hi. i need help with this. i lack with this subject

Hi. I Need Help With This. I Lack With This Subject

Answers

Answer 1

Answer: It's the circulatory system

Explanation:


Related Questions

Select the answer that completes each statement.

The
founded the Virginia colony.

The
government took over the Virginia colony because too many colonists had died.


and
worked on the tobacco plantations.

The
was the first elective governing body in a British colony.

Answers

Answer:

1 colonists

2 England

3 slaves

4 the House of Burgesses

Answer:

:)

Explanation:

lol can some have helo me out its easy
1, 2 and 3

Answers

Answer:

1. A

2. C

3. C

Explanation:

1. there are single cell organisms

2. all others are abiotic factors

3. individual is just one, population is one species, community is all populations, ecosystem includes abiotic and biotic factors, biome is a large geographical area.

on an energy diagram, where is a stable equilibrium point?

Answers

Answer:

1.2

Explanation:

Earth science
Help plz!
Which piece of information could a person obtain from a contour map?
1.the mineral composition of a mountain
2. the elevation of a mountain 3.the speed of water flow in a river
4.the amount of water in a river

Answers

Answer:

2 Elevation of a mountain.

Explanation:

Contours make it possible to show the height and shape of mountains, the depths of the ocean bottom, and the steepness of slopes.

(Brainiest and Thanks all Appreciated)

when the orbitals or energy levels of an atom are full, it is considered to be stable. which atom in the ground state has a stable electron configuration?

Answers

Answer:

Noble gases, atoms which have complete filled outer orbits.

Explanation:

SInce, you have given no options elements like Neon, Helium,etc

Noble elements are the atoms which have stable electronic configuration in the ground state.

What is electronic configuration?

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state  and hence are said to be stable.

Learn more about electronic configuration,here:

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Someone pls help me I will make you brain

Answers

Answer:

A

Explanation:

what type of carbohydrates provide the body with a sustained release of energy?

Answers

Answer:

Fiber-rich, complex carbs

Complex carbs with fiber take much longer to digest than simple carbs. This helps to maintain stable blood sugar levels because sugar enters the bloodstream gradually . Complex carbohydrates provide sustained energy and help you feel fuller for longer because they are digested more slowly.

Which form of carbohydrates can your body use for energy?Glucose, also known as blood sugar, is the primary energy source for your body's cells, tissues, and organs. Glucose can be used right away or stored for later use in the liver and muscles.Carbohydrates are the body's preferred fuel source because they can be quickly converted to glucose. A light carbohydrate snack right before exercise is a good idea for quick energy. Eat protein with carbs to slow the rate at which your body absorbs them for longer-lasting energy.Fat is the most concentrated source of energy in the body, providing more than twice the potential energy of carbohydrate or protein (9 calories per gram versus 4 calories each per gram).

To learn more about :  Glucose

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why is it necessary to run tlc in a closed container?

Answers

Answer:

Explanation:

It is necessary to run TLC in a closed container and have the interior saturated with the solvent vapor to ensure maximum resolution between components and to prevent solvent evaporating off. If the solvent evaporates off, the Rf value would be lower than the expected value.

A molecule is made up of more than one element ?

Answers

Answer:

Yes it is

Explanation:

How else do you think nitrogen or oxygen is made?

which part of the chemical structure differentiates one amino acid from another?

Answers

Answer:

Every amino acid also has another atom or group of atoms bonded to the central atom known as the R group. This R group, or side chain, gives each amino acid proteins specific characteristics, including size, polarity, and pH.

pls help ——————————
—————-

Answers

Answer:

X has 9 Electrons, 9 Protons and 10 Neutrons

X is Fluorine

Explanation:

19 in X is Nucleon number

So, if you minus 19 by 9 down there (which is proton number) you'll get 10 (Neutron number).

Now, Proton = Electron. That's why Electron is 9 too. I figured that X is Fluorine bcuz it has 9 Electrons. If you venture around in the periodic table, fluorine is the ninth element innit.

hope this helps ya \(^o^)/

a 200 g of sugar was dissolved in 100 ml of water describe the solution

A.diluted
B.concentrated
C. sweet
D. very sweet

................... answer.........pls........

Answers

Answer:

b

Explanation:

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Between Si, P, Ge, and Se which element has the largest covalent radius?

Answers

Ge would have the largest radius as it is the lowest and right most element on the periodic table.

In descending order: Ge, Si, Se, P

Land can also be called:
A) Money and/or profit
B) Natural Resources
C) Human Resources

Answers

I’m pretty sure the answer would not be C) Human Resources.

When you rub an inflated balloonon your head on a dry day,it can make your hair stand up! what force is that?

Answers

When you rub an inflated balloon on your head and it makes your hair stand up, the force that makes the hair stand up is known as static electricity.

When the balloon is rubbed on the head, electrons from the hair atoms move into the balloon, thus making the balloon to be negatively charged and the hair positively charged due to loss of electrons.

Unlike charges attracts. Thus, when you try to pull the balloon away slowly, the positively charged hair and the negatively charged balloon will attract each other and this is usually what makes the hair stand up.

