes.

Neutrons

3. Vertical column in the periodic table.

Group

4. Atoms of the same element that have different masses.

Isotopes

5. All elements in the same one of these has the same number of energy levels in their electron cloud.

Period

6. The smallest form of matter that still retains the properties of an element.

Quark

Explanation:

1. What factors can change the attractive force between the nucleus of an atom and
its valence electrons?

Answers

Answer:

Ionization Energy

Explanation:

Factors such as nuclear charge and distance of electrons to the nucleus

affect the attractive force between the nucleus of an atom and its valence

electrons.

The closer the electron to the nucleus the higher the attractive force.

Nucleus possesses an attractive force for stability which is stronger in

electrons in close proximity with it.

We should also note that the higher the nuclear charge, the stronger the

attractive force and vice versa.

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who want to play among us​

Answers

Answer:

Meh i want to play

UwU

:)

Answer: yeah sure lad

Explanation:

Use Figure 5-5 to determine the types of radiation described in problem 5​

Answers

Answer:6.12 x 10¹⁴ s⁻¹

Objects get their colors from reflecting only certain wavelengths when hit with white light. Light reflected from a green leaf is found to have a wavelength of 4.90 x 10⁻⁷ m. What is the frequency of the light?

Explanation:

Answer: 6.12 x 10¹⁴ s⁻¹

Explanation:

Which of the following best describes foliated metamorphic rocks?

A
There are easily recognizable fossils.

B
The rock has ribbon-like layers of bands.

C
They have crystals like igneous rocks.

D
Different sized sediments can be seen.

Answers

Answer:

It's C because Metamorphic rocks were once igneous rocks. And, because Gneiss which is a Metamorphic rock has crystals inside of it.

Different rock types appear during rock formation. The best description of foliated metamorphic rocks is that;

B . The rock has ribbon-like layers of bands.

Due to the pressure and heat that is exerted on some rock types, there is an alignment or foliation of rocks. The appearance can be described as ribbon-like.

The examples of rocks that fall under this classification are slate, phyllite, gneiss, and schist.

The non-foliated rocks do not show any alignment in their minerals. Examples are; quartzite, marble, and novaculite.

Summarily, option B best describes a foliated metamorphic rock.

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balance the following chemical equation
Na+I2->NaI

Answers

Balanced equation : 2Na+I₂⇒2NaI

Further explanation

Equalization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:

• 1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc.

• 2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product

• 3. Select the coefficient of the substance with the most complex chemical formula equal to 1

Reaction

Na+I₂⇒NaI

Give coefficient :

aNa+bI₂⇒NaI

Make an equation :

Na, left=a, right=1⇒a=1

I, left=2b, right=1⇒2b=1⇒b=0.5

Equation becomes :

Na+0.5I₂⇒NaI x 2

2Na+I₂⇒2NaI

What is the total number of moles of oxygen atoms present in one mole of Mg(CIO3)2?
1. 5
2. 2
3. 3
4. 6

Answers

4) 6!!!!!!!!!!!!!!
Nanananabxnjajakaz

Answer:

Of oxygen would be 6 moles (4).

Explanation:

Since it is in a bracket you have to multiply 3 and tge 2 to get 6 oxygens.

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