More on static electricity can be found here: https://brainly.com/question/24160155

Answer:

static electricity

Explanation:

this is because there is an imbalance between negative and positive charges

when you keep on rubbing, a negative charge is created which is carried by electrons.

when you pull the balloon away slowly, the opposite charges attract to each other which makes your hair attract to the balloon

The mass number is equal to the number of blank in the nucleus of the atom

Answers

Answer:

c

Explanation:

calculate mass in grams of 5.09×10^20 atoms of copper. (Atomic Mass 63.5)

Answers

Explanation:

here is the answer attached

1. Cooking pots are provided with wooden or plastic handles .Why?

Answers

Answer:

So the heat doesn't transfer to the handle and heat it up causing you to burn yourself in cooking process

Explanation:

Hope this helps! Happy Halloween

Cooking pots are provided with wooden or plastic handles because wood or plastic handles are bad conductors of heat. Hence, the heat from the hot appliances does not flow to our hands with the result that we can handle them without any difficulty.

AJUTOR VA ROG AM TEST SI MAI AM 10 MINUTE AM NEVOIE DE SUBPUNCTUL C SI D

Answers

Explanation:

desk I have a lot of work and I will send it in the one

Which of the following are directly proportional? *
volume and temperature
pressure and volume
pressure and temperature

Answers

Volume and temperature.

how many molecules of water, h2o, are present in 75.0 g of h2o?

Answers

Answer:

150 molecules of oxygen

Explanation:

In which range of electronegativity differences would polar covalent bonds occur?(1 point)
−1.0 to 0
0 to 1.0
0 to 0.5
0.5 to 1

This image shows electronegativities of elements on the periodic table. Based on this information, which element is most likely to form a strong ionic bond and take on electrons? (1 point)
fluorine (F)
cesium (Cs)
hydrogen (H)
helium (He)

Which option contains an example of a polyatomic ion?(1 point)
NH4
KNO3
CaCl2
MgCl

Which statement best explains the difference between polar and nonpolar covalent bonds?(1 point)
Polar covalent bonds give/take electrons, while nonpolar covalent bonds share electrons.
Polar covalent bonds share electrons, while nonpolar covalent bonds give/take electrons.
Polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally.
Polar covalent bonds share electrons equally, while nonpolar covalent bonds share electrons unequally

Which statement describes the bonds in iron sulfate, FeSO4? (1 point)
Fe and S have an ionic bond, and S and O have ionic bonds, too.
Fe and S have a covalent bond, while S and O have ionic bonds.
Fe and S have an ionic bond, while S and O have covalent bonds..
Fe and S have a covalent bond, and S and O have covalent bonds, too.

Answers

Answer: 1. (0.5 to 1)

              2. (Fluorine)

              3. (KNO3

              4. (Polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally.)

              5. (Fe and S have a covalent bond, and S and O have covalent bonds, too.)

Explanation:

Ye, have great day.

The periodic table is an arrangement of elements according to their periodic properties.

Polar covalent bonds are those compounds in which unsymmetrical electron distribution in bonds leads to polarity in the molecule. Examples of such compounds include; HCl, CHCl3, etc. A polar covalent bond occurs when the electronegativity differences between atoms lies within the range of 0.5 to 1.

Since electronegativity increases across the period and we also know that highly electropositive metals(having very low electronegativity) and highly electronegative nonmetals(having high electronegativity)  form a strong ionic bond, it follows that fluorine (F) and cesium (Cs) will form a strong ionic bond.

A poly atomic ion is an ion that contains more than one atom. Given the options listed NH4^+ is an example of a polyatomic ion.

The difference between polar and nonpolar covalent bonds is that polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally.

In FeSO4, Fe and S have an ionic bond, while S and O have covalent bonds.

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NO LINKS PLS HELP I WILL MARK THE BRAINIEST ANSWER

Answers

Answer:

Option a

Explanation:

simple

Answer:

The two solutions do not react with each other unless the water is boiled off, then the two will decompose.

Explanation:

Someone pls help me I will make you brain

Answers

Answer:

Carbon Monoxide- D)

Nitrogen Oxides- A)

Particulate matter- C)

Sulfur Oxides- B)

Explanation:

Answer is 100% verified

Count on me, I'm a Chemistry Guru

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Answers

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hello
Describe the structure of solid potassium iodide.

Answers

Answer:

Potassium iodide is a metal-halide salt that has an ionic connection between the potassium cation (K+) and the iodide anion (I–). It is colorless to white and appears as cubical crystals, powder, or white granules. It has a salty, astringent flavor. This chemical is made from iodine and potassium hydroxide.

a thermometer used to measure the temperature of food must be accurate to what temperature?

Answers

Answer:Accuracy Thermometers used to measure the temperature of food need to be accurate to +/-2°F or +/-1°C. Thermometers used to measure air temperature in food storage equipment need to be accurate to +/-3°F or +/- 1.5°C. A hanging thermometer in a walk-in cooler is an example.

Explanation:

Words are on the right please help!

Answers

Answer:

1.Frequency

2.Amplitude

3.Wavelength

4.Medium

5.Back and Forth

6.Up and Down

Explanation:

CORRECT ME IF I'm wrong

yes it’s right!!!!!!!!!

Which of the following describes a chemical property of oxygen?
Oxygen is a gas at room temperature.
An oxygen molecule has an atomic mass of 32 a m u.

The density of oxygen is 0.00133 grams per centimeter cubed .

Oxygen reacts with iron to form rust.

Answers

Answer:

Oxygen Reacts with Iron to Form Rust is the Correct Answer

The formula of alkanes contain 3 5 7 and 9 carbon atoms

Answers

Explanation:

In organic chemistry, an alkane, or paraffin (a historical trivial name that also has other meanings), is an acyclic saturated hydrocarbon. In other words, an alkane consists of hydrogen and carbon atoms arranged in a tree structure in which all the carbon–carbon bonds are single.

